INFO: task hung in addrconf_verify_work (2)
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syzbot
Oct 28, 2020, 1:47:24 AM10/28/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 5b7a52cd Linux 4.14.202
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1032b470500000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa386e02ca459165
dashboard link: https://syzkaller.appspot.com/bug?extid=6e8e3a1c58678143171e
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1319e004500000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e2cbc4500000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6e8e3a...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
INFO: task kworker/0:0:3 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:0 D30064 3 2 0x80000000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4412
process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
INFO: task syz-executor135:8033 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D26808 8033 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd8ac50 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd8ad10 RCX: 0000000000406767
RDX: 0000000000000038 RSI: 00007fe80bd8ad60 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007fe80bd8ac60 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe80bd8ad60 R15: 0000000000000006
INFO: task syz-executor135:8071 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8071 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd69c80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd69d20 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bd69d70 RDI: 000000000000000a
RBP: 0000000000000000 R08: 00007fe80bd69c90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bd69cf4
R13: 0000000000000010 R14: 00007fe80bd69d70 R15: 000000000000000a
INFO: task syz-executor135:8072 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8072 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd48c80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd48d20 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bd48d70 RDI: 0000000000000007
RBP: 0000000000000000 R08: 00007fe80bd48c90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bd48cf4
R13: 0000000000000010 R14: 00007fe80bd48d70 R15: 0000000000000007
INFO: task syz-executor135:8075 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29472 8075 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x447ba9
RSP: 002b:00007fe80bd28d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dccb8 RCX: 0000000000447ba9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000009
RBP: 00000000006dccb0 R08: 000000000000000d R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dccbc
R13: 0000000000000000 R14: 000000306e616c77 R15: ffffffff00000000
INFO: task syz-executor135:8076 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29472 8076 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x447ba9
RSP: 002b:00007fe80bd07d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dccc8 RCX: 0000000000447ba9
RDX: 0000000000044000 RSI: 0000000020000340 RDI: 0000000000000008
RBP: 00000000006dccc0 R08: 00007fe80bd08700 R09: 0000000000000000
R10: 00007fe80bd08700 R11: 0000000000000246 R12: 00000000006dcccc
R13: 0000000000000000 R14: 000000306e616c77 R15: ffffffff00000000
INFO: task syz-executor135:8077 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8077 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bce5c20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bce5d10 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bce5d60 RDI: 000000000000000d
RBP: 0000000000000000 R08: 00007fe80bce5c30 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bce5c94
R13: 0000000000000010 R14: 00007fe80bce5d60 R15: 000000000000000d
INFO: task syz-executor135:8078 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D30096 8078 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bcc4c80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bcc4d20 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bcc4d70 RDI: 000000000000000c
RBP: 0000000000000000 R08: 00007fe80bcc4c90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bcc4cf4
R13: 0000000000000010 R14: 00007fe80bcc4d70 R15: 000000000000000c
INFO: task syz-executor135:8087 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D28960 8087 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x447ba9
RSP: 002b:00007fe80bca4d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dccf8 RCX: 0000000000447ba9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 000000000000000b
RBP: 00000000006dccf0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dccfc
R13: 0000000000000000 R14: 000000306e616c77 R15: ffffffff00000000
INFO: task syz-executor135:8064 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8064 8030 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd69c20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd69d10 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bd69d60 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007fe80bd69c30 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bd69c94
R13: 0000000000000010 R14: 00007fe80bd69d60 R15: 0000000000000006
Showing all locks held in the system:
3 locks held by kworker/0:0/3:
#0: ("%s"("ipv6_addrconf")){+.+.}, at: [<ffffffff813733a0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087
#1: ((addr_chk_work).work){+.+.}, at: [<ffffffff813733d6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091
#2: (rtnl_mutex){+.+.}, at: [<ffffffff8651dfba>] addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4412
1 lock held by khungtaskd/1531:
#0: (tasklist_lock){.+.+}, at: [<ffffffff81430a04>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by syz-executor135/8033:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8071:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8072:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8075:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8076:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8077:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8078:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8087:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8064:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8081:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8082:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8090:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8093:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8098:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8099:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8105:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8043:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8063:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8085:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8086:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8092:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8094:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8100:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8101:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8040:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8054:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8060:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8066:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8069:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8070:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8074:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8044:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8062:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8079:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8080:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8088:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8089:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8096:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8097:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8042:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8065:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8083:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8084:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8091:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8095:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8102:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8103:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8107:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
3 locks held by kworker/0:1/8053:
#0: ("events"){+.+.}, at: [<ffffffff813733a0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087
#1: ((linkwatch_work).work){+.+.}, at: [<ffffffff813733d6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091
#2: (rtnl_mutex){+.+.}, at: [<ffffffff85e3714a>] linkwatch_event+0xa/0x50 net/core/link_watch.c:236
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4617 Comm: systemd-journal Not tainted 4.14.202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a1638680 task.stack: ffff8880a1640000
RIP: 0010:__lock_release kernel/locking/lockdep.c:3794 [inline]
RIP: 0010:lock_release+0x2e8/0x870 kernel/locking/lockdep.c:4017
RSP: 0018:ffff8880a1647d70 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff110142c8fb1 RCX: 0000000000000000
RDX: ffff8880a1638f08 RSI: ffffffff88fd6f40 RDI: ffff8880a1638f2a
RBP: ffffffff88fd6f40 R08: ffffffff8b98f0c8 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a1638680 R12: ffffffff816c1530
R13: ffffffff8beb3d40 R14: ffff8880a1638680 R15: 0000000000000001
FS: 00007fc1509bd8c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc14ddca000 CR3: 00000000a18af000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_pre_alloc_hook mm/slab.h:417 [inline]
slab_alloc mm/slab.c:3376 [inline]
kmem_cache_alloc+0x29/0x3c0 mm/slab.c:3550
prepare_creds+0x39/0x490 kernel/cred.c:255
SYSC_faccessat fs/open.c:365 [inline]
SyS_faccessat+0x7b/0x680 fs/open.c:353
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fc14fc799c7
RSP: 002b:00007fff53633448 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007fff53636470 RCX: 00007fc14fc799c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055fe064b39a3
RBP: 00007fff53633590 R08: 000055fe064a93e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 000055fe07d388a0 R15: 00007fff53633a80
Code: fc ff df 48 89 f9 48 c1 e9 03 0f b6 04 01 84 c0 74 08 3c 03 0f 8e 66 03 00 00 66 83 6a 22 10 66 f7 42 22 f0 ff 0f 85 bf 00 00 00 <48> b8 00 00 00 00 00 fc ff df 48 8b 4c 24 08 8b 6c 24 38 48 c1
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
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syzbot can test patches for this issue, for details see:
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syzbot found the following issue on:
HEAD commit: 5b7a52cd Linux 4.14.202
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1032b470500000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa386e02ca459165
dashboard link: https://syzkaller.appspot.com/bug?extid=6e8e3a1c58678143171e
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1319e004500000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e2cbc4500000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6e8e3a...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
INFO: task kworker/0:0:3 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:0 D30064 3 2 0x80000000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4412
process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
INFO: task syz-executor135:8033 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D26808 8033 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd8ac50 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd8ad10 RCX: 0000000000406767
RDX: 0000000000000038 RSI: 00007fe80bd8ad60 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007fe80bd8ac60 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe80bd8ad60 R15: 0000000000000006
INFO: task syz-executor135:8071 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8071 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd69c80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd69d20 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bd69d70 RDI: 000000000000000a
RBP: 0000000000000000 R08: 00007fe80bd69c90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bd69cf4
R13: 0000000000000010 R14: 00007fe80bd69d70 R15: 000000000000000a
INFO: task syz-executor135:8072 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8072 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd48c80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd48d20 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bd48d70 RDI: 0000000000000007
RBP: 0000000000000000 R08: 00007fe80bd48c90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bd48cf4
R13: 0000000000000010 R14: 00007fe80bd48d70 R15: 0000000000000007
INFO: task syz-executor135:8075 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29472 8075 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x447ba9
RSP: 002b:00007fe80bd28d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dccb8 RCX: 0000000000447ba9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000009
RBP: 00000000006dccb0 R08: 000000000000000d R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dccbc
R13: 0000000000000000 R14: 000000306e616c77 R15: ffffffff00000000
INFO: task syz-executor135:8076 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29472 8076 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x447ba9
RSP: 002b:00007fe80bd07d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dccc8 RCX: 0000000000447ba9
RDX: 0000000000044000 RSI: 0000000020000340 RDI: 0000000000000008
RBP: 00000000006dccc0 R08: 00007fe80bd08700 R09: 0000000000000000
R10: 00007fe80bd08700 R11: 0000000000000246 R12: 00000000006dcccc
R13: 0000000000000000 R14: 000000306e616c77 R15: ffffffff00000000
INFO: task syz-executor135:8077 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8077 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bce5c20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bce5d10 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bce5d60 RDI: 000000000000000d
RBP: 0000000000000000 R08: 00007fe80bce5c30 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bce5c94
R13: 0000000000000010 R14: 00007fe80bce5d60 R15: 000000000000000d
INFO: task syz-executor135:8078 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D30096 8078 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bcc4c80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bcc4d20 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bcc4d70 RDI: 000000000000000c
RBP: 0000000000000000 R08: 00007fe80bcc4c90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bcc4cf4
R13: 0000000000000010 R14: 00007fe80bcc4d70 R15: 000000000000000c
INFO: task syz-executor135:8087 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D28960 8087 8027 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x447ba9
RSP: 002b:00007fe80bca4d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dccf8 RCX: 0000000000447ba9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 000000000000000b
RBP: 00000000006dccf0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dccfc
R13: 0000000000000000 R14: 000000306e616c77 R15: ffffffff00000000
INFO: task syz-executor135:8064 blocked for more than 140 seconds.
Not tainted 4.14.202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor135 D29856 8064 8030 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x406767
RSP: 002b:00007fe80bd69c20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe80bd69d10 RCX: 0000000000406767
RDX: 0000000000000020 RSI: 00007fe80bd69d60 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007fe80bd69c30 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe80bd69c94
R13: 0000000000000010 R14: 00007fe80bd69d60 R15: 0000000000000006
Showing all locks held in the system:
3 locks held by kworker/0:0/3:
#0: ("%s"("ipv6_addrconf")){+.+.}, at: [<ffffffff813733a0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087
#1: ((addr_chk_work).work){+.+.}, at: [<ffffffff813733d6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091
#2: (rtnl_mutex){+.+.}, at: [<ffffffff8651dfba>] addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4412
1 lock held by khungtaskd/1531:
#0: (tasklist_lock){.+.+}, at: [<ffffffff81430a04>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by syz-executor135/8033:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8071:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8072:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8075:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8076:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8077:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8078:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8087:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8064:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8081:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8082:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8090:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8093:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8098:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8099:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8105:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8043:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8063:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8085:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8086:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8092:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8094:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8100:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8101:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8040:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8054:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8060:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8066:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8069:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8070:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8074:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8044:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8062:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8079:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8080:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8088:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8089:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8096:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8097:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8042:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8065:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8083:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8084:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8091:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8095:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8102:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8103:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
2 locks held by syz-executor135/8107:
#0: (cb_lock){++++}, at: [<ffffffff85fe15d5>] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_lock net/netlink/genetlink.c:33 [inline]
#1: (genl_mutex){+.+.}, at: [<ffffffff85fe2232>] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623
3 locks held by kworker/0:1/8053:
#0: ("events"){+.+.}, at: [<ffffffff813733a0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087
#1: ((linkwatch_work).work){+.+.}, at: [<ffffffff813733d6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091
#2: (rtnl_mutex){+.+.}, at: [<ffffffff85e3714a>] linkwatch_event+0xa/0x50 net/core/link_watch.c:236
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4617 Comm: systemd-journal Not tainted 4.14.202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a1638680 task.stack: ffff8880a1640000
RIP: 0010:__lock_release kernel/locking/lockdep.c:3794 [inline]
RIP: 0010:lock_release+0x2e8/0x870 kernel/locking/lockdep.c:4017
RSP: 0018:ffff8880a1647d70 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff110142c8fb1 RCX: 0000000000000000
RDX: ffff8880a1638f08 RSI: ffffffff88fd6f40 RDI: ffff8880a1638f2a
RBP: ffffffff88fd6f40 R08: ffffffff8b98f0c8 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a1638680 R12: ffffffff816c1530
R13: ffffffff8beb3d40 R14: ffff8880a1638680 R15: 0000000000000001
FS: 00007fc1509bd8c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc14ddca000 CR3: 00000000a18af000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_pre_alloc_hook mm/slab.h:417 [inline]
slab_alloc mm/slab.c:3376 [inline]
kmem_cache_alloc+0x29/0x3c0 mm/slab.c:3550
prepare_creds+0x39/0x490 kernel/cred.c:255
SYSC_faccessat fs/open.c:365 [inline]
SyS_faccessat+0x7b/0x680 fs/open.c:353
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fc14fc799c7
RSP: 002b:00007fff53633448 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007fff53636470 RCX: 00007fc14fc799c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055fe064b39a3
RBP: 00007fff53633590 R08: 000055fe064a93e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 000055fe07d388a0 R15: 00007fff53633a80
Code: fc ff df 48 89 f9 48 c1 e9 03 0f b6 04 01 84 c0 74 08 3c 03 0f 8e 66 03 00 00 66 83 6a 22 10 66 f7 42 22 f0 ff 0f 85 bf 00 00 00 <48> b8 00 00 00 00 00 fc ff df 48 8b 4c 24 08 8b 6c 24 38 48 c1
---
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