INFO: task can't die in rfcomm_dlc_open
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syzbot
Aug 17, 2021, 6:15:24 PM8/17/21
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 4b358aabb93a Add linux-next specific files for 20210813
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12c154ee300000
kernel config: https://syzkaller.appspot.com/x/.config?x=b99612666fbe2d6a
dashboard link: https://syzkaller.appspot.com/bug?extid=068daa0ce5cfeafef437
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1
CC: [da...@davemloft.net johan....@gmail.com ku...@kernel.org linux-b...@vger.kernel.org linux-...@vger.kernel.org luiz....@gmail.com mar...@holtmann.org net...@vger.kernel.org]
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+068daa...@syzkaller.appspotmail.com
INFO: task syz-executor.0:23882 can't die for more than 143 seconds.
task:syz-executor.0 state:D stack:27424 pid:23882 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104
__mutex_lock_common kernel/locking/mutex.c:1036 [inline]
__mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096
rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425
rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac0a8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd8afbfbcf R14: 00007f38ac0a8300 R15: 0000000000022000
INFO: task syz-executor.0:23882 blocked for more than 143 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27424 pid:23882 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104
__mutex_lock_common kernel/locking/mutex.c:1036 [inline]
__mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096
rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425
rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac0a8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd8afbfbcf R14: 00007f38ac0a8300 R15: 0000000000022000
INFO: task syz-executor.0:23887 can't die for more than 143 seconds.
task:syz-executor.0 state:D stack:28808 pid:23887 ppid: 6597 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557
rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac087188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffd8afbfbcf R14: 00007f38ac087300 R15: 0000000000022000
INFO: task syz-executor.0:23887 blocked for more than 144 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28808 pid:23887 ppid: 6597 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557
rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac087188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffd8afbfbcf R14: 00007f38ac087300 R15: 0000000000022000
INFO: task syz-executor.0:23891 can't die for more than 144 seconds.
task:syz-executor.0 state:D stack:30272 pid:23891 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73
__rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489
rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520
__rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220
rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac066188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffd8afbfbcf R14: 00007f38ac066300 R15: 0000000000022000
INFO: task syz-executor.0:23891 blocked for more than 144 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:30272 pid:23891 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73
__rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489
rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520
__rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220
rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac066188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffd8afbfbcf R14: 00007f38ac066300 R15: 0000000000022000
INFO: task syz-executor.0:23939 can't die for more than 144 seconds.
task:syz-executor.0 state:D stack:29168 pid:23939 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sock_shutdown+0x54/0x210 net/bluetooth/rfcomm/sock.c:928
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac024188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c260
R13: 00007ffd8afbfbcf R14: 00007f38ac024300 R15: 0000000000022000
INFO: task syz-executor.0:23939 blocked for more than 144 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29168 pid:23939 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sock_shutdown+0x54/0x210 net/bluetooth/rfcomm/sock.c:928
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac024188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c260
R13: 00007ffd8afbfbcf R14: 00007f38ac024300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6875 Comm: kworker/u4:3 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:rcu_read_unlock_sched_notrace include/linux/rcupdate.h:809 [inline]
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0x52d/0x720 kernel/locking/lockdep.c:5636
Code: c0 0f 85 a5 fe ff ff e9 ec 91 92 07 65 ff 05 da d0 a6 7e 48 8b 05 d3 ac fe 0b e8 9e e8 05 00 85 c0 74 17 65 ff 0d c3 d0 a6 7e <0f> 85 7c fb ff ff e8 e7 26 a5 ff e9 72 fb ff ff e8 2e a6 d4 07 85
RSP: 0018:ffffc9000314fbd0 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815b1ab1
RDX: fffffbfff1adbe4b RSI: 0000000000000008 RDI: ffffffff8d6df250
RBP: 1ffff92000629f7c R08: 0000000000000000 R09: ffffffff8d6df257
R10: fffffbfff1adbe4a R11: 0000000000000000 R12: ffffffff8b97eb80
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000208
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed8d193028 CR3: 000000001a680000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:272 [inline]
rcu_read_unlock include/linux/rcupdate.h:720 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x771/0xe50 net/batman-adv/network-coding.c:715
process_one_work+0x98d/0x1630 kernel/workqueue.c:2275
worker_thread+0x658/0x11f0 kernel/workqueue.c:2421
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 0f 85 a5 fe ff ff jne 0xfffffeab
6: e9 ec 91 92 07 jmpq 0x79291f7
b: 65 ff 05 da d0 a6 7e incl %gs:0x7ea6d0da(%rip) # 0x7ea6d0ec
12: 48 8b 05 d3 ac fe 0b mov 0xbfeacd3(%rip),%rax # 0xbfeacec
19: e8 9e e8 05 00 callq 0x5e8bc
1e: 85 c0 test %eax,%eax
20: 74 17 je 0x39
22: 65 ff 0d c3 d0 a6 7e decl %gs:0x7ea6d0c3(%rip) # 0x7ea6d0ec
29: 0f 85 7c fb ff ff jne 0xfffffbab <-- trapping instruction
2f: e8 e7 26 a5 ff callq 0xffa5271b
34: e9 72 fb ff ff jmpq 0xfffffbab
39: e8 2e a6 d4 07 callq 0x7d4a66c
3e: 85 .byte 0x85
---
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:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 4b358aabb93a Add linux-next specific files for 20210813
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12c154ee300000
kernel config: https://syzkaller.appspot.com/x/.config?x=b99612666fbe2d6a
dashboard link: https://syzkaller.appspot.com/bug?extid=068daa0ce5cfeafef437
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1
CC: [da...@davemloft.net johan....@gmail.com ku...@kernel.org linux-b...@vger.kernel.org linux-...@vger.kernel.org luiz....@gmail.com mar...@holtmann.org net...@vger.kernel.org]
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+068daa...@syzkaller.appspotmail.com
INFO: task syz-executor.0:23882 can't die for more than 143 seconds.
task:syz-executor.0 state:D stack:27424 pid:23882 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104
__mutex_lock_common kernel/locking/mutex.c:1036 [inline]
__mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096
rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425
rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac0a8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd8afbfbcf R14: 00007f38ac0a8300 R15: 0000000000022000
INFO: task syz-executor.0:23882 blocked for more than 143 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27424 pid:23882 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104
__mutex_lock_common kernel/locking/mutex.c:1036 [inline]
__mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096
rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425
rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac0a8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd8afbfbcf R14: 00007f38ac0a8300 R15: 0000000000022000
INFO: task syz-executor.0:23887 can't die for more than 143 seconds.
task:syz-executor.0 state:D stack:28808 pid:23887 ppid: 6597 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557
rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac087188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffd8afbfbcf R14: 00007f38ac087300 R15: 0000000000022000
INFO: task syz-executor.0:23887 blocked for more than 144 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28808 pid:23887 ppid: 6597 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557
rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416
__sys_connect_file+0x155/0x1a0 net/socket.c:1890
__sys_connect+0x161/0x190 net/socket.c:1907
__do_sys_connect net/socket.c:1917 [inline]
__se_sys_connect net/socket.c:1914 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1914
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac087188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffd8afbfbcf R14: 00007f38ac087300 R15: 0000000000022000
INFO: task syz-executor.0:23891 can't die for more than 144 seconds.
task:syz-executor.0 state:D stack:30272 pid:23891 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73
__rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489
rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520
__rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220
rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac066188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffd8afbfbcf R14: 00007f38ac066300 R15: 0000000000022000
INFO: task syz-executor.0:23891 blocked for more than 144 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:30272 pid:23891 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73
__rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489
rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520
__rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220
rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac066188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffd8afbfbcf R14: 00007f38ac066300 R15: 0000000000022000
INFO: task syz-executor.0:23939 can't die for more than 144 seconds.
task:syz-executor.0 state:D stack:29168 pid:23939 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sock_shutdown+0x54/0x210 net/bluetooth/rfcomm/sock.c:928
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac024188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c260
R13: 00007ffd8afbfbcf R14: 00007f38ac024300 R15: 0000000000022000
INFO: task syz-executor.0:23939 blocked for more than 144 seconds.
Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29168 pid:23939 ppid: 6597 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4711 [inline]
__schedule+0x93a/0x26f0 kernel/sched/core.c:5966
schedule+0xd3/0x270 kernel/sched/core.c:6045
__lock_sock+0x13d/0x260 net/core/sock.c:2645
lock_sock_nested+0xf6/0x120 net/core/sock.c:3178
lock_sock include/net/sock.h:1612 [inline]
rfcomm_sock_shutdown+0x54/0x210 net/bluetooth/rfcomm/sock.c:928
__sys_shutdown_sock net/socket.c:2242 [inline]
__sys_shutdown_sock net/socket.c:2236 [inline]
__sys_shutdown+0xf1/0x1b0 net/socket.c:2254
__do_sys_shutdown net/socket.c:2262 [inline]
__se_sys_shutdown net/socket.c:2260 [inline]
__x64_sys_shutdown+0x50/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f38ac024188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c260
R13: 00007ffd8afbfbcf R14: 00007f38ac024300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6875 Comm: kworker/u4:3 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:rcu_read_unlock_sched_notrace include/linux/rcupdate.h:809 [inline]
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0x52d/0x720 kernel/locking/lockdep.c:5636
Code: c0 0f 85 a5 fe ff ff e9 ec 91 92 07 65 ff 05 da d0 a6 7e 48 8b 05 d3 ac fe 0b e8 9e e8 05 00 85 c0 74 17 65 ff 0d c3 d0 a6 7e <0f> 85 7c fb ff ff e8 e7 26 a5 ff e9 72 fb ff ff e8 2e a6 d4 07 85
RSP: 0018:ffffc9000314fbd0 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815b1ab1
RDX: fffffbfff1adbe4b RSI: 0000000000000008 RDI: ffffffff8d6df250
RBP: 1ffff92000629f7c R08: 0000000000000000 R09: ffffffff8d6df257
R10: fffffbfff1adbe4a R11: 0000000000000000 R12: ffffffff8b97eb80
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000208
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed8d193028 CR3: 000000001a680000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:272 [inline]
rcu_read_unlock include/linux/rcupdate.h:720 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x771/0xe50 net/batman-adv/network-coding.c:715
process_one_work+0x98d/0x1630 kernel/workqueue.c:2275
worker_thread+0x658/0x11f0 kernel/workqueue.c:2421
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 0f 85 a5 fe ff ff jne 0xfffffeab
6: e9 ec 91 92 07 jmpq 0x79291f7
b: 65 ff 05 da d0 a6 7e incl %gs:0x7ea6d0da(%rip) # 0x7ea6d0ec
12: 48 8b 05 d3 ac fe 0b mov 0xbfeacd3(%rip),%rax # 0xbfeacec
19: e8 9e e8 05 00 callq 0x5e8bc
1e: 85 c0 test %eax,%eax
20: 74 17 je 0x39
22: 65 ff 0d c3 d0 a6 7e decl %gs:0x7ea6d0c3(%rip) # 0x7ea6d0ec
29: 0f 85 7c fb ff ff jne 0xfffffbab <-- trapping instruction
2f: e8 e7 26 a5 ff callq 0xffa5271b
34: e9 72 fb ff ff jmpq 0xfffffbab
39: e8 2e a6 d4 07 callq 0x7d4a66c
3e: 85 .byte 0x85
---
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.
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syzbot
Oct 12, 2021, 6:04:22 PM10/12/21
to syzkaller-upst...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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