INFO: task hung in sit_exit_batch_net
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syzbot
Nov 28, 2021, 6:15:22 AM11/28/21
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1326bcd9b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=5df4c4b3ac780074f124
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
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+5df4c4...@syzkaller.appspotmail.com
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
INFO: task kworker/u4:4:879 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:4 D25496 879 2 0x80000000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
__flush_work+0x4bb/0x8b0 kernel/workqueue.c:2926
flush_all_backlogs net/core/dev.c:5283 [inline]
rollback_registered_many+0x4b1/0xe70 net/core/dev.c:8181
unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9324
unregister_netdevice_many+0x36/0x50 net/core/dev.c:9323
sit_exit_batch_net+0x543/0x700 net/ipv6/sit.c:1893
ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156
cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Showing all locks held in the system:
5 locks held by kworker/u4:4/879:
#0: 0000000090658dfb ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000146d6500 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 00000000e4f99763 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521
#3: 00000000b44895b8 (rtnl_mutex){+.+.}, at: sit_exit_batch_net+0x88/0x700 net/ipv6/sit.c:1889
#4: 00000000545a7159 (cpu_hotplug_lock.rw_sem){++++}, at: get_online_cpus include/linux/cpu.h:137 [inline]
#4: 00000000545a7159 (cpu_hotplug_lock.rw_sem){++++}, at: flush_all_backlogs net/core/dev.c:5276 [inline]
#4: 00000000545a7159 (cpu_hotplug_lock.rw_sem){++++}, at: rollback_registered_many+0x3a8/0xe70 net/core/dev.c:8181
1 lock held by khungtaskd/1571:
#0: 000000009e3ea3f6 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7841:
#0: 0000000012b6fb43 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
2 locks held by agetty/7858:
#0: 00000000418e3050 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000047ebcb37 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
3 locks held by kworker/1:4/9394:
#0: 0000000065d74843 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000b5ddd3b8 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 00000000b44895b8 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150
7 locks held by syz-executor.3/1839:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1839 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_match.part.0+0x1e3/0x1530 net/ipv6/route.c:682
Code: 81 e7 00 00 40 00 44 89 fe e8 f9 fe 5a fa 45 85 ff 0f 85 fa 00 00 00 e8 7b fd 5a fa 44 89 ee 44 89 e2 48 89 df e8 4d 3f ff ff <bf> ff ff ff ff 41 89 c5 89 c6 e8 ce fe 5a fa 41 83 fd ff 0f 84 57
RSP: 0018:ffff8880ba006c48 EFLAGS: 00000292
RAX: 00000000fffffffd RBX: ffff88803ab19b40 RCX: ffffffff8706c805
RDX: 0000000000000100 RSI: ffffffff8706c88e RDI: 0000000000000005
RBP: ffff8880ba006cf0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000003
R13: 000000000000000d R14: ffff88803ab19b94 R15: 0000000000000000
FS: 00007fc838ce8700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555559a0848 CR3: 0000000009e6d000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
find_match net/ipv6/route.c:670 [inline]
find_rr_leaf net/ipv6/route.c:719 [inline]
rt6_select net/ipv6/route.c:769 [inline]
fib6_table_lookup+0x4c2/0xf40 net/ipv6/route.c:1876
ip6_pol_route+0x180/0x1270 net/ipv6/route.c:1909
fib6_rule_lookup+0x10b/0x4e0 net/ipv6/fib6_rules.c:118
ip6_route_input_lookup net/ipv6/route.c:1990 [inline]
ip6_route_input+0x6c0/0xaa0 net/ipv6/route.c:2125
ip6_rcv_finish_core.constprop.0.isra.0+0xd7/0x550 net/ipv6/ip6_input.c:63
ip6_rcv_finish+0x176/0x2f0 net/ipv6/ip6_input.c:74
ip_sabotage_in net/bridge/br_netfilter_hooks.c:847 [inline]
ip_sabotage_in+0x17d/0x1d0 net/bridge/br_netfilter_hooks.c:841
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
ipv6_rcv+0x26a/0x3f0 net/ipv6/ip6_input.c:273
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954
__netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066
netif_receive_skb_internal+0xf0/0x3f0 net/core/dev.c:5156
NF_HOOK include/linux/netfilter.h:289 [inline]
br_pass_frame_up+0x309/0x6c0 net/bridge/br_input.c:69
br_handle_frame_finish+0x6f2/0x1410 net/bridge/br_input.c:173
br_nf_hook_thresh+0x2a3/0x330 net/bridge/br_netfilter_hooks.c:1014
br_nf_pre_routing_finish_ipv6+0x6e3/0xd40 net/bridge/br_netfilter_ipv6.c:210
NF_HOOK include/linux/netfilter.h:289 [inline]
br_nf_pre_routing_ipv6+0x3f4/0x860 net/bridge/br_netfilter_ipv6.c:240
br_nf_pre_routing+0xf05/0x1500 net/bridge/br_netfilter_hooks.c:494
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
br_handle_frame+0xa60/0x13b0 net/bridge/br_input.c:306
__netif_receive_skb_core+0x929/0x3270 net/core/dev.c:4876
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:4952
__netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066
process_backlog+0x241/0x700 net/core/dev.c:5849
napi_poll net/core/dev.c:6280 [inline]
net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911
Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b
RSP: 0018:ffff888036b07668 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a9c72200 RCX: ff934e6a97baa5c9
RDX: dffffc0000000000 RSI: 000000009dc2ee2c RDI: 0000000000000286
RBP: ffffffff89f85fa0 R08: 0000000031958bc5 R09: 0000000000000001
R10: ffff8880a9c72ab0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:627 [inline]
lock_page_memcg+0x36/0x220 mm/memcontrol.c:1908
page_remove_file_rmap+0x36/0xa30 mm/rmap.c:1212
page_remove_rmap+0xe5/0x120 mm/rmap.c:1297
zap_pte_range mm/memory.c:1350 [inline]
zap_pmd_range mm/memory.c:1463 [inline]
zap_pud_range mm/memory.c:1492 [inline]
zap_p4d_range mm/memory.c:1513 [inline]
unmap_page_range+0x147d/0x2c50 mm/memory.c:1534
unmap_single_vma+0x198/0x300 mm/memory.c:1579
unmap_vmas+0xa9/0x180 mm/memory.c:1609
exit_mmap+0x2b9/0x530 mm/mmap.c:3093
__mmput kernel/fork.c:1016 [inline]
mmput+0x14e/0x4a0 kernel/fork.c:1037
exit_mm kernel/exit.c:549 [inline]
do_exit+0xaec/0x2be0 kernel/exit.c:857
do_group_exit+0x125/0x310 kernel/exit.c:967
get_signal+0x3f2/0x1f70 kernel/signal.c:2589
do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc83b772ae9
Code: Bad RIP value.
RSP: 002b:00007fc838ce8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: 0000000000000008 RBX: 00007fc83b885f60 RCX: 00007fc83b772ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00007fc83b7ccf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc143b560f R14: 00007fc838ce8300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 81 e7 00 00 40 00 and $0x400000,%edi
6: 44 89 fe mov %r15d,%esi
9: e8 f9 fe 5a fa callq 0xfa5aff07
e: 45 85 ff test %r15d,%r15d
11: 0f 85 fa 00 00 00 jne 0x111
17: e8 7b fd 5a fa callq 0xfa5afd97
1c: 44 89 ee mov %r13d,%esi
1f: 44 89 e2 mov %r12d,%edx
22: 48 89 df mov %rbx,%rdi
25: e8 4d 3f ff ff callq 0xffff3f77
* 2a: bf ff ff ff ff mov $0xffffffff,%edi <-- trapping instruction
2f: 41 89 c5 mov %eax,%r13d
32: 89 c6 mov %eax,%esi
34: e8 ce fe 5a fa callq 0xfa5aff07
39: 41 83 fd ff cmp $0xffffffff,%r13d
3d: 0f .byte 0xf
3e: 84 .byte 0x84
3f: 57 push %rdi
---
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: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1326bcd9b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=5df4c4b3ac780074f124
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
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+5df4c4...@syzkaller.appspotmail.com
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
INFO: task kworker/u4:4:879 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:4 D25496 879 2 0x80000000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
__flush_work+0x4bb/0x8b0 kernel/workqueue.c:2926
flush_all_backlogs net/core/dev.c:5283 [inline]
rollback_registered_many+0x4b1/0xe70 net/core/dev.c:8181
unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9324
unregister_netdevice_many+0x36/0x50 net/core/dev.c:9323
sit_exit_batch_net+0x543/0x700 net/ipv6/sit.c:1893
ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156
cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Showing all locks held in the system:
5 locks held by kworker/u4:4/879:
#0: 0000000090658dfb ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000146d6500 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 00000000e4f99763 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521
#3: 00000000b44895b8 (rtnl_mutex){+.+.}, at: sit_exit_batch_net+0x88/0x700 net/ipv6/sit.c:1889
#4: 00000000545a7159 (cpu_hotplug_lock.rw_sem){++++}, at: get_online_cpus include/linux/cpu.h:137 [inline]
#4: 00000000545a7159 (cpu_hotplug_lock.rw_sem){++++}, at: flush_all_backlogs net/core/dev.c:5276 [inline]
#4: 00000000545a7159 (cpu_hotplug_lock.rw_sem){++++}, at: rollback_registered_many+0x3a8/0xe70 net/core/dev.c:8181
1 lock held by khungtaskd/1571:
#0: 000000009e3ea3f6 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7841:
#0: 0000000012b6fb43 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
2 locks held by agetty/7858:
#0: 00000000418e3050 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000047ebcb37 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
3 locks held by kworker/1:4/9394:
#0: 0000000065d74843 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000b5ddd3b8 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 00000000b44895b8 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150
7 locks held by syz-executor.3/1839:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1839 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_match.part.0+0x1e3/0x1530 net/ipv6/route.c:682
Code: 81 e7 00 00 40 00 44 89 fe e8 f9 fe 5a fa 45 85 ff 0f 85 fa 00 00 00 e8 7b fd 5a fa 44 89 ee 44 89 e2 48 89 df e8 4d 3f ff ff <bf> ff ff ff ff 41 89 c5 89 c6 e8 ce fe 5a fa 41 83 fd ff 0f 84 57
RSP: 0018:ffff8880ba006c48 EFLAGS: 00000292
RAX: 00000000fffffffd RBX: ffff88803ab19b40 RCX: ffffffff8706c805
RDX: 0000000000000100 RSI: ffffffff8706c88e RDI: 0000000000000005
RBP: ffff8880ba006cf0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000003
R13: 000000000000000d R14: ffff88803ab19b94 R15: 0000000000000000
FS: 00007fc838ce8700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555559a0848 CR3: 0000000009e6d000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
find_match net/ipv6/route.c:670 [inline]
find_rr_leaf net/ipv6/route.c:719 [inline]
rt6_select net/ipv6/route.c:769 [inline]
fib6_table_lookup+0x4c2/0xf40 net/ipv6/route.c:1876
ip6_pol_route+0x180/0x1270 net/ipv6/route.c:1909
fib6_rule_lookup+0x10b/0x4e0 net/ipv6/fib6_rules.c:118
ip6_route_input_lookup net/ipv6/route.c:1990 [inline]
ip6_route_input+0x6c0/0xaa0 net/ipv6/route.c:2125
ip6_rcv_finish_core.constprop.0.isra.0+0xd7/0x550 net/ipv6/ip6_input.c:63
ip6_rcv_finish+0x176/0x2f0 net/ipv6/ip6_input.c:74
ip_sabotage_in net/bridge/br_netfilter_hooks.c:847 [inline]
ip_sabotage_in+0x17d/0x1d0 net/bridge/br_netfilter_hooks.c:841
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
ipv6_rcv+0x26a/0x3f0 net/ipv6/ip6_input.c:273
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954
__netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066
netif_receive_skb_internal+0xf0/0x3f0 net/core/dev.c:5156
NF_HOOK include/linux/netfilter.h:289 [inline]
br_pass_frame_up+0x309/0x6c0 net/bridge/br_input.c:69
br_handle_frame_finish+0x6f2/0x1410 net/bridge/br_input.c:173
br_nf_hook_thresh+0x2a3/0x330 net/bridge/br_netfilter_hooks.c:1014
br_nf_pre_routing_finish_ipv6+0x6e3/0xd40 net/bridge/br_netfilter_ipv6.c:210
NF_HOOK include/linux/netfilter.h:289 [inline]
br_nf_pre_routing_ipv6+0x3f4/0x860 net/bridge/br_netfilter_ipv6.c:240
br_nf_pre_routing+0xf05/0x1500 net/bridge/br_netfilter_hooks.c:494
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
br_handle_frame+0xa60/0x13b0 net/bridge/br_input.c:306
__netif_receive_skb_core+0x929/0x3270 net/core/dev.c:4876
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:4952
__netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066
process_backlog+0x241/0x700 net/core/dev.c:5849
napi_poll net/core/dev.c:6280 [inline]
net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911
Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b
RSP: 0018:ffff888036b07668 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a9c72200 RCX: ff934e6a97baa5c9
RDX: dffffc0000000000 RSI: 000000009dc2ee2c RDI: 0000000000000286
RBP: ffffffff89f85fa0 R08: 0000000031958bc5 R09: 0000000000000001
R10: ffff8880a9c72ab0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:627 [inline]
lock_page_memcg+0x36/0x220 mm/memcontrol.c:1908
page_remove_file_rmap+0x36/0xa30 mm/rmap.c:1212
page_remove_rmap+0xe5/0x120 mm/rmap.c:1297
zap_pte_range mm/memory.c:1350 [inline]
zap_pmd_range mm/memory.c:1463 [inline]
zap_pud_range mm/memory.c:1492 [inline]
zap_p4d_range mm/memory.c:1513 [inline]
unmap_page_range+0x147d/0x2c50 mm/memory.c:1534
unmap_single_vma+0x198/0x300 mm/memory.c:1579
unmap_vmas+0xa9/0x180 mm/memory.c:1609
exit_mmap+0x2b9/0x530 mm/mmap.c:3093
__mmput kernel/fork.c:1016 [inline]
mmput+0x14e/0x4a0 kernel/fork.c:1037
exit_mm kernel/exit.c:549 [inline]
do_exit+0xaec/0x2be0 kernel/exit.c:857
do_group_exit+0x125/0x310 kernel/exit.c:967
get_signal+0x3f2/0x1f70 kernel/signal.c:2589
do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc83b772ae9
Code: Bad RIP value.
RSP: 002b:00007fc838ce8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: 0000000000000008 RBX: 00007fc83b885f60 RCX: 00007fc83b772ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00007fc83b7ccf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc143b560f R14: 00007fc838ce8300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 81 e7 00 00 40 00 and $0x400000,%edi
6: 44 89 fe mov %r15d,%esi
9: e8 f9 fe 5a fa callq 0xfa5aff07
e: 45 85 ff test %r15d,%r15d
11: 0f 85 fa 00 00 00 jne 0x111
17: e8 7b fd 5a fa callq 0xfa5afd97
1c: 44 89 ee mov %r13d,%esi
1f: 44 89 e2 mov %r12d,%edx
22: 48 89 df mov %rbx,%rdi
25: e8 4d 3f ff ff callq 0xffff3f77
* 2a: bf ff ff ff ff mov $0xffffffff,%edi <-- trapping instruction
2f: 41 89 c5 mov %eax,%r13d
32: 89 c6 mov %eax,%esi
34: e8 ce fe 5a fa callq 0xfa5aff07
39: 41 83 fd ff cmp $0xffffffff,%r13d
3d: 0f .byte 0xf
3e: 84 .byte 0x84
3f: 57 push %rdi
---
This report is generated by a bot. It may contain errors.
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syzbot
May 3, 2022, 7:37:23 AM5/3/22
to syzkaller...@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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