syzbot


INFO: task can't die in ipv6_sock_ac_close

Status: auto-closed as invalid on 2021/12/19 14:00
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 412d, last: 412d

Sample crash report:
INFO: task syz-executor.1:9686 can't die for more than 143 seconds.
task:syz-executor.1  state:D stack:27872 pid: 9686 ppid:  6566 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 ipv6_sock_ac_close+0xd5/0x110 net/ipv6/anycast.c:219
 inet6_release+0x44/0x70 net/ipv6/af_inet6.c:477
 __sock_release+0xcd/0x280 net/socket.c:649
 sock_close+0x18/0x20 net/socket.c:1314
 __fput+0x286/0x9f0 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc8d950467b
RSP: 002b:00007ffffde62af0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fc8d950467b
RDX: 0000000000000000 RSI: ffffffff894e0a81 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2e121d94
R10: 000000000000031a R11: 0000000000000293 R12: 00007fc8d9655b60
R13: 00007fc8d9655b60 R14: 00007fc8d9654f60 R15: 000000000003543a
 </TASK>
INFO: task syz-executor.1:9686 blocked for more than 143 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:27872 pid: 9686 ppid:  6566 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 ipv6_sock_ac_close+0xd5/0x110 net/ipv6/anycast.c:219
 inet6_release+0x44/0x70 net/ipv6/af_inet6.c:477
 __sock_release+0xcd/0x280 net/socket.c:649
 sock_close+0x18/0x20 net/socket.c:1314
 __fput+0x286/0x9f0 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc8d950467b
RSP: 002b:00007ffffde62af0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fc8d950467b
RDX: 0000000000000000 RSI: ffffffff894e0a81 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2e121d94
R10: 000000000000031a R11: 0000000000000293 R12: 00007fc8d9655b60
R13: 00007fc8d9655b60 R14: 00007fc8d9654f60 R15: 000000000003543a
 </TASK>
INFO: task syz-executor.4:9696 can't die for more than 143 seconds.
task:syz-executor.4  state:D stack:24592 pid: 9696 ppid:  6611 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 dev_deactivate_many+0x710/0xc60 net/sched/sch_generic.c:1302
 dev_deactivate+0xe9/0x1b0 net/sched/sch_generic.c:1312
 dev_qdisc_change_tx_queue_len+0x215/0x300 net/sched/sch_generic.c:1368
 dev_change_tx_queue_len+0x149/0x180 net/core/dev.c:8974
 do_setlink+0xb22/0x3970 net/core/rtnetlink.c:2742
 rtnl_group_changelink net/core/rtnetlink.c:3242 [inline]
 __rtnl_newlink+0xc06/0x1750 net/core/rtnetlink.c:3396
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506
 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 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: 0033:0x7efdced3da39
RSP: 002b:00007efdcc271188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007efdcee410e0 RCX: 00007efdced3da39
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007efdced97c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffebb4f56ff R14: 00007efdcc271300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:9703 can't die for more than 144 seconds.
task:syz-executor.2  state:D stack:27640 pid: 9703 ppid:  6568 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f3dd57e4a39
RSP: 002b:00007f3dd2d5a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3dd58e7f60 RCX: 00007f3dd57e4a39
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f3dd583ec5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed302021f R14: 00007f3dd2d5a300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:9703 blocked for more than 144 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:27640 pid: 9703 ppid:  6568 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f3dd57e4a39
RSP: 002b:00007f3dd2d5a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3dd58e7f60 RCX: 00007f3dd57e4a39
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f3dd583ec5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed302021f R14: 00007f3dd2d5a300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:9712 can't die for more than 144 seconds.
task:syz-executor.2  state:D stack:28032 pid: 9712 ppid:  6568 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f3dd57e4a39
RSP: 002b:00007f3dd2d39188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3dd58e8020 RCX: 00007f3dd57e4a39
RDX: 00000000200018c0 RSI: 0000000000008923 RDI: 0000000000000008
RBP: 00007f3dd583ec5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed302021f R14: 00007f3dd2d39300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:9712 blocked for more than 144 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:28032 pid: 9712 ppid:  6568 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f3dd57e4a39
RSP: 002b:00007f3dd2d39188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3dd58e8020 RCX: 00007f3dd57e4a39
RDX: 00000000200018c0 RSI: 0000000000008923 RDI: 0000000000000008
RBP: 00007f3dd583ec5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed302021f R14: 00007f3dd2d39300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.5:9706 can't die for more than 145 seconds.
task:syz-executor.5  state:D stack:27504 pid: 9706 ppid:  6795 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f092f6dda39
RSP: 002b:00007f092cc53188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f092f7e0f60 RCX: 00007f092f6dda39
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f092f737c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc87b4b56f R14: 00007f092cc53300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.5:9706 blocked for more than 145 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:27504 pid: 9706 ppid:  6795 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f092f6dda39
RSP: 002b:00007f092cc53188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f092f7e0f60 RCX: 00007f092f6dda39
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f092f737c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc87b4b56f R14: 00007f092cc53300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.5:9710 can't die for more than 145 seconds.
task:syz-executor.5  state:D stack:28688 pid: 9710 ppid:  6795 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f092f6dda39
RSP: 002b:00007f092cc32188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f092f7e1020 RCX: 00007f092f6dda39
RDX: 00000000200018c0 RSI: 0000000000008923 RDI: 0000000000000008
RBP: 00007f092f737c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc87b4b56f R14: 00007f092cc32300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.5:9710 blocked for more than 145 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:28688 pid: 9710 ppid:  6795 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f092f6dda39
RSP: 002b:00007f092cc32188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f092f7e1020 RCX: 00007f092f6dda39
RDX: 00000000200018c0 RSI: 0000000000008923 RDI: 0000000000000008
RBP: 00007f092f737c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc87b4b56f R14: 00007f092cc32300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:9719 can't die for more than 145 seconds.
task:syz-executor.3  state:D stack:27456 pid: 9719 ppid:  6570 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 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: 0033:0x7f510d484a39
RSP: 002b:00007f510a9fa188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f510d587f60 RCX: 00007f510d484a39
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f510d4dec5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0252804f R14: 00007f510a9fa300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:9719 blocked for more than 146 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27456 pid: 9719 ppid:  6570 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 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: 0033:0x7f510d484a39
RSP: 002b:00007f510a9fa188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f510d587f60 RCX: 00007f510d484a39
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f510d4dec5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0252804f R14: 00007f510a9fa300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.0:9725 can't die for more than 146 seconds.
task:syz-executor.0  state:D stack:27504 pid: 9725 ppid:  6564 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f62d3eb9a39
RSP: 002b:00007f62d142f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f62d3fbcf60 RCX: 00007f62d3eb9a39
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f62d3f13c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed725355f R14: 00007f62d142f300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.0:9725 blocked for more than 146 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:27504 pid: 9725 ppid:  6564 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f62d3eb9a39
RSP: 002b:00007f62d142f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f62d3fbcf60 RCX: 00007f62d3eb9a39
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f62d3f13c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed725355f R14: 00007f62d142f300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.0:9728 can't die for more than 147 seconds.
task:syz-executor.0  state:D stack:28688 pid: 9728 ppid:  6564 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f62d3eb9a39
RSP: 002b:00007f62d140e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f62d3fbd020 RCX: 00007f62d3eb9a39
RDX: 00000000200018c0 RSI: 0000000000008923 RDI: 0000000000000008
RBP: 00007f62d3f13c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed725355f R14: 00007f62d140e300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.0:9728 blocked for more than 147 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:28688 pid: 9728 ppid:  6564 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 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: 0033:0x7f62d3eb9a39
RSP: 002b:00007f62d140e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f62d3fbd020 RCX: 00007f62d3eb9a39
RDX: 00000000200018c0 RSI: 0000000000008923 RDI: 0000000000000008
RBP: 00007f62d3f13c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed725355f R14: 00007f62d140e300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8bb835a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/0:2/1019:
 #0: ffff888022632938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888022632938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888022632938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
 #0: ffff888022632938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
 #0: ffff888022632938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
 #0: ffff888022632938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
 #1: ffffc900048afdb0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
 #2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590
1 lock held by in:imklog/6236:
3 locks held by kworker/0:3/7146:
 #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
 #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
 #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
 #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
 #1: ffffc9000289fdb0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
 #2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x83/0xe10 net/wireless/reg.c:2423
2 locks held by syz-executor.1/9686:
 #0: ffff888035155c10 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
 #0: ffff888035155c10 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:648
 #1: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: ipv6_sock_ac_close+0xd5/0x110 net/ipv6/anycast.c:219
1 lock held by syz-executor.4/9696:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
1 lock held by syz-executor.2/9703:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
1 lock held by syz-executor.2/9712:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
1 lock held by syz-executor.5/9706:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
1 lock held by syz-executor.5/9710:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540
1 lock held by syz-executor.3/9719:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
1 lock held by syz-executor.0/9725:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x1a7/0xee0 net/core/dev_ioctl.c:586
1 lock held by syz-executor.0/9728:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x3a1/0xee0 net/core/dev_ioctl.c:540

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __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+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2968 Comm: systemd-journal Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_is_held include/linux/lockdep.h:283 [inline]
RIP: 0010:xa_head include/linux/xarray.h:1166 [inline]
RIP: 0010:xas_start+0xb8/0x730 lib/xarray.c:188
Code: 00 00 fc ff df 48 8b 2b 48 8d 7d 48 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c6 05 00 00 48 8d 7d 18 be ff ff ff ff 4c 8b 65 48 <e8> 13 68 41 05 31 ff 89 c5 89 c6 e8 e8 e1 6a fd 85 ed 0f 84 46 01
RSP: 0000:ffffc90001aef8d8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90001aef9c8 RCX: 0000000000000000
RDX: 1ffff1100f84b51e RSI: 00000000ffffffff RDI: ffff88807c25a8c0
RBP: ffff88807c25a8a8 R08: 0000000000000002 R09: 0000000000000001
R10: ffffffff840c953f R11: 0000000000000000 R12: ffff8880177fe942
R13: ffffc90001aef9e0 R14: ffff88807c25a6a0 R15: dffffc0000000000
FS:  00007f34c70418c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34c450c000 CR3: 000000007afa5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xas_load+0x28/0x140 lib/xarray.c:233
 mapping_get_entry mm/filemap.c:1835 [inline]
 __filemap_get_folio+0x160/0xd60 mm/filemap.c:1897
 pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125
 shmem_getpage_gfp+0x221/0x22d0 mm/shmem.c:1837
 shmem_fault+0x1b4/0x750 mm/shmem.c:2114
 __do_fault+0x10d/0x4d0 mm/memory.c:3849
 do_shared_fault mm/memory.c:4210 [inline]
 do_fault mm/memory.c:4288 [inline]
 handle_pte_fault mm/memory.c:4542 [inline]
 __handle_mm_fault+0x25ad/0x5120 mm/memory.c:4677
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4775
 do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1485 [inline]
 exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1541
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7f34c634a124
Code: fe 6f 4e 20 c5 fe 6f 56 40 c5 fe 6f 5e 60 c5 fe 6f 64 16 e0 c5 fe 6f 6c 16 c0 c5 fe 6f 74 16 a0 c5 fe 6f 7c 16 80 c5 fe 7f 07 <c5> fe 7f 4f 20 c5 fe 7f 57 40 c5 fe 7f 5f 60 c5 fe 7f 64 17 e0 c5
RSP: 002b:00007ffc479ba898 EFLAGS: 00010202
RAX: 00007f34c450bfc8 RBX: 0000000000000090 RCX: 000000000034bf88
RDX: 0000000000000090 RSI: 00007ffc479ba940 RDI: 00007f34c450bfc8
RBP: 0000000000000000 R08: 000000000034c058 R09: 00007ffc479bd9d0
R10: 00007ffc479e7090 R11: 00007f34c450bf88 R12: 00005627e9891e80
R13: 2dd36427fad1c470 R14: 00007ffc479bab30 R15: 00007ffc479ba940
 </TASK>
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	df 48 8b             	fisttps -0x75(%rax)
   3:	2b 48 8d             	sub    -0x73(%rax),%ecx
   6:	7d 48                	jge    0x50
   8:	48 89 fa             	mov    %rdi,%rdx
   b:	48 c1 ea 03          	shr    $0x3,%rdx
   f:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  13:	0f 85 c6 05 00 00    	jne    0x5df
  19:	48 8d 7d 18          	lea    0x18(%rbp),%rdi
  1d:	be ff ff ff ff       	mov    $0xffffffff,%esi
  22:	4c 8b 65 48          	mov    0x48(%rbp),%r12
* 26:	e8 13 68 41 05       	callq  0x541683e <-- trapping instruction
  2b:	31 ff                	xor    %edi,%edi
  2d:	89 c5                	mov    %eax,%ebp
  2f:	89 c6                	mov    %eax,%esi
  31:	e8 e8 e1 6a fd       	callq  0xfd6ae21e
  36:	85 ed                	test   %ebp,%ebp
  38:	0f                   	.byte 0xf
  39:	84 46 01             	test   %al,0x1(%rsi)

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/10/20 13:54 linux-next 51dba6e335ff 418a00eb .config log report info INFO: task can't die in ipv6_sock_ac_close
* Struck through repros no longer work on HEAD.