INFO: task syz-executor:22511 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24000 pid:22511 tgid:22511 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f38ed17d0f0
RSP: 002b:00007ffeaed3bde0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f38ed17d0f0
RDX: 0000000000000002 RSI: 00007f38ed1f20af RDI: 00000000ffffff9c
RBP: 00007f38ed1f20af R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
INFO: task syz.9.6395:22555 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.6395 state:D stack:28384 pid:22555 tgid:22553 ppid:21146 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
lock_system_sleep+0x87/0xa0 kernel/power/main.c:56
snapshot_open+0x3f/0x2b0 kernel/power/user.c:56
misc_open+0x35a/0x420 drivers/char/misc.c:165
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2efa97e759
RSP: 002b:00007f2efb70e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2efab36058 RCX: 00007f2efa97e759
RDX: 0000000000002000 RSI: 0000000020000280 RDI: ffffffffffffff9c
RBP: 00007f2efa9f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2efab36058 R15: 00007ffcf2ada698
INFO: task syz.2.6400:22566 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.6400 state:D stack:28384 pid:22566 tgid:22565 ppid:21169 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f526d57e759
RSP: 002b:00007f526e39a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f526d735f80 RCX: 00007f526d57e759
RDX: 0000000000000000 RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007f526d5f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f526d735f80 R15: 00007ffcf0cacf48
INFO: task syz.3.6401:22570 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.6401 state:D stack:28384 pid:22570 tgid:22569 ppid:20616 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0148b7d0f0
RSP: 002b:00007f0149a33ef0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0148b7d0f0
RDX: 0000000000000002 RSI: 00007f0148bf14f4 RDI: 00000000ffffff9c
RBP: 00007f0148bf14f4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000024 R14: 00000000200000c0 R15: 00007ffcf300da68
INFO: task syz.8.6404:22586 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.6404 state:D stack:28384 pid:22586 tgid:22584 ppid:17729 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f152fd7d0f0
RSP: 002b:00007f1530a9fef0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f152fd7d0f0
RDX: 0000000000000002 RSI: 00007f152fdf14f4 RDI: 00000000ffffff9c
RBP: 00007f152fdf14f4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000024 R14: 0000000020000280 R15: 00007ffd241a6218
INFO: task syz-executor:22830 blocked for more than 145 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:28384 pid:22830 tgid:22830 ppid:1 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58eed7d071
RSP: 002b:00007fffcaef3860 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f58eed7d071
RDX: 0000000000000002 RSI: 00007f58eedf2004 RDI: 00000000ffffff9c
RBP: 00007f58eedf2004 R08: 0000000000000000 R09: 00007f58efa6d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
INFO: task syz-executor:22833 blocked for more than 145 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:28384 pid:22833 tgid:22833 ppid:1 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd14d97d071
RSP: 002b:00007ffd068075c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd14d97d071
RDX: 0000000000000002 RSI: 00007fd14d9f2004 RDI: 00000000ffffff9c
RBP: 00007fd14d9f2004 R08: 0000000000000000 R09: 00007fd14e66d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
INFO: task syz-executor:22834 blocked for more than 145 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:28136 pid:22834 tgid:22834 ppid:1 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8b6597d071
RSP: 002b:00007fff6c204130 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8b6597d071
RDX: 0000000000000002 RSI: 00007f8b659f2004 RDI: 00000000ffffff9c
RBP: 00007f8b659f2004 R08: 0000000000000000 R09: 00007f8b6666d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
INFO: task syz-executor:22836 blocked for more than 146 seconds.
Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:28384 pid:22836 tgid:22836 ppid:1 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
misc_open+0x63/0x420 drivers/char/misc.c:129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:941
vfs_open+0x82/0x3f0 fs/open.c:1071
do_open fs/namei.c:3828 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3987
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1424
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4a77b7d071
RSP: 002b:00007ffe19d8aa30 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f4a77b7d071
RDX: 0000000000000002 RSI: 00007f4a77bf2004 RDI: 00000000ffffff9c
RBP: 00007f4a77bf2004 R08: 0000000000000000 R09: 00007f4a7886d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1b8f00 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1b8f00 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1b8f00 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/5586:
#0: ffff88814df050a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
5 locks held by syz.1.1343/9390:
#0: ffff8880291262b8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x267/0x390 fs/file.c:1191
#1: ffff88803605a420 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:731
#2: ffff88807eb80088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x27b/0x500 fs/kernfs/file.c:325
#3: ffff888140e804b8 (kn->active#57){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x500 fs/kernfs/file.c:326
#4: ffffffff8e07e9c8 (system_transition_mutex){+.+.}-{4:4}, at: software_resume+0x63/0x400 kernel/power/hibernate.c:989
1 lock held by syz-executor/22511:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
2 locks held by syz.9.6395/22555:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
#1: ffffffff8e07e9c8 (system_transition_mutex){+.+.}-{4:4}, at: lock_system_sleep+0x87/0xa0 kernel/power/main.c:56
1 lock held by syz.2.6400/22566:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz.3.6401/22570:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz.8.6404/22586:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22830:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22833:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22834:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22836:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22854:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22859:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22862:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22863:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22865:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22870:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22877:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22880:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22881:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
1 lock held by syz-executor/22883:
#0: ffffffff8eeab3c8 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:129
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_kcov_mode kernel/kcov.c:185 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:217
Code: 76 7e a9 00 01 ff 00 48 8b 34 24 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0 00 75 35 8b 82 1c 16 00 00 85 c0 74 2b <8b> 82 f8 15 00 00 83 f8 02 75 20 48 8b 8a 00 16 00 00 8b 92 fc 15
RSP: 0018:ffffc90000107b18 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000080 RCX: ffffffff8aea838f
RDX: ffff88801d6aa440 RSI: ffffffff8aea81dd RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000080
R10: 0000000000000022 R11: 0000000000000002 R12: dffffc0000000000
R13: ffff8880611997e8 R14: 0000000000000022 R15: ffffffff8aea7890
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005581b3795600 CR3: 000000000df7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
batadv_nc_process_nc_paths.part.0+0x9d/0x3e0 net/batman-adv/network-coding.c:684
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline]
batadv_nc_worker+0xcc8/0x1060 net/batman-adv/network-coding.c:728
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244