INFO: task syz-executor.3:32493 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00242-g090472ed9c92 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24560 pid:32493 tgid:32493 ppid:5102 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
blkdev_put+0xff/0x770 block/bdev.c:930
bdev_release+0x57/0x70 block/bdev.c:954
blkdev_release+0x3b/0x40 block/fops.c:616
__fput+0x3cc/0xa10 fs/file_table.c:394
__do_sys_close fs/open.c:1590 [inline]
__se_sys_close fs/open.c:1575 [inline]
__x64_sys_close+0x7e/0x100 fs/open.c:1575
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fd4f967b9da
RSP: 002b:00007fff0136c3e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fd4f967b9da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007fd4f979d980 R08: 0000001b32020000 R09: 0000000000000329
R10: 00000000819240ea R11: 0000000000000293 R12: 00000000001fcd29
R13: ffffffffffffffff R14: 00007fd4f9200000 R15: 00000000001fc9e8
INFO: task syz-executor.3:32495 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00242-g090472ed9c92 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27024 pid:32495 tgid:32493 ppid:5102 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
blkdev_put+0xff/0x770 block/bdev.c:930
bdev_release+0x57/0x70 block/bdev.c:954
blkdev_release+0x3b/0x40 block/fops.c:616
__fput+0x3cc/0xa10 fs/file_table.c:394
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x150 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x69/0x2a0 kernel/entry/common.c:296
do_syscall_64+0x52/0x110 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fd4f967cae9
RSP: 002b:00007fd4fa4ab0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fd4f979bf80 RCX: 00007fd4f967cae9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000005
RBP: 00007fd4f96c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd4f979bf80 R15: 00007fff0136c318
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4814:
#0: ffff8880261f40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by udevd/26220:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x123/0x480 block/bdev.c:788
1 lock held by syz-executor.3/32493:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xff/0x770 block/bdev.c:930
1 lock held by syz-executor.3/32495:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xff/0x770 block/bdev.c:930
1 lock held by syz-executor.3/32585:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x123/0x480 block/bdev.c:788
1 lock held by syz-executor.3/32586:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x123/0x480 block/bdev.c:788
1 lock held by syz-executor.3/32633:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x123/0x480 block/bdev.c:788
1 lock held by syz-executor.3/32634:
#0: ffff88801cd934c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x123/0x480 block/bdev.c:788
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-syzkaller-00242-g090472ed9c92 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:0 Not tainted 6.7.0-rc2-syzkaller-00242-g090472ed9c92 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x30/0x60 kernel/kcov.c:207
Code: 04 24 65 48 8b 0d 70 3f 75 7e 65 8b 15 71 3f 75 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 fc 15 00 00 00 74 2c <8b> 91 d8 15 00 00 83 fa 02 75 21 48 8b 91 e0 15 00 00 48 8b 32 48
RSP: 0018:ffffc90000107b90 EFLAGS: 00000246
RAX: ffffffff8ae54ca0 RBX: 0000000000000001 RCX: ffff888016a53b80
RDX: 0000000080000000 RSI: ffffffff8bbdf5a0 RDI: ffffffff8bbdf560
RBP: 0000000000000000 R08: ffffffff8ae54c8e R09: 1ffffffff21ba86c
R10: dffffc0000000000 R11: fffffbfff21ba86d R12: ffff888037118c80
R13: 000000000000035f R14: ffff8880292b0440 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0026b3000 CR3: 000000000d730000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:776 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x210/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2703
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242