INFO: task syz-executor.1:5068 blocked for more than 143 seconds.
Not tainted 6.6.0-rc5-syzkaller-00234-g8cb1f10d8c4b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:18536 pid:5068 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
__super_lock fs/super.c:56 [inline]
__super_lock_excl fs/super.c:71 [inline]
deactivate_super+0xad/0xf0 fs/super.c:513
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
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+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1b1b67de17
RSP: 002b:00007ffc851bd338 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1b1b67de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc851bd3f0
RBP: 00007ffc851bd3f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc851be4b0
R13: 00007f1b1b6c73b9 R14: 00000000001555a3 R15: 0000000000000003
INFO: task syz-executor.2:24427 blocked for more than 143 seconds.
Not tainted 6.6.0-rc5-syzkaller-00234-g8cb1f10d8c4b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:25672 pid:24427 ppid:5064 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
jfs_flush_journal+0x72b/0xec0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684
dquot_quota_sync+0xdb/0x490 fs/quota/dquot.c:753
iterate_supers+0xc2/0x180 fs/super.c:968
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f951647cae9
RSP: 002b:00007f951712e0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f951659c050 RCX: 00007f951647cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000101
RBP: 00007f95164c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f951659c050 R15: 00007ffcda889348
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4793:
#0: ffff88802a4620a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
1 lock held by syz-executor.1/5068:
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
3 locks held by kworker/u4:12/14465:
1 lock held by syz-executor.2/24427:
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
1 lock held by syz-executor.2/24504:
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807b0180e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc5-syzkaller-00234-g8cb1f10d8c4b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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+0xfa9/0xff0 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:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 21160 Comm: kworker/0:0 Not tainted 6.6.0-rc5-syzkaller-00234-g8cb1f10d8c4b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:__kernel_text_address+0xf/0x40 kernel/extable.c:79
Code: c1 7c c7 48 c7 c7 40 01 9a 8e e8 cc 2f 8b 00 eb b9 66 2e 0f 1f 84 00 00 00 00 00 66 0f 1f 00 53 48 89 fb e8 33 00 00 00 85 c0 <0f> 95 c0 48 c7 c1 00 20 e0 8f 48 39 cb 0f 93 c1 48 c7 c2 6b cd f6
RSP: 0018:ffffc90014b0f5c8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff81e88468 RCX: ffff88801d55bb80
RDX: ffff88801d55bb80 RSI: 0000000000000001 RDI: ffffffff81e88468
RBP: 0000000000000001 R08: ffffffff813d9cb7 R09: ffffffff813db790
R10: 0000000000000003 R11: ffff88801d55bb80 R12: ffff88801d55bb80
R13: ffffffff817bb9d0 R14: dffffc0000000000 R15: 1ffff92002961ec9
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c001cd1000 CR3: 000000000d130000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11f/0x1a0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook mm/slub.c:1826 [inline]
slab_free mm/slub.c:3809 [inline]
__kmem_cache_free+0x25f/0x3b0 mm/slub.c:3822
skb_kfree_head net/core/skbuff.c:945 [inline]
skb_free_head net/core/skbuff.c:957 [inline]
skb_release_data+0x660/0x850 net/core/skbuff.c:987
skb_release_all net/core/skbuff.c:1053 [inline]
__kfree_skb net/core/skbuff.c:1067 [inline]
consume_skb+0xb3/0x150 net/core/skbuff.c:1283
nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline]
nsim_dev_trap_report_work+0x761/0xa90 drivers/net/netdevsim/dev.c:850
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 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:304