INFO: task syz-executor.0:5090 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00265-gd2da77f431ac #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20528 pid:5090 tgid:5090 ppid:1 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_timeout+0xb0/0x300 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x354/0x620 kernel/sched/completion.c:148
btrfs_qgroup_wait_for_completion+0x92/0xb0 fs/btrfs/qgroup.c:3835
close_ctree+0x118/0xd40 fs/btrfs/disk-io.c:4259
generic_shutdown_super+0x13a/0x2c0 fs/super.c:696
kill_anon_super+0x3b/0x70 fs/super.c:1295
btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2097
deactivate_locked_super+0xc1/0x130 fs/super.c:484
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256
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: 0033:0x7f6ba4e7de17
RSP: 002b:00007ffe0e4e0318 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6ba4e7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe0e4e03d0
RBP: 00007ffe0e4e03d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe0e4e1490
R13: 00007f6ba4ec73b9 R14: 0000000000066a43 R15: 0000000000000008
INFO: task syz-executor.2:10611 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00265-gd2da77f431ac #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26608 pid:10611 tgid:10610 ppid:5091 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
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x176/0x3a0 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0x8c/0x180 fs/super.c:969
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
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: 0033:0x7f9f9387cae9
RSP: 002b:00007f9f946530c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f9f9399bf80 RCX: 00007f9f9387cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f9f938c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9f9399bf80 R15: 00007ffe8d3fe6d8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4813:
#0: ffff88802649b0a0 (&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 syz-executor.0/5090:
#0: ffff88823bdd40e0 (&type->s_umount_key#66){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88823bdd40e0 (&type->s_umount_key#66){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88823bdd40e0 (&type->s_umount_key#66){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:516
1 lock held by syz-executor.2/10611:
#0: ffff88823bdd40e0 (&type->s_umount_key#66){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88823bdd40e0 (&type->s_umount_key#66){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-syzkaller-00265-gd2da77f431ac #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 48 Comm: kworker/u4:3 Not tainted 6.7.0-rc2-syzkaller-00265-gd2da77f431ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:217 [inline]
RIP: 0010:unwind_next_frame+0x251/0x29e0 arch/x86/kernel/unwind_orc.c:494
Code: 48 29 c1 48 c1 e9 02 45 31 ed 80 3d 50 df f6 0b 00 44 0f 45 e9 41 8d 5d ff 89 df 89 ee e8 57 cb 50 00 39 eb 0f 86 f7 1d 00 00 <89> e8 48 8d 1c 85 c4 23 20 90 48 89 d8 48 c1 e8 03 49 be 00 00 00
RSP: 0018:ffffc90000b8f6c8 EFLAGS: 00000212
RAX: 0000000000000000 RBX: 00000000000a6000 RCX: 00000000000a6001
RDX: ffff888015ed8000 RSI: 0000000000005ced RDI: 00000000000a6000
RBP: 0000000000005ced R08: ffffffff813db069 R09: ffffc90000b8f890
R10: 0000000000000003 R11: ffff888015ed8000 R12: ffffc90000b8f7a0
R13: 00000000000a6001 R14: ffffffff8b600000 R15: ffffffff815cedef
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558d6e33d278 CR3: 000000000d730000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x146/0x1a0 arch/x86/kernel/stacktrace.c:25
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+0x263/0x3a0 mm/slub.c:3822
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