INFO: task syz-executor.1:10911 blocked for more than 143 seconds.
Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21552 pid:10911 tgid:10910 ppid:6457 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
xfs_ail_push_all_sync+0x236/0x310 fs/xfs/xfs_trans_ail.c:742
xfs_log_quiesce+0xe0/0x690 fs/xfs/xfs_log.c:1070
xfs_log_clean+0xa4/0xc40 fs/xfs/xfs_log.c:1082
xfs_remount_ro fs/xfs/xfs_super.c:1891 [inline]
xfs_fs_reconfigure+0x7d2/0x960 fs/xfs/xfs_super.c:1947
reconfigure_super+0x447/0x880 fs/super.c:1071
vfs_cmd_reconfigure fs/fsopen.c:267 [inline]
vfs_fsconfig_locked fs/fsopen.c:296 [inline]
__do_sys_fsconfig fs/fsopen.c:476 [inline]
__se_sys_fsconfig+0xab5/0xec0 fs/fsopen.c:349
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f949967dca9
RSP: 002b:00007f949a4570c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f94997abf80 RCX: 00007f949967dca9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f94996c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f94997abf80 R15: 00007fff8f0ccd88
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:5/989:
2 locks held by kworker/u8:6/2807:
2 locks held by getty/4838:
#0: ffff88802ae9f0a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-fuzzer/5080:
1 lock held by syz-executor.5/9994:
2 locks held by syz-executor.1/10911:
#0: ffff88805cc49070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:474 [inline]
#0: ffff88805cc49070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x8e6/0xec0 fs/fsopen.c:349
#1: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: vfs_cmd_reconfigure fs/fsopen.c:266 [inline]
#1: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: vfs_fsconfig_locked fs/fsopen.c:296 [inline]
#1: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:476 [inline]
#1: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: __se_sys_fsconfig+0xaab/0xec0 fs/fsopen.c:349
1 lock held by syz-executor.1/11591:
#0: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor.1/12328:
#0: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88804d6760e0 (&type->s_umount_key#71){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor.3/12432:
2 locks held by syz-executor.5/12453:
1 lock held by syz-executor.4/12456:
#0: ffff88804df65c68 (&pipe->mutex){+.+.}-{3:3}, at: pipe_release+0x4e/0x330 fs/pipe.c:727
1 lock held by syz-executor.4/12457:
#0: ffff88804df65c68 (&pipe->mutex){+.+.}-{3:3}, at: splice_file_to_pipe+0x2e/0x500 fs/splice.c:1292
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/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 PID: 11722 Comm: syz-executor.4 Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 0c f1 3e 0c 48 89 de 5b e9 73 2b 59 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d3 03 00 65 8b 15 f0 c2 6d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc900000077e0 EFLAGS: 00000086
RAX: ffffffff81414f97 RBX: ffffffff81fa81ef RCX: ffff888069929e00
RDX: dffffc0000000000 RSI: ffffffff81fa81ef RDI: ffffc900000078c0
RBP: ffffc900000078c0 R08: 0000000000000000 R09: ffffc900000079b0
R10: 0000000000000003 R11: ffffffff8181f000 R12: ffff888069929e00
R13: dffffc0000000000 R14: ffffc900000079a0 R15: ffffc900000078c0
FS: 0000555593be8480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00090de80 CR3: 000000001bff2000 CR4: 0000000000350ef0
Call Trace:
unwind_next_frame+0x27/0x2a00 arch/x86/kernel/unwind_orc.c:469
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc+0x174/0x340 mm/slub.c:3852
__sigqueue_alloc+0x42e/0x540 kernel/signal.c:428
__send_signal_locked+0x22f/0xdc0 kernel/signal.c:1119
do_send_sig_info kernel/signal.c:1301 [inline]
group_send_sig_info+0x292/0x310 kernel/signal.c:1453
do_bpf_send_signal+0x85/0x190 kernel/trace/bpf_trace.c:838
irq_work_single+0xe4/0x240 kernel/irq_work.c:221
irq_work_run_list kernel/irq_work.c:252 [inline]
irq_work_run+0x18b/0x350 kernel/irq_work.c:261
__sysvec_irq_work+0xb8/0x430 arch/x86/kernel/irq_work.c:22
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x9e/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ee 7f 6f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 d3 7c da f5 65 8b 05 34 98 78 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000bc27bc0 EFLAGS: 00000206
RAX: 8e187cdd0c55ea00 RBX: 1ffff92001784f7c RCX: ffffffff9472d603
RDX: dffffc0000000000 RSI: ffffffff8bcab8a0 RDI: 0000000000000001
RBP: ffffc9000bc27c50 R08: ffffffff8fa8fb6f R09: 1ffffffff1f51f6d
R10: dffffc0000000000 R11: fffffbfff1f51f6e R12: dffffc0000000000
R13: 1ffff92001784f78 R14: ffffc9000bc27be0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
unlock_task_sighand include/linux/sched/signal.h:754 [inline]
do_send_sig_info kernel/signal.c:1302 [inline]
group_send_sig_info+0x2e0/0x310 kernel/signal.c:1453
bpf_send_signal_common+0x2dd/0x430 kernel/trace/bpf_trace.c:881
____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:884
bpf_prog_8cc4ff36b5985b6a+0x1d/0x23
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:650 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run2+0x377/0x420 kernel/trace/bpf_trace.c:2420
trace_sys_exit include/trace/events/syscalls.h:44 [inline]
syscall_exit_work+0x171/0x190 kernel/entry/common.c:169
syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
syscall_exit_to_user_mode+0x273/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89