INFO: task syz-executor.5:27538 blocked for more than 143 seconds.
Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23304 pid:27538 ppid:12752 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1034/0x1870 fs/fuse/dev.c:511
fuse_access fs/fuse/dir.c:1292 [inline]
fuse_permission+0x85b/0xe30 fs/fuse/dir.c:1371
do_inode_permission fs/namei.c:458 [inline]
inode_permission+0x22c/0x450 fs/namei.c:525
path_permission include/linux/fs.h:2916 [inline]
__do_sys_chdir fs/open.c:518 [inline]
__se_sys_chdir+0x146/0x220 fs/open.c:508
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f357048b639
RSP: 002b:00007f3571222168 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f35705abf80 RCX: 00007f357048b639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020004340
RBP: 00007f35704e6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9d3bccef R14: 00007f3571222300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/u4:0/9:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d327330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d327160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/0:2/153:
#0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90002defd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffffffff8d32c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#2: ffffffff8d32c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
2 locks held by getty/3306:
#0: ffff8880137b7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:6/3720:
#0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900045b7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
3 locks held by kworker/0:7/3722:
#0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900045e7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffffffff8d32c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8d32c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/1:11/4815:
#0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9001550fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:17/5062:
#0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9001597fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/u4:9/25599:
#0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90004a8fd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/u4:12/27407:
#0: ffff888012869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000529fd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by syz-executor.5/32469:
#0: ffff888021f160e0 (&type->s_umount_key#81/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
2 locks held by syz-executor.4/32489:
2 locks held by syz-executor.4/32495:
#0: ffff88814b456460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5d6/0xf80 fs/read_write.c:1254
#1: ffff888074315440 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 27748 Comm: udevd Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:folio_activate+0x0/0x9a0 mm/swap.c:370
Code: fc ff ff 48 ff cb e8 1f 2f cf ff 4c 39 f3 0f 84 e7 fc ff ff e8 11 2f cf ff 4c 89 f7 48 c7 c6 60 7e f8 8a e8 32 d4 0b 00 0f 0b <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 49 89 fd 48 bd 00 00 00
RSP: 0018:ffffc90016887b78 EFLAGS: 00000293
RAX: ffffffff81bb9657 RBX: 0000000000000010 RCX: ffff888037d89d40
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffea0001331e40
RBP: dffffc0000000000 R08: ffffffff81bb9527 R09: fffff940002663c9
R10: fffff940002663c9 R11: 1ffffd40002663c8 R12: dffffc0000000000
R13: 1ffffd40002663c9 R14: ffffea0001331e48 R15: ffffea0001331e40
FS: 00007fe6db1ff840(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f2aa153 CR3: 000000003376c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
folio_mark_accessed+0x38f/0xb50 mm/swap.c:498
shmem_file_read_iter+0x5c2/0xae0 mm/shmem.c:2659
call_read_iter include/linux/fs.h:2185 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x7ac/0xbf0 fs/read_write.c:470
ksys_read+0x177/0x2a0 fs/read_write.c:613
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe6db3258fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007ffe9ac80e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055c9dd786cb0 RCX: 00007fe6db3258fe
RDX: 0000000000001000 RSI: 000055c9dd75c900 RDI: 0000000000000009
RBP: 00007fe6db3f2380 R08: 0000000000000009 R09: 00007fe6db3f5a60
R10: 0000000000000063 R11: 0000000000000246 R12: 000055c9dd786cb0
R13: 0000000000000d68 R14: 00007fe6db3f1780 R15: 0000000000000d68