INFO: task syz-executor.1:22943 blocked for more than 143 seconds.
Not tainted 6.1.0-rc8-syzkaller-00018-g479174d402bc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23304 pid:22943 ppid:3660 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
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:2924 [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: 0033:0x7f6958a8c0d9
RSP: 002b:00007f69598b2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f6958babf80 RCX: 00007f6958a8c0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020004340
RBP: 00007f6958ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe632fb81f R14: 00007f69598b2300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d127330 (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: ffffffff8d127b30 (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: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/2996:
2 locks held by getty/3307:
#0: ffff8880176d5098 (&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 syz-executor.4/3676:
#0: ffff88802e9e20e0 (&type->s_umount_key#68){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
#1: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#1: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/0:17/4051:
#0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005cc7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
3 locks held by kworker/0:21/4056:
#0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005d07d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#2: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.5/25804:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller-00018-g479174d402bc #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25826 Comm: syz-executor.2 Not tainted 6.1.0-rc8-syzkaller-00018-g479174d402bc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:hlock_class kernel/locking/lockdep.c:227 [inline]
RIP: 0010:__lock_acquire+0xf9c/0x1f60 kernel/locking/lockdep.c:5051
Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 40 71 59 90 be 08 00 00 00 e8 4c 5e 74 00 48 0f a3 1d c4 08 ef 0e <0f> 82 ec 01 00 00 48 c7 c0 40 f0 d8 91 48 c1 e8 03 48 bf 00 00 00
RSP: 0018:ffffc90014bfee48 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000525 RCX: ffffffff816a6874
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff905971e0
RBP: ffff88807a3fc540 R08: dffffc0000000000 R09: fffffbfff20b2e3d
R10: fffffbfff20b2e3d R11: 1ffffffff20b2e3c R12: 1ffff1100f47f898
R13: 9c3d012ba0bc191e R14: ffff88807a3fc4c0 R15: 0000000000004000
FS: 00007f65c6e2e700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f65bd7fe000 CR3: 0000000027496000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5668
seqcount_lockdep_reader_access+0xfa/0x190 include/linux/seqlock.h:102
read_seqbegin include/linux/seqlock.h:836 [inline]
zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline]
page_outside_zone_boundaries mm/page_alloc.c:647 [inline]
bad_range+0x88/0x2e0 mm/page_alloc.c:674
rmqueue+0x1bde/0x1ed0 mm/page_alloc.c:3863
get_page_from_freelist+0x4b6/0x7c0 mm/page_alloc.c:4288
__alloc_pages+0x259/0x560 mm/page_alloc.c:5558
__folio_alloc+0xf/0x30 mm/page_alloc.c:5590
vma_alloc_folio+0x660/0xb60 mm/mempolicy.c:2246
shmem_alloc_folio mm/shmem.c:1561 [inline]
shmem_alloc_and_acct_folio+0x59b/0xd80 mm/shmem.c:1585
shmem_get_folio_gfp+0xd00/0x36e0 mm/shmem.c:1913
shmem_get_folio mm/shmem.c:2044 [inline]
shmem_write_begin+0x133/0x480 mm/shmem.c:2531
generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3753
__generic_file_write_iter+0x176/0x400 mm/filemap.c:3881
generic_file_write_iter+0xab/0x310 mm/filemap.c:3913
call_write_iter include/linux/fs.h:2199 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7dc/0xc50 fs/read_write.c:584
ksys_write+0x177/0x2a0 fs/read_write.c:637
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: 0033:0x7f65c603de5f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007f65c6e2df10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f65c603de5f
RDX: 0000000001000000 RSI: 00007f65bc7ff000 RDI: 0000000000000003
RBP: 00007f65bc7ff000 R08: 0000000000000000 R09: 0000000000005598
R10: 0000000001000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f65c6e2dfdc R14: 00007f65c6e2dfe0 R15: 0000000020005682