INFO: task syz-executor.0:5008 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:19256 pid:5008 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:475
fuse_lookup+0x115/0x600 fs/fuse/dir.c:432
__lookup_slow+0x282/0x3e0 fs/namei.c:1690
lookup_slow+0x53/0x70 fs/namei.c:1707
walk_component fs/namei.c:1998 [inline]
link_path_walk+0x9c8/0xe70 fs/namei.c:2325
path_openat+0x241/0x3170 fs/namei.c:3787
do_filp_open+0x234/0x490 fs/namei.c:3818
do_sys_openat2+0x13f/0x500 fs/open.c:1356
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1383
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: 0033:0x7f9cc368be98
RSP: 002b:00007ffc034fd940 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9cc368be98
RDX: 0000000000090800 RSI: 00007f9cc36d64df RDI: 00000000ffffff9c
RBP: 00007ffc034fda0c R08: 0000000000090800 R09: 00007f9cc36d64df
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000012ec4 R14: 0000000000000008 R15: 00007ffc034fda70
INFO: task syz-executor.0:5025 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24544 pid:5025 ppid:5008 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1192/0x1b80 fs/fuse/dev.c:513
fuse_lookup_name+0x332/0x830 fs/fuse/dir.c:392
fuse_lookup+0x182/0x600 fs/fuse/dir.c:433
__lookup_slow+0x282/0x3e0 fs/namei.c:1690
lookup_slow+0x53/0x70 fs/namei.c:1707
walk_component fs/namei.c:1998 [inline]
link_path_walk+0x9c8/0xe70 fs/namei.c:2325
path_openat+0x241/0x3170 fs/namei.c:3787
do_filp_open+0x234/0x490 fs/namei.c:3818
do_sys_openat2+0x13f/0x500 fs/open.c:1356
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1383
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: 0033:0x7f9cc363e404
RSP: 002b:00007f9cc4433ec0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f9cc363e404
RDX: 0000000000000002 RSI: 00007f9cc4433fe0 RDI: 00000000ffffff9c
RBP: 00007f9cc4433fe0 R08: 0000000000000000 R09: 00000000000010f7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007f9cc4433fdc R14: 00007f9cc4433fe0 R15: 0000000020001142
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4749:
#0: ffff8880288e4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
2 locks held by syz-executor.0/5008:
#0: ffff888068c20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#0: ffff888068c20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1706
#1: ffff888068c205b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:475
2 locks held by syz-executor.0/5025:
#0: ffff888068c20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#0: ffff888068c20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1706
#1: ffff888068c205b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:475
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: kworker/u4:0 Not tainted 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:insn_get_sib arch/x86/lib/insn.c:420 [inline]
RIP: 0010:insn_get_displacement+0xd1/0x980 arch/x86/lib/insn.c:464
Code: 00 00 4c 89 64 24 20 49 8d 5d 24 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 e9 06 00 00 0f b6 1b 31 ff 89 de e8 af ab dd f6 <85> db 74 61 e8 16 a9 dd f6 49 8d 5d 25 48 89 d8 48 c1 e8 03 0f b6
RSP: 0018:ffffc900000f7860 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888014a59dc0
RDX: ffff888014a59dc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8aaddbe1 R09: 0000000000000000
R10: ffffc900000f79c0 R11: dffffc0000000001 R12: ffffc900000f79ec
R13: ffffc900000f79c0 R14: ffffc900000f79f4 R15: 1ffff9200001ef3e
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ba76103028 CR3: 000000000cd30000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
insn_get_immediate+0x382/0x13d0 arch/x86/lib/insn.c:632
insn_get_length arch/x86/lib/insn.c:707 [inline]
insn_decode+0x370/0x500 arch/x86/lib/insn.c:747
arch_jump_entry_size arch/x86/kernel/jump_label.c:24 [inline]
__jump_label_patch+0xe8/0x440 arch/x86/kernel/jump_label.c:45
arch_jump_label_transform_queue+0x4e/0xd0 arch/x86/kernel/jump_label.c:137
__jump_label_update+0x177/0x3a0 kernel/jump_label.c:475
static_key_disable_cpuslocked+0xce/0x1b0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:836
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308