INFO: task syz-executor.5:5048 blocked for more than 143 seconds.
Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24456 pid:5048 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
fuse_lookup.part.0+0x86/0x390 fs/fuse/dir.c:432
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1690
lookup_slow fs/namei.c:1707 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1998
link_path_walk.part.0+0x74e/0xd60 fs/namei.c:2325
link_path_walk fs/namei.c:2250 [inline]
path_openat+0x262/0x2710 fs/namei.c:3789
do_filp_open+0x1ba/0x410 fs/namei.c:3820
do_sys_openat2+0x160/0x1c0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_sys_openat fs/open.c:1438 [inline]
__se_sys_openat fs/open.c:1433 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1433
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdfba48be98
RSP: 002b:00007ffd515e6e30 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000000000000081a RCX: 00007fdfba48be98
RDX: 0000000000090800 RSI: 00007fdfba4d64df RDI: 00000000ffffff9c
RBP: 00007ffd515e6efc R08: 0000000000090800 R09: 00007fdfba4d64df
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000a7060 R14: 0000000000000009 R15: 00007ffd515e6f60
</TASK>
INFO: task syz-executor.5:19320 blocked for more than 143 seconds.
Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27200 pid:19320 ppid:5048 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
request_wait_answer+0x46d/0x850 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x504/0xd80 fs/fuse/dev.c:513
fuse_lookup_name+0x27a/0x620 fs/fuse/dir.c:392
fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:433
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1690
lookup_slow fs/namei.c:1707 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1998
link_path_walk.part.0+0x74e/0xd60 fs/namei.c:2325
link_path_walk fs/namei.c:2250 [inline]
path_openat+0x262/0x2710 fs/namei.c:3789
do_filp_open+0x1ba/0x410 fs/namei.c:3820
do_sys_openat2+0x160/0x1c0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_sys_openat fs/open.c:1438 [inline]
__se_sys_openat fs/open.c:1433 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1433
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdfba48c389
RSP: 002b:00007fdfbb233168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fdfba5ac120 RCX: 00007fdfba48c389
RDX: 0000000000000042 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007fdfba4d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd515e6c3f R14: 00007fdfbb233300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a3af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a37f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a4700 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4771:
#0: ffff888028b8e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf08/0x13f0 drivers/tty/n_tty.c:2187
2 locks held by syz-executor.5/5048:
#0: ffff888038049c50 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
#0: ffff888038049c50 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: lookup_slow fs/namei.c:1706 [inline]
#0: ffff888038049c50 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1998
#1: ffff88803804a0b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
2 locks held by syz-executor.5/19320:
#0: ffff888038049c50 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
#0: ffff888038049c50 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: lookup_slow fs/namei.c:1706 [inline]
#0: ffff888038049c50 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1998
#1: ffff88803804a0b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4463 Comm: klogd Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:207
Code: b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 bd d7 7e 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 80 b9 03 00 a9 00 01 ff 00 74 0e
RSP: 0018:ffffc9000306fa08 EFLAGS: 00000212
RAX: 0000000080000000 RBX: 0000000000000058 RCX: 0000000080000000
RDX: ffff88807e65d940 RSI: ffffffff81693675 RDI: 0000000000000005
RBP: 00000000000b15b0 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000060 R11: 0000001c82000056 R12: ffffffff92149790
R13: 00000000000b1550 R14: ffffc9000306faf8 R15: ffffffff92149798
FS: 00007fc5954db380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe042e44d40 CR3: 0000000027a9e000 CR4: 0000000000350ee0
Call Trace:
<NMI>
</NMI>
<TASK>
get_data+0x3c5/0x5d0 kernel/printk/printk_ringbuffer.c:1251
copy_data kernel/printk/printk_ringbuffer.c:1716 [inline]
prb_read kernel/printk/printk_ringbuffer.c:1825 [inline]
_prb_read_valid+0x31d/0x6e0 kernel/printk/printk_ringbuffer.c:1891
prb_read_valid+0x79/0xa0 kernel/printk/printk_ringbuffer.c:1940
syslog_print+0x3f0/0x580 kernel/printk/printk.c:1596
do_syslog.part.0+0x1f2/0x570 kernel/printk/printk.c:1732
do_syslog kernel/printk/printk.c:1822 [inline]
__do_sys_syslog kernel/printk/printk.c:1824 [inline]
__se_sys_syslog kernel/printk/printk.c:1822 [inline]
__x64_sys_syslog+0x9b/0xd0 kernel/printk/printk.c:1822
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc59563cfa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdc2199f68 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007fc5957db4a0 RCX: 00007fc59563cfa7
RDX: 00000000000003ff RSI: 00007fc5957db4a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 08c70f2196dd59cf
R10: 0000000000004000 R11: 0000000000000206 R12: 00007fc5957db4a0
R13: 00007fc5957cb212 R14: 00007fc5957db51e R15: 00007fc5957db51e
</TASK>