INFO: task syz-executor.0:5522 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20992 pid:5522 tgid:5522 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5264 [inline]
__schedule+0x1893/0x4b50 kernel/sched/core.c:6607
__schedule_loop kernel/sched/core.c:6684 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6699
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6756
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:825 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1748
walk_component fs/namei.c:2053 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2418
path_openat+0x266/0x3590 fs/namei.c:3929
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_openat fs/open.c:1446 [inline]
__se_sys_openat fs/open.c:1441 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe640c7b841
RSP: 002b:00007ffd5ce5fd00 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe640c7b841
RDX: 0000000000090800 RSI: 00007fe640cd7b46 RDI: 00000000ffffff9c
RBP: 00007ffd5ce5fdcc R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000015549 R14: 0000000000015201 R15: 0000000000000009
INFO: task syz-executor.0:5581 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23168 pid:5581 tgid:5580 ppid:5522 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5264 [inline]
__schedule+0x1893/0x4b50 kernel/sched/core.c:6607
__schedule_loop kernel/sched/core.c:6684 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6699
request_wait_answer fs/fuse/dev.c:409 [inline]
__fuse_request_send fs/fuse/dev.c:428 [inline]
fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:515
fuse_lookup_name+0x32e/0x890 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:429
__lookup_slow+0x28e/0x3f0 fs/namei.c:1732
lookup_slow+0x53/0x70 fs/namei.c:1749
walk_component fs/namei.c:2053 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2418
path_openat+0x266/0x3590 fs/namei.c:3929
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_openat fs/open.c:1446 [inline]
__se_sys_openat fs/open.c:1441 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe640c7aa90
RSP: 002b:00007fe641a2bc00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000004000 RCX: 00007fe640c7aa90
RDX: 0000000000004000 RSI: 00007fe641a2bca0 RDI: 00000000ffffff9c
RBP: 00007fe641a2bca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe640d9bf80 R15: 00007ffd5ce5fa58
INFO: task syz-executor.0:5585 blocked for more than 144 seconds.
Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25792 pid:5585 tgid:5580 ppid:5522 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5264 [inline]
__schedule+0x1893/0x4b50 kernel/sched/core.c:6607
__schedule_loop kernel/sched/core.c:6684 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6699
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6756
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:850 [inline]
fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1360
fuse_notify_delete fs/fuse/dev.c:1551 [inline]
fuse_notify fs/fuse/dev.c:1865 [inline]
fuse_dev_do_write+0x40b8/0x6210 fs/fuse/dev.c:1943
fuse_dev_write+0x148/0x1d0 fs/fuse/dev.c:2027
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xa6f/0xc90 fs/read_write.c:683
ksys_write+0x1a0/0x2c0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe640c7bdb9
RSP: 002b:00007fe641a0b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe640d9c050 RCX: 00007fe640c7bdb9
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fe640cd8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe640d9c050 R15: 00007ffd5ce5fa58
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701
2 locks held by getty/4970:
#0: ffff88802e6990a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5522:
#0: ffff888072c70148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:825 [inline]
#0: ffff888072c70148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1748
2 locks held by syz-executor.0/5581:
#0: ffff888072c70148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:825 [inline]
#0: ffff888072c70148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1748
#1: ffff888072c70610 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:554
2 locks held by syz-executor.0/5585:
#0: ffff88807da51338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1550 [inline]
#0: ffff88807da51338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify fs/fuse/dev.c:1865 [inline]
#0: ffff88807da51338 (&fc->killsb){.+.+}-{3:3}, at: fuse_dev_do_write+0x4056/0x6210 fs/fuse/dev.c:1943
#1: ffff888072c70148 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff888072c70148 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1360
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__rcu_read_unlock+0x4/0x110 kernel/rcu/tree_plugin.h:430
Code: 80 e1 07 80 c1 03 38 c1 7c aa 4c 89 ff e8 c4 c5 80 00 eb a0 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 41 57 41 56 41 55 41 54 53 49 bc 00 00 00 00 00 fc ff df 65 4c
RSP: 0018:ffffc90000117738 EFLAGS: 00000246
RAX: 8f081d4c7039a200 RBX: 0000000000000001 RCX: ffffc90000117603
RDX: 0000000000000005 RSI: ffffffff8c0ae940 RDI: ffffffff8c60e0c0
RBP: ffffc90000117910 R08: ffffffff901c582f R09: 1ffffffff2038b05
R10: dffffc0000000000 R11: fffffbfff2038b06 R12: 1ffff92000022ef8
R13: dffffc0000000000 R14: 0000000000000046 R15: ffffffff81f07e19
FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561d9330b028 CR3: 000000000e734000 CR4: 0000000000350ef0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:882 [inline]
pte_unmap include/linux/pgtable.h:115 [inline]
__text_poke+0xafd/0xd30 arch/x86/kernel/alternative.c:1960
text_poke arch/x86/kernel/alternative.c:1984 [inline]
text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2373
text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:833
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244