INFO: task syz-executor.0:5376 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24416 pid:5376 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
rwsem_down_read_slowpath+0x625/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x470 kernel/locking/rwsem.c:1522
inode_lock_shared include/linux/fs.h:781 [inline]
lookup_slow fs/namei.c:1706 [inline]
walk_component+0x33b/0x5a0 fs/namei.c:1998
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2325
link_path_walk fs/namei.c:2250 [inline]
path_openat+0x231/0x29c0 fs/namei.c:3789
do_filp_open+0x1de/0x430 fs/namei.c:3820
do_sys_openat2+0x176/0x1e0 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+0x175/0x210 fs/open.c:1433
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc70a27b841
RSP: 002b:00007fff9d755be0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc70a27b841
RDX: 0000000000090800 RSI: 00007fc70a2d7b46 RDI: 00000000ffffff9c
RBP: 00007fff9d755cac R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000010c99 R14: 0000000000010952 R15: 0000000000000009
INFO: task syz-executor.0:5453 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26752 pid:5453 ppid:5376 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
request_wait_answer+0x4f4/0x8f0 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x504/0xd10 fs/fuse/dev.c:513
fuse_lookup_name+0x1df/0x580 fs/fuse/dir.c:392
fuse_lookup+0x1ad/0x430 fs/fuse/dir.c:431
__lookup_slow+0x24d/0x450 fs/namei.c:1690
lookup_slow fs/namei.c:1707 [inline]
walk_component+0x349/0x5a0 fs/namei.c:1998
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2325
link_path_walk fs/namei.c:2250 [inline]
path_openat+0x231/0x29c0 fs/namei.c:3789
do_filp_open+0x1de/0x430 fs/namei.c:3820
do_sys_openat2+0x176/0x1e0 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+0x175/0x210 fs/open.c:1433
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc70a27aa90
RSP: 002b:00007fc70b08fc00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000004000 RCX: 00007fc70a27aa90
RDX: 0000000000004000 RSI: 00007fc70b08fca0 RDI: 00000000ffffff9c
RBP: 00007fc70b08fca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc70a39bf80 R15: 00007fff9d755938
INFO: task syz-executor.0:5458 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27776 pid:5458 ppid:5376 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
rwsem_down_write_slowpath+0x53e/0x1290 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+0x1d7/0x200 kernel/locking/rwsem.c:1690
inode_lock_nested include/linux/fs.h:806 [inline]
fuse_reverse_inval_entry+0x59/0x580 fs/fuse/dir.c:1250
fuse_notify_delete fs/fuse/dev.c:1552 [inline]
fuse_notify fs/fuse/dev.c:1801 [inline]
fuse_dev_do_write+0xe94/0x2c90 fs/fuse/dev.c:1876
fuse_dev_write+0x154/0x1e0 fs/fuse/dev.c:1960
call_write_iter include/linux/fs.h:1877 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x650/0xe40 fs/read_write.c:584
ksys_write+0x12f/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc70a27bdb9
RSP: 002b:00007fc70b06f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc70a39c050 RCX: 00007fc70a27bdb9
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fc70a2d8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc70a39c050 R15: 00007fff9d755938
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a67f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a64f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/27:
#0: ffffffff8c9a7400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4772:
#0: ffff888028a06098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
1 lock held by syz-executor.0/5376:
#0: ffff888073a08150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
#0: ffff888073a08150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1706 [inline]
#0: ffff888073a08150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:1998
2 locks held by syz-executor.0/5453:
#0: ffff888073a08150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
#0: ffff888073a08150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1706 [inline]
#0: ffff888073a08150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:1998
#1: ffff888073a085b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
2 locks held by syz-executor.0/5458:
#0: ffff88802c554b38 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1551 [inline]
#0: ffff88802c554b38 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify fs/fuse/dev.c:1801 [inline]
#0: ffff88802c554b38 (&fc->killsb){.+.+}-{3:3}, at: fuse_dev_do_write+0xe74/0x2c90 fs/fuse/dev.c:1876
#1: ffff888073a08150 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:806 [inline]
#1: ffff888073a08150 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x59/0x580 fs/fuse/dir.c:1250
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2ac/0x310 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+0xf29/0x11b0 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10 Comm: kworker/u4:0 Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:pud_alloc include/linux/mm.h:2759 [inline]
RIP: 0010:walk_to_pmd+0x75/0x2a0 mm/memory.c:1799
Code: 0f 84 60 01 00 00 e8 ba 5f c0 ff 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f4 01 00 00 49 8b 1c 24 <31> ff 49 89 de 49 83 e6 9f 4c 89 f6 e8 1a 5b c0 ff 4d 85 f6 0f 84
RSP: 0018:ffffc900000f7960 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000012864067 RCX: 0000000000000000
RDX: 1ffff1100250c655 RSI: ffffffff81c5a926 RDI: ffff8880128680c0
RBP: 00002aaaaaaab000 R08: 0000000000000000 R09: fffff9400000ecf0
R10: ffffea0000076787 R11: 0000000000000000 R12: ffff8880128632a8
R13: ffff888012868000 R14: ffffc900000f7a28 R15: ffffea0000076780
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c35cda9600 CR3: 000000000c776000 CR4: 0000000000350ee0
Call Trace:
__get_locked_pte+0x25/0xc0 mm/memory.c:1813
get_locked_pte include/linux/mm.h:2642 [inline]
__text_poke+0x1be/0x8a0 arch/x86/kernel/alternative.c:1811
text_poke arch/x86/kernel/alternative.c:1896 [inline]
text_poke_bp_batch+0x507/0x780 arch/x86/kernel/alternative.c:2285
text_poke_flush arch/x86/kernel/alternative.c:2398 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2395 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2405
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32e/0x410 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:831 [inline]
toggle_allocation_gate+0xf4/0x250 mm/kfence/core.c:823
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304