INFO: task syz-executor.0:5525 blocked for more than 143 seconds.
Not tainted 6.11.0-next-20240920-syzkaller-12481-g62f92d634458 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20608 pid:5525 tgid:5525 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6674
__schedule_loop kernel/sched/core.c:6751 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6766
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6823
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
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+0x278/0x3b40 fs/namei.c:3938
do_filp_open+0x235/0x490 fs/namei.c:3969
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: 0033:0x7f960e07a7c1
RSP: 002b:00007ffc4c13cc70 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f960e07a7c1
RDX: 0000000000090800 RSI: 00007f960e0d660e RDI: 00000000ffffff9c
RBP: 00007ffc4c13cd3c R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000015efc R14: 0000000000015bc5 R15: 0000000000000009
INFO: task syz-executor.0:5582 blocked for more than 143 seconds.
Not tainted 6.11.0-next-20240920-syzkaller-12481-g62f92d634458 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22744 pid:5582 tgid:5581 ppid:5525 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6674
__schedule_loop kernel/sched/core.c:6751 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6766
request_wait_answer fs/fuse/dev.c:464 [inline]
__fuse_request_send fs/fuse/dev.c:478 [inline]
fuse_simple_request+0xe35/0x1860 fs/fuse/dev.c:572
fuse_lookup_name+0x331/0x880 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:429
__lookup_slow+0x28c/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+0x278/0x3b40 fs/namei.c:3938
do_filp_open+0x235/0x490 fs/namei.c:3969
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: 0033:0x7f960e07ad39
RSP: 002b:00007f960f2810c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f960e19bf80 RCX: 00007f960e07ad39
RDX: 0000000000000042 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007f960e0d7567 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f960e19bf80 R15: 00007ffc4c13c998
INFO: task syz-executor.0:5586 blocked for more than 143 seconds.
Not tainted 6.11.0-next-20240920-syzkaller-12481-g62f92d634458 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26424 pid:5586 tgid:5581 ppid:5525 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6674
__schedule_loop kernel/sched/core.c:6751 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6766
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6823
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:850 [inline]
fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1372
fuse_notify_delete fs/fuse/dev.c:1599 [inline]
fuse_notify fs/fuse/dev.c:1913 [inline]
fuse_dev_do_write+0x4081/0x5dd0 fs/fuse/dev.c:1991
fuse_dev_write+0x148/0x1d0 fs/fuse/dev.c:2075
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xa6d/0xc90 fs/read_write.c:683
ksys_write+0x183/0x2b0 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: 0033:0x7f960e07ad39
RSP: 002b:00007f960f2600c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f960e19c050 RCX: 00007f960e07ad39
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f960e0d7567 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f960e19c050 R15: 00007ffc4c13c998
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
2 locks held by getty/4985:
#0: ffff88814bfdf0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5525:
#0: ffff8880744a8148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:825 [inline]
#0: ffff8880744a8148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1748
2 locks held by syz-executor.0/5582:
#0: ffff8880744a8148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:825 [inline]
#0: ffff8880744a8148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1748
#1: ffff8880744a8610 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:554
2 locks held by syz-executor.0/5586:
#0: ffff8880781e9338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1598 [inline]
#0: ffff8880781e9338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify fs/fuse/dev.c:1913 [inline]
#0: ffff8880781e9338 (&fc->killsb){.+.+}-{3:3}, at: fuse_dev_do_write+0x401f/0x5dd0 fs/fuse/dev.c:1991
#1: ffff8880744a8148 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff8880744a8148 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1372
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-next-20240920-syzkaller-12481-g62f92d634458 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.11.0-next-20240920-syzkaller-12481-g62f92d634458 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x90 kernel/kcov.c:320
Code: 10 48 89 74 0a 18 4c 89 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 c0 d7 03 00 65 8b 05 30 eb
RSP: 0018:ffffc90000117638 EFLAGS: 00000046
RAX: ffffffff8142ee89 RBX: 0000000000000000 RCX: 000000000000002e
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000117730 R08: ffffffff8142ee7a R09: fffff52000022f38
R10: dffffc0000000000 R11: fffff52000022f38 R12: 0000000000000000
R13: 0000000015878000 R14: 0000000015878000 R15: 000000000000002e
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c9c7049680 CR3: 0000000015878000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
phys_addr_valid arch/x86/mm/physaddr.h:7 [inline]
__phys_addr+0xac/0x170 arch/x86/mm/physaddr.c:28
build_cr3 arch/x86/mm/tlb.c:158 [inline]
switch_mm_irqs_off+0x12c/0xb00 arch/x86/mm/tlb.c:524
unuse_temporary_mm arch/x86/kernel/alternative.c:1831 [inline]
__text_poke+0x8f0/0xd30 arch/x86/kernel/alternative.c:1941
text_poke arch/x86/kernel/alternative.c:1984 [inline]
text_poke_bp_batch+0x265/0xb30 arch/x86/kernel/alternative.c:2292
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_disable_cpuslocked+0xd2/0x1c0 kernel/jump_label.c:240
static_key_disable+0x1a/0x20 kernel/jump_label.c:248
toggle_allocation_gate+0x1bf/0x260 mm/kfence/core.c:854
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244