INFO: task kworker/u4:4:56 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:4 state:D stack:20408 pid:56 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
io_ring_exit_work+0x702/0x7f0 io_uring/io_uring.c:3027
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x2b2/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.4:18102 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24616 pid:18102 ppid:5016 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
xlog_grant_head_wait+0x387/0x910 fs/xfs/xfs_log.c:307
xlog_grant_head_check+0x299/0x480
xfs_log_reserve+0x3c4/0xb10 fs/xfs/xfs_log.c:486
xfs_trans_reserve+0x239/0x6a0 fs/xfs/xfs_trans.c:194
xfs_trans_alloc+0x423/0x810 fs/xfs/xfs_trans.c:283
xfs_trans_alloc_icreate+0xc9/0x2b0 fs/xfs/xfs_trans.c:1246
xfs_create+0x6c9/0x1240 fs/xfs/xfs_inode.c:1002
xfs_generic_create+0x491/0xd70 fs/xfs/xfs_iops.c:199
lookup_open fs/namei.c:3416 [inline]
open_last_lookups fs/namei.c:3484 [inline]
path_openat+0x13df/0x3170 fs/namei.c:3712
do_filp_open+0x234/0x490 fs/namei.c:3742
do_sys_openat2+0x13f/0x500 fs/open.c:1356
do_sys_open fs/open.c:1372 [inline]
__do_sys_open fs/open.c:1380 [inline]
__se_sys_open fs/open.c:1376 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1376
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: 0033:0x7fb8a908c169
RSP: 002b:00007fb8a9d42168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fb8a91abf80 RCX: 00007fb8a908c169
RDX: 0000000000000000 RSI: 0000000000060142 RDI: 0000000020000000
RBP: 00007fb8a90e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd31dcb78f R14: 00007fb8a9d42300 R15: 0000000000022000
INFO: task syz-executor.4:18183 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27992 pid:18183 ppid:5016 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:758 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x7ba/0x3170 fs/namei.c:3712
do_filp_open+0x234/0x490 fs/namei.c:3742
do_sys_openat2+0x13f/0x500 fs/open.c:1356
do_sys_open fs/open.c:1372 [inline]
__do_sys_open fs/open.c:1380 [inline]
__se_sys_open fs/open.c:1376 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1376
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: 0033:0x7fb8a908c169
RSP: 002b:00007fb8a9d21168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fb8a91ac050 RCX: 00007fb8a908c169
RDX: 0000000000000000 RSI: 0000000000145142 RDI: 0000000020007f80
RBP: 00007fb8a90e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd31dcb78f R14: 00007fb8a9d21300 R15: 0000000000022000
INFO: task syz-executor.4:18184 blocked for more than 145 seconds.
Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25704 pid:18184 ppid:5016 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:758 [inline]
vfs_fileattr_set+0x139/0xd40 fs/ioctl.c:681
ioctl_fssetxattr fs/ioctl.c:758 [inline]
do_vfs_ioctl+0x1860/0x2b10 fs/ioctl.c:845
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x81/0x160 fs/ioctl.c:856
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: 0033:0x7fb8a908c169
RSP: 002b:00007fb8a9d00168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb8a91ac120 RCX: 00007fb8a908c169
RDX: 0000000020000080 RSI: 00000000401c5820 RDI: 0000000000000008
RBP: 00007fb8a90e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd31dcb78f R14: 00007fb8a9d00300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/0:0/7:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc900000c7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
2 locks held by kworker/0:1/9:
#0: ffff8880b983be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539
#1: ffff8880b9828788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:976
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf256b0 (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: ffffffff8cf25a70 (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: ffffffff8cf254e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:4/56:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90001577d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
1 lock held by udevd/4430:
#0: ffff8880b983be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539
2 locks held by getty/4728:
#0: ffff88814a681098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/5026:
#0: ffffffff8cf2abb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8cf2abb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/u4:7/5302:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90005e57d20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
3 locks held by kworker/0:9/5446:
2 locks held by kworker/0:12/5593:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90008857d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
2 locks held by kworker/0:15/5743:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc9000ba07d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
2 locks held by kworker/u4:11/14369:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90005be7d20 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
3 locks held by syz-executor.4/18102:
#0: ffff88801e7f6460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: open_last_lookups fs/namei.c:3481 [inline]
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: path_openat+0x7ba/0x3170 fs/namei.c:3712
#2: ffff88801e7f6650 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_icreate+0xc9/0x2b0 fs/xfs/xfs_trans.c:1246
2 locks held by syz-executor.4/18183:
#0: ffff88801e7f6460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: open_last_lookups fs/namei.c:3481 [inline]
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: path_openat+0x7ba/0x3170 fs/namei.c:3712
2 locks held by syz-executor.4/18184:
#0: ffff88801e7f6460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x1f0 fs/namespace.c:438
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff8880729629f8 (&inode->i_sb->s_type->i_mutex_dir_key#2){++++}-{3:3}, at: vfs_fileattr_set+0x139/0xd40 fs/ioctl.c:681
2 locks held by syz-executor.2/21050:
#0: ffff88807cf140e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
#1: ffffffff8cf2abb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#1: ffffffff8cf2abb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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+0x2b2/0x350 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: 20127 Comm: udevd Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:copy_from_kernel_nofault+0xe3/0x2d0 mm/maccess.c:37
Code: c3 08 eb bc e8 ee e6 ce ff 48 c7 c3 de ff ff ff e9 61 01 00 00 e8 dd e6 ce ff eb 09 e8 d6 e6 ce ff 49 83 c4 08 bf 03 00 00 00 <4c> 89 ee e8 05 eb ce ff 49 83 fd 03 76 5a 4c 89 f5 4c 89 fb 49 83
RSP: 0018:ffffc9001896f388 EFLAGS: 00000293
RAX: ffffffff81bbb423 RBX: 0000000000000ff9 RCX: ffff8880793bba80
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: ffff88802aabe900 R08: ffffffff81bbb3c0 R09: fffffbfff205bc40
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801bf5ec30
R13: 0000000000000004 R14: ffff8880793bd148 R15: ffff888090c7aff9
FS: 00007efe41490c80(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f2ee673 CR3: 0000000029966000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
prepend_copy fs/d_path.c:49 [inline]
prepend fs/d_path.c:75 [inline]
prepend_name fs/d_path.c:100 [inline]
__prepend_path fs/d_path.c:132 [inline]
prepend_path+0x4d4/0xb70 fs/d_path.c:171
d_absolute_path+0x179/0x300 fs/d_path.c:233
tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
tomoyo_realpath_from_path+0x2ae/0x5e0 security/tomoyo/realpath.c:271
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x254/0x4e0 security/tomoyo/file.c:771
security_file_open+0x63/0xa0 security/security.c:2797
do_dentry_open+0x308/0x10f0 fs/open.c:907
do_open fs/namei.c:3560 [inline]
path_openat+0x27b3/0x3170 fs/namei.c:3715
do_filp_open+0x234/0x490 fs/namei.c:3742
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: 0033:0x7efe411169a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff421f0140 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007efe411169a4
RDX: 0000000000080000 RSI: 00007fff421f0278 RDI: 00000000ffffff9c
RBP: 00007fff421f0278 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 000055dd21986b42 R14: 0000000000000001 R15: 000055dd219a2160