INFO: task syz.3.558:7984 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.558 state:D stack:23208 pid:7984 tgid:7981 ppid:5825 task_flags:0x440140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5258 [inline]
__schedule+0x150e/0x5070 kernel/sched/core.c:6866
__schedule_loop kernel/sched/core.c:6948 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6963
xlog_grant_head_wait+0x443/0x9e0 fs/xfs/xfs_log.c:217
xlog_grant_head_check+0x286/0x420 fs/xfs/xfs_log.c:-1
xfs_log_reserve+0x2bc/0x740 fs/xfs/xfs_log.c:387
xfs_trans_reserve fs/xfs/xfs_trans.c:176 [inline]
xfs_trans_alloc+0x29c/0x960 fs/xfs/xfs_trans.c:258
xfs_trans_alloc_inode+0x13c/0x4a0 fs/xfs/xfs_trans.c:1076
xfs_attr_set+0x7fa/0x1210 fs/xfs/libxfs/xfs_attr.c:1098
xfs_xattr_set+0x14d/0x250 fs/xfs/xfs_xattr.c:186
__vfs_setxattr+0x43c/0x480 fs/xattr.c:200
__vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
vfs_setxattr+0x162/0x360 fs/xattr.c:321
do_setxattr fs/xattr.c:636 [inline]
filename_setxattr+0x274/0x600 fs/xattr.c:665
path_setxattrat+0x364/0x3a0 fs/xattr.c:713
__do_sys_lsetxattr fs/xattr.c:754 [inline]
__se_sys_lsetxattr fs/xattr.c:750 [inline]
__x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:750
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f770818f749
RSP: 002b:00007f77063d5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f77083e6090 RCX: 00007f770818f749
RDX: 0000200000000040 RSI: 00002000000000c0 RDI: 0000200000000100
RBP: 00007f7708213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f77083e6128 R14: 00007f77083e6090 R15: 00007ffe0ec155b8
INFO: task syz.3.558:8014 blocked for more than 144 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.558 state:D stack:27272 pid:8014 tgid:7981 ppid:5825 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5258 [inline]
__schedule+0x150e/0x5070 kernel/sched/core.c:6866
__schedule_loop kernel/sched/core.c:6948 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6963
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7020
rwsem_down_write_slowpath+0x872/0xfe0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
inode_lock include/linux/fs.h:1028 [inline]
process_measurement+0x3d8/0x1a70 security/integrity/ima/ima_main.c:281
ima_file_check+0xd9/0x130 security/integrity/ima/ima_main.c:663
security_file_post_open+0xbb/0x290 security/security.c:2652
do_open fs/namei.c:4629 [inline]
path_openat+0x2e25/0x3840 fs/namei.c:4786
do_filp_open+0x1fa/0x410 fs/namei.c:4813
do_sys_openat2+0x121/0x200 fs/open.c:1391
do_sys_open fs/open.c:1397 [inline]
__do_sys_creat fs/open.c:1475 [inline]
__se_sys_creat fs/open.c:1469 [inline]
__x64_sys_creat+0x8f/0xc0 fs/open.c:1469
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f770818f749
RSP: 002b:00007f77063b4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f77083e6180 RCX: 00007f770818f749
RDX: 0000000000000000 RSI: 0000000000000130 RDI: 0000200000000080
RBP: 00007f7708213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f77083e6218 R14: 00007f77083e6180 R15: 00007ffe0ec155b8
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e13f2e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13f2e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e13f2e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5585:
#0: ffff888034e7f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
2 locks held by kworker/u8:20/7428:
3 locks held by kworker/u8:21/7484:
#0: ffff88801dea5948 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3254
#1: ffffc9001bf87b80 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3255
#2: ffff888142f80198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
#2: ffff888142f80198 (&dev->mutex){....}-{4:4}, at: usb_remote_wakeup+0x23/0x130 drivers/usb/core/hub.c:3886
2 locks held by kworker/0:11/7486:
#0: ffff888030564948 ((wq_completion)xfs-sync/loop3){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3254
#1: ffffc9000401fb80 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3255
3 locks held by syz.3.558/7984:
#0: ffff888031b8a420 (sb_writers#20){++++}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:499
#1: ffff888054c228b0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
#1: ffff888054c228b0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: vfs_setxattr+0x13d/0x360 fs/xattr.c:320
#2: ffff888031b8a610 (sb_internal#4){++++}-{0:0}, at: xfs_trans_alloc+0xd7/0x960 fs/xfs/xfs_trans.c:256
2 locks held by syz.3.558/8014:
#0: ffff888031b8a420 (sb_writers#20){++++}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:499
#1: ffff888054c228b0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
#1: ffff888054c228b0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: process_measurement+0x3d8/0x1a70 security/integrity/ima/ima_main.c:281
1 lock held by syz.3.1155/10696:
#0: ffffffff8e144d00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570 kernel/rcu/tree.c:3816
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:363 [inline]
watchdog+0xe40/0xe90 kernel/hung_task.c:557
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5812 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:check_preemption_disabled+0x40/0x120 lib/smp_processor_id.c:53
Code: 08 65 8b 05 c6 e1 41 07 65 8b 0d bb e1 41 07 f7 c1 ff ff ff 7f 74 23 65 48 8b 0d 9b e1 41 07 48 3b 4c 24 08 0f 85 cc 00 00 00 <48> 83 c4 10 5b 41 5e 41 5f 5d e9 81 cd 02 00 cc 48 c7 04 24 00 00
RSP: 0018:ffffc900040ff828 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 52b00c0352420c00
RDX: ffff88801da85b80 RSI: ffffffff8be07940 RDI: ffffffff8be07900
RBP: ffffc900040ff8f8 R08: ffff888030d0db87 R09: 1ffff110061a1b70
R10: dffffc0000000000 R11: ffffed10061a1b71 R12: dffffc0000000000
R13: dffffc0000000000 R14: 1ffff9200081ff10 R15: dffffc0000000000
FS: 0000555590fd8500(0000) GS:ffff888125d25000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f98035b6ad8 CR3: 000000007533a000 CR4: 00000000003526f0
Call Trace:
rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751
rcu_read_lock_held_common kernel/rcu/update.c:109 [inline]
rcu_read_lock_sched_held+0x6b/0x100 kernel/rcu/update.c:124
task_css_set include/linux/cgroup.h:447 [inline]
task_dfl_cgroup include/linux/cgroup.h:516 [inline]
task_psi_group+0x50/0x1a0 kernel/sched/psi.c:889
psi_account_irqtime+0x168/0x750 kernel/sched/psi.c:1021
__schedule+0x8c3/0x5070 kernel/sched/core.c:6859
__schedule_loop kernel/sched/core.c:6948 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6963
do_nanosleep+0x1c5/0x610 kernel/time/hrtimer.c:2116
hrtimer_nanosleep+0x169/0x360 kernel/time/hrtimer.c:2163
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1398 [inline]
__se_sys_clock_nanosleep+0x339/0x390 kernel/time/posix-timers.c:1375
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac491c1fc3
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 9e 95 1f 00 00 74 14 b8 e6 00 00 00 0f 05 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007fff20899ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fac491c1fc3
RDX: 00007fff20899f00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 7fffffffffffffff R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff2089a350
R13: 0000000000000004 R14: 00007fff20899f3c R15: 00007fff20899fd0