INFO: task syz.0.1281:12264 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1281 state:D stack:23824 pid:12264 tgid:12263 ppid:6511 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x184c/0x4bd0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x147/0x320 kernel/sched/core.c:6848
mb_cache_entry_wait_unused+0x162/0x250 fs/mbcache.c:148
ext4_evict_ea_inode+0x146/0x2f0 fs/ext4/xattr.c:480
ext4_evict_inode+0x190/0xf40 fs/ext4/inode.c:185
evict+0x4e4/0x990 fs/inode.c:796
ext4_xattr_ibody_set+0x58c/0x720 fs/ext4/xattr.c:2287
ext4_xattr_set_handle+0xceb/0x1770 fs/ext4/xattr.c:2446
ext4_xattr_set+0x27c/0x3e0 fs/ext4/xattr.c:2560
__vfs_setxattr+0x464/0x4a0 fs/xattr.c:200
__vfs_setxattr_noperm+0x12a/0x660 fs/xattr.c:234
vfs_setxattr+0x21d/0x420 fs/xattr.c:321
do_setxattr fs/xattr.c:636 [inline]
filename_setxattr+0x2ab/0x430 fs/xattr.c:665
path_setxattrat+0x43c/0x510 fs/xattr.c:713
__do_sys_setxattr fs/xattr.c:747 [inline]
__se_sys_setxattr fs/xattr.c:743 [inline]
__x64_sys_setxattr+0xb8/0xd0 fs/xattr.c:743
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f517b17e819
RSP: 002b:00007f517bfba038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f517b335fa0 RCX: 00007f517b17e819
RDX: 0000000020001400 RSI: 00000000200001c0 RDI: 00000000200003c0
RBP: 00007f517b1f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000835 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f517b335fa0 R15: 00007fff609e05f8
INFO: task syz.0.1281:12274 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1281 state:D stack:26504 pid:12274 tgid:12263 ppid:6511 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x184c/0x4bd0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x147/0x320 kernel/sched/core.c:6848
__wait_on_freeing_inode+0x1c3/0x2e0 fs/inode.c:2503
find_inode_fast+0x2ab/0x480 fs/inode.c:1104
iget_locked+0x92/0x5a0 fs/inode.c:1476
__ext4_iget+0x260/0x3f50 fs/ext4/inode.c:4760
ext4_xattr_inode_cache_find fs/ext4/xattr.c:1548 [inline]
ext4_xattr_inode_lookup_create+0x511/0x2020 fs/ext4/xattr.c:1587
ext4_xattr_ibody_set+0x210/0x720 fs/ext4/xattr.c:2269
ext4_xattr_set_handle+0xceb/0x1770 fs/ext4/xattr.c:2446
ext4_xattr_set+0x27c/0x3e0 fs/ext4/xattr.c:2560
__vfs_setxattr+0x464/0x4a0 fs/xattr.c:200
__vfs_setxattr_noperm+0x12a/0x660 fs/xattr.c:234
vfs_setxattr+0x21d/0x420 fs/xattr.c:321
do_setxattr fs/xattr.c:636 [inline]
filename_setxattr+0x2ab/0x430 fs/xattr.c:665
path_setxattrat+0x43c/0x510 fs/xattr.c:713
__do_sys_setxattr fs/xattr.c:747 [inline]
__se_sys_setxattr fs/xattr.c:743 [inline]
__x64_sys_setxattr+0xb8/0xd0 fs/xattr.c:743
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f517b17e819
RSP: 002b:00007f517bf99038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f517b336080 RCX: 00007f517b17e819
RDX: 0000000020001400 RSI: 00000000200001c0 RDI: 0000000020000380
RBP: 00007f517b1f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000835 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f517b336080 R15: 00007fff609e05f8
INFO: task syz.0.1281:12276 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1281 state:D stack:27400 pid:12276 tgid:12263 ppid:6511 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x184c/0x4bd0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x147/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6905
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d3/0x210 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:818 [inline]
vfs_setxattr+0x1dd/0x420 fs/xattr.c:320
do_setxattr fs/xattr.c:636 [inline]
filename_setxattr+0x2ab/0x430 fs/xattr.c:665
path_setxattrat+0x43c/0x510 fs/xattr.c:713
__do_sys_setxattr fs/xattr.c:747 [inline]
__se_sys_setxattr fs/xattr.c:743 [inline]
__x64_sys_setxattr+0xb8/0xd0 fs/xattr.c:743
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f517b17e819
RSP: 002b:00007f517bf78038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f517b336160 RCX: 00007f517b17e819
RDX: 0000000020001400 RSI: 00000000200001c0 RDI: 0000000020000200
RBP: 00007f517b1f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000835 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f517b336160 R15: 00007fff609e05f8
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8e33f2f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#0: ffffffff8e33f2f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x44d/0x820 kernel/rcu/tree_exp.h:976
1 lock held by khungtaskd/30:
#0: ffffffff8e339d20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e339d20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e339d20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:6/1308:
2 locks held by kworker/u8:7/3476:
2 locks held by kworker/u8:8/3506:
#0: ffff8880b863e918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:598
#1: ffff8880b8628948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x419/0x790 kernel/sched/psi.c:987
2 locks held by getty/5542:
#0: ffff8880346390a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900033132f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a2/0x1df0 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/6516:
#0: ffffffff8e33f2f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#0: ffffffff8e33f2f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x44d/0x820 kernel/rcu/tree_exp.h:976
1 lock held by udevd/6524:
3 locks held by syz.0.1281/12264:
#0: ffff88814d2b4420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x90 fs/namespace.c:515
#1: ffff88806be42b98 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
#1: ffff88806be42b98 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:320
#2: ffff88806be42868 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
#2: ffff88806be42868 (&ei->xattr_sem){++++}-{4:4}, at: ext4_xattr_set_handle+0x267/0x1770 fs/ext4/xattr.c:2373
3 locks held by syz.0.1281/12274:
#0: ffff88814d2b4420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x90 fs/namespace.c:515
#1: ffff88806be43f68 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
#1: ffff88806be43f68 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:320
#2: ffff88806be43c38 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
#2: ffff88806be43c38 (&ei->xattr_sem){++++}-{4:4}, at: ext4_xattr_set_handle+0x267/0x1770 fs/ext4/xattr.c:2373
2 locks held by syz.0.1281/12276:
#0: ffff88814d2b4420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x90 fs/namespace.c:515
#1: ffff88806be42b98 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
#1: ffff88806be42b98 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:320
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x23d/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x194/0x2f0 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+0xfe4/0x1030 kernel/hung_task.c:379
kthread+0x2ec/0x380 kernel/kthread.c:389
ret_from_fork+0x47/0x80 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: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:trace_sched_util_est_cfs_tp+0x36/0x130 include/trace/events/sched.h:810
Code: 9a 7e 83 f8 08 73 41 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 f0 78 b1 8f be 08 00 00 00 e8 92 aa 95 00 48 0f a3 1d 5a 04 48 0e <73> 12 e8 e3 f9 10 00 84 c0 75 09 80 3d a2 4f 32 0e 00 74 0e 5b 41
RSP: 0018:ffffc900001e7b60 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8169748e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fb178f0
RBP: 1ffff110170e7d4f R08: ffffffff8fb178f7 R09: 1ffffffff1f62f1e
R10: dffffc0000000000 R11: fffffbfff1f62f1f R12: 0000000000000144
R13: ffff88801cae8000 R14: ffff8880b873ea78 R15: ffff8880b873e9c0
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d5ffff CR3: 000000000e136000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
util_est_dequeue kernel/sched/fair.c:4965 [inline]
dequeue_task_fair+0xe0/0x540 kernel/sched/fair.c:7193
block_task kernel/sched/core.c:2131 [inline]
try_to_block_task kernel/sched/core.c:6593 [inline]
__schedule+0x5ee/0x4bd0 kernel/sched/core.c:6705
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x147/0x320 kernel/sched/core.c:6848
smpboot_thread_fn+0x61a/0xa20 kernel/smpboot.c:160
kthread+0x2ec/0x380 kernel/kthread.c:389
ret_from_fork+0x47/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244