INFO: task syz-executor.0:3515 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27544 pid: 3515 ppid: 17724 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
rwsem_down_write_slowpath+0x634/0x1110 kernel/locking/rwsem.c:1151
__down_write_common kernel/locking/rwsem.c:1268 [inline]
__down_write_common kernel/locking/rwsem.c:1265 [inline]
__down_write kernel/locking/rwsem.c:1277 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1524
inode_lock include/linux/fs.h:783 [inline]
lock_mount+0x8a/0x2e0 fs/namespace.c:2242
do_new_mount_fc fs/namespace.c:2931 [inline]
do_new_mount fs/namespace.c:2990 [inline]
path_mount+0x14c6/0x1fa0 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0de512fae9
RSP: 002b:00007f0de2684188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0de5243020 RCX: 00007f0de512fae9
RDX: 0000000020000140 RSI: 0000000020000200 RDI: 0000000000000000
RBP: 00007f0de5189f6d R08: 0000000020000580 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8f720adf R14: 00007f0de2684300 R15: 0000000000022000
INFO: task syz-executor.0:3554 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28832 pid: 3554 ppid: 17724 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
rwsem_down_write_slowpath+0x634/0x1110 kernel/locking/rwsem.c:1151
__down_write_common kernel/locking/rwsem.c:1268 [inline]
__down_write_common kernel/locking/rwsem.c:1265 [inline]
__down_write kernel/locking/rwsem.c:1277 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1524
inode_lock include/linux/fs.h:783 [inline]
vfs_setxattr+0x11c/0x330 fs/xattr.c:300
setxattr+0x218/0x2b0 fs/xattr.c:575
path_setxattr+0x197/0x1c0 fs/xattr.c:595
__do_sys_setxattr fs/xattr.c:611 [inline]
__se_sys_setxattr fs/xattr.c:607 [inline]
__x64_sys_setxattr+0xc0/0x160 fs/xattr.c:607
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0de512fae9
RSP: 002b:00007f0de2663188 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f0de52430e0 RCX: 00007f0de512fae9
RDX: 0000000020000340 RSI: 0000000020000180 RDI: 0000000020000080
RBP: 00007f0de5189f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000006000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8f720adf R14: 00007f0de2663300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by kworker/1:3/2932:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000b2afdb0 ((work_completion)(&m->wq)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
2 locks held by in:imklog/6210:
#0: ffff888073074ff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
#1: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
2 locks held by syz-executor.0/3505:
#0: ffff888077052460 (sb_writers#27){.+.+}-{0:0}, at: path_setxattr+0xb2/0x1c0 fs/xattr.c:593
#1: ffff888084ec6e70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#1: ffff888084ec6e70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: vfs_setxattr+0x11c/0x330 fs/xattr.c:300
1 lock held by syz-executor.0/3515:
#0: ffff888084ec6e70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#0: ffff888084ec6e70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2242
2 locks held by syz-executor.0/3554:
#0: ffff888077052460 (sb_writers#27){.+.+}-{0:0}, at: path_setxattr+0xb2/0x1c0 fs/xattr.c:593
#1: ffff888084ec6e70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#1: ffff888084ec6e70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: vfs_setxattr+0x11c/0x330 fs/xattr.c:300
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8940 Comm: kworker/u4:7 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:mark_lock+0x3d/0x17b0 kernel/locking/lockdep.c:4566
Code: ff df 55 53 48 81 ec 18 01 00 00 48 8d 5c 24 38 48 89 3c 24 48 c7 44 24 38 b3 8a b5 41 48 c1 eb 03 48 c7 44 24 40 70 4b 37 8b <48> 8d 04 13 48 c7 44 24 48 50 41 5c 81 c7 00 f1 f1 f1 f1 c7 40 04
RSP: 0018:ffffc9000499f638 EFLAGS: 00000012
RAX: 0000000000000000 RBX: 1ffff92000933ece RCX: 1ffffffff1fef34e
RDX: dffffc0000000000 RSI: ffff88807cda2828 RDI: ffff88807cda1d00
RBP: ffff88807cda284a R08: 0000000000000000 R09: ffffffff8ff72a17
R10: 0000000000000001 R11: 000000000000003f R12: 0000000000000006
R13: ffff88807cda1d00 R14: ffff88807cda2760 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcdb4c70000 CR3: 000000000b88e000 CR4: 0000000000350ee0
Call Trace:
mark_usage kernel/locking/lockdep.c:4518 [inline]
__lock_acquire+0x88f/0x54a0 kernel/locking/lockdep.c:4981
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
__get_locked_pte+0x2b6/0x4d0 mm/memory.c:1722
get_locked_pte include/linux/mm.h:2160 [inline]
__text_poke+0x1ae/0x8c0 arch/x86/kernel/alternative.c:1000
text_poke_bp_batch+0x3d7/0x560 arch/x86/kernel/alternative.c:1361
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1448 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d5/0x430 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:732 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:724
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: df 55 53 fists 0x53(%rbp)
3: 48 81 ec 18 01 00 00 sub $0x118,%rsp
a: 48 8d 5c 24 38 lea 0x38(%rsp),%rbx
f: 48 89 3c 24 mov %rdi,(%rsp)
13: 48 c7 44 24 38 b3 8a movq $0x41b58ab3,0x38(%rsp)
1a: b5 41
1c: 48 c1 eb 03 shr $0x3,%rbx
20: 48 c7 44 24 40 70 4b movq $0xffffffff8b374b70,0x40(%rsp)
27: 37 8b
* 29: 48 8d 04 13 lea (%rbx,%rdx,1),%rax <-- trapping instruction
2d: 48 c7 44 24 48 50 41 movq $0xffffffff815c4150,0x48(%rsp)
34: 5c 81
36: c7 00 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rax)
3c: c7 .byte 0xc7
3d: 40 rex
3e: 04 .byte 0x4