INFO: task syz-executor.0:8889 blocked for more than 143 seconds.
Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28752 pid: 8889 ppid: 3602 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
rwsem_down_write_slowpath+0xda7/0x1470 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:748 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f92c1889049
RSP: 002b:00007f92c29b3168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007f92c199c030 RCX: 00007f92c1889049
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007f92c18e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6e9aafef R14: 00007f92c29b3300 R15: 0000000000022000
INFO: task syz-executor.3:9148 blocked for more than 144 seconds.
Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28752 pid: 9148 ppid: 8914 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
rwsem_down_write_slowpath+0xda7/0x1470 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:748 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8bd8689049
RSP: 002b:00007f8bd9840168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007f8bd879c030 RCX: 00007f8bd8689049
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007f8bd86e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff64d1586f R14: 00007f8bd9840300 R15: 0000000000022000
INFO: task syz-executor.4:9146 blocked for more than 145 seconds.
Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28752 pid: 9146 ppid: 8913 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
rwsem_down_write_slowpath+0xda7/0x1470 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:748 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f440e089049
RSP: 002b:00007f440f23c168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007f440e19c030 RCX: 00007f440e089049
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007f440e0e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3dc6da3f R14: 00007f440f23c300 R15: 0000000000022000
INFO: task syz-executor.2:9147 blocked for more than 145 seconds.
Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28752 pid: 9147 ppid: 8915 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
rwsem_down_write_slowpath+0xda7/0x1470 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:748 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f84f8489049
RSP: 002b:00007f84f73fe168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007f84f859c030 RCX: 00007f84f8489049
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007f84f84e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd9ec81dbf R14: 00007f84f73fe300 R15: 0000000000022000
INFO: task syz-executor.1:9155 blocked for more than 146 seconds.
Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28752 pid: 9155 ppid: 8916 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
rwsem_down_write_slowpath+0xda7/0x1470 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:748 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd12c889049
RSP: 002b:00007fd12da43168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007fd12c99c030 RCX: 00007fd12c889049
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007fd12c8e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff028465bf R14: 00007fd12da43300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/0:1/14:
#0: ffff8880b9a39bd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:554
#1: ffff8880b9a27808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4d3/0x790 kernel/sched/psi.c:889
1 lock held by khungtaskd/28:
#0: ffffffff8cd1cd60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3273:
#0: ffff88814cd90098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e732e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c2/0x1c60 drivers/tty/n_tty.c:2075
2 locks held by syz-executor.3/9144:
2 locks held by syz-executor.3/9148:
#0: ffff8880554e6460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88804d400150 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock include/linux/fs.h:748 [inline]
#1: ffff88804d400150 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.4/9142:
2 locks held by syz-executor.4/9146:
#0: ffff888055188460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88804d400728 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock include/linux/fs.h:748 [inline]
#1: ffff88804d400728 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.2/9143:
2 locks held by syz-executor.2/9147:
#0: ffff888056182460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88804d4012d8 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock include/linux/fs.h:748 [inline]
#1: ffff88804d4012d8 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.1/9152:
2 locks held by syz-executor.1/9155:
#0: ffff8880251bc460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88804d4b8d00 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock include/linux/fs.h:748 [inline]
#1: ffff88804d4b8d00 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:369
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_preemption_disabled+0x9/0x1c0 lib/smp_processor_id.c:13
Code: cc 0f 1f 44 00 00 48 c7 c7 20 d8 f6 8a 48 c7 c6 60 d8 f6 8a eb 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 41 57 41 56 41 55 41 54 <53> 48 83 ec 10 49 89 f6 49 89 ff 65 48 8b 04 25 28 00 00 00 48 89
RSP: 0018:ffffc90000107650 EFLAGS: 00000046
RAX: 1ffff11027fcc88a RBX: ffff88813fe64450 RCX: dffffc0000000000
RDX: 1ffff92000020ee0 RSI: ffffffff8a8f5c80 RDI: ffffffff8af6d8a0
RBP: ffffc900001077b0 R08: dffffc0000000000 R09: fffffbfff1c426f6
R10: fffffbfff1c426f6 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000020edc R14: ffffc90000107710 R15: 0000000000000046
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f92c29d49e0 CR3: 000000000ca8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline]
lock_release+0x526/0x810 kernel/locking/lockdep.c:5663
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
__debug_object_init+0x830/0x1860 lib/debugobjects.c:605
init_timer_on_stack_key kernel/time/timer.c:752 [inline]
schedule_timeout+0x11d/0x300 kernel/time/timer.c:1879
toggle_allocation_gate+0x218/0x460 mm/kfence/core.c:792
process_one_work+0x83c/0x11a0 kernel/workqueue.c:2289
worker_thread+0xa6c/0x1290 kernel/workqueue.c:2436
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: cc int3
1: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
6: 48 c7 c7 20 d8 f6 8a mov $0xffffffff8af6d820,%rdi
d: 48 c7 c6 60 d8 f6 8a mov $0xffffffff8af6d860,%rsi
14: eb 0b jmp 0x21
16: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
1d: 00 00 00
20: 90 nop
21: 55 push %rbp
22: 41 57 push %r15
24: 41 56 push %r14
26: 41 55 push %r13
28: 41 54 push %r12
* 2a: 53 push %rbx <-- trapping instruction
2b: 48 83 ec 10 sub $0x10,%rsp
2f: 49 89 f6 mov %rsi,%r14
32: 49 89 ff mov %rdi,%r15
35: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
3c: 00 00
3e: 48 rex.W
3f: 89 .byte 0x89