INFO: task syz-executor.0:24572 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26960 pid:24572 ppid: 6532 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
rwsem_down_write_slowpath+0xd47/0x1440 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1528
inode_lock include/linux/fs.h:783 [inline]
open_last_lookups fs/namei.c:3347 [inline]
path_openat+0x853/0x3660 fs/namei.c:3556
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_creat fs/open.c:1304 [inline]
__se_sys_creat fs/open.c:1298 [inline]
__x64_sys_creat+0x11f/0x160 fs/open.c:1298
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd5c3f3dae9
RSP: 002b:00007fd5c1492188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fd5c4051020 RCX: 00007fd5c3f3dae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140
RBP: 00007fd5c3f97f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd84724c1f R14: 00007fd5c1492300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8cb1dd40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6173:
#0: ffff88807b537c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
2 locks held by kworker/u4:19/10290:
2 locks held by syz-executor.0/24572:
#0: ffff88809712c460 (sb_writers#21){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:376
#1: ffff88808d2196d0 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#1: ffff88808d2196d0 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: open_last_lookups fs/namei.c:3347 [inline]
#1: ffff88808d2196d0 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: path_openat+0x853/0x3660 fs/namei.c:3556
2 locks held by syz-executor.0/24588:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc2-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+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:210 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2966 Comm: systemd-journal Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x33a/0x2b00 kernel/locking/lockdep.c:4961
Code: 1a 00 00 48 8b 9c 24 88 00 00 00 83 fb 31 48 8b 7c 24 18 0f 83 b9 22 00 00 48 89 54 24 78 4c 8d 24 9b 4a 8d 9c e7 80 0a 00 00 <48> 89 d8 48 c1 e8 03 48 89 44 24 38 8a 04 30 84 c0 0f 85 c3 1b 00
RSP: 0018:ffffc90001cef520 EFLAGS: 00000046
RAX: ffffffff8f8e0b00 RBX: ffff88807a830a80 RCX: 0000000000000000
RDX: 0000000000000028 RSI: dffffc0000000000 RDI: ffff88807a830000
RBP: ffffc90001cef670 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1bfd15e R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: 0000000000000028 R15: ffff88807a830a58
FS: 00007fa4024e08c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3fecdd000 CR3: 0000000022c72000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5637
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:688 [inline]
dput+0x56/0x6e0 fs/dcache.c:874
path_put fs/namei.c:557 [inline]
terminate_walk+0x3dc/0x570 fs/namei.c:676
path_openat+0x278a/0x3660 fs/namei.c:3560
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_open fs/open.c:1236 [inline]
__se_sys_open fs/open.c:1232 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1232
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fa401a6f840
Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
RSP: 002b:00007ffe5a91ae18 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe5a91b120 RCX: 00007fa401a6f840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055e703ddf630
RBP: 000000000000000d R08: 000000000000c0c1 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000055e703dd4040 R14: 00007ffe5a91b0e0 R15: 000055e703ddf450
----------------
Code disassembly (best guess):
0: 1a 00 sbb (%rax),%al
2: 00 48 8b add %cl,-0x75(%rax)
5: 9c pushfq
6: 24 88 and $0x88,%al
8: 00 00 add %al,(%rax)
a: 00 83 fb 31 48 8b add %al,-0x74b7ce05(%rbx)
10: 7c 24 jl 0x36
12: 18 0f sbb %cl,(%rdi)
14: 83 b9 22 00 00 48 89 cmpl $0xffffff89,0x48000022(%rcx)
1b: 54 push %rsp
1c: 24 78 and $0x78,%al
1e: 4c 8d 24 9b lea (%rbx,%rbx,4),%r12
22: 4a 8d 9c e7 80 0a 00 lea 0xa80(%rdi,%r12,8),%rbx
29: 00
* 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 48 89 44 24 38 mov %rax,0x38(%rsp)
36: 8a 04 30 mov (%rax,%rsi,1),%al
39: 84 c0 test %al,%al
3b: 0f .byte 0xf
3c: 85 c3 test %eax,%ebx
3e: 1b 00 sbb (%rax),%eax