INFO: task syz-executor.3:443 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24232 pid: 443 ppid: 6777 flags:0x20000004
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
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178
loop_set_status+0x440/0x930 drivers/block/loop.c:1264
loop_set_status_compat+0xac/0x100 drivers/block/loop.c:1674
lo_compat_ioctl+0xeb/0x110 drivers/block/loop.c:1700
compat_blkdev_ioctl+0x3b8/0x810 block/ioctl.c:674
__do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:972
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f3c549
RSP: 002b:00000000f45365fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000004c02
RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
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 systemd-udevd/2968:
#0: ffff88801a2e1918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801a2cd360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
1 lock held by in:imklog/6218:
#0: ffff888021afad70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by kworker/u4:7/8783:
1 lock held by syz-executor.3/443:
#0: ffff88801a2cd360 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x930 drivers/block/loop.c:1248
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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: 2965 Comm: systemd-journal Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:163 [inline]
RIP: 0010:unwind_next_frame+0x23b/0x1ce0 arch/x86/kernel/unwind_orc.c:443
Code: 8d 43 ff 39 c6 0f 83 c3 13 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 9c a9 a9 8e 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 30
RSP: 0018:ffffc90001b0fa48 EFLAGS: 00000a07
RAX: dffffc0000000000 RBX: 1ffff92000361f51 RCX: 0000000000000000
RDX: 000000000000be3a RSI: 000000000000be3a RDI: ffffffff8eaca284
RBP: 0000000000000001 R08: ffffffff8b9fa0e0 R09: 0000000000000001
R10: fffff52000361f6f R11: 000000000008808a R12: ffffc90001b0fb68
R13: ffffc90001b0fb55 R14: ffffc90001b0fb20 R15: ffffffff81be3aff
FS: 00007fbe33d008c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe30c6b018 CR3: 000000007a620000 CR4: 00000000003526e0
DR0: 00000000bf65f11c DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3234 [inline]
slab_alloc mm/slub.c:3242 [inline]
kmem_cache_alloc+0x202/0x3a0 mm/slub.c:3247
getname_flags.part.0+0x50/0x4f0 fs/namei.c:138
getname_flags include/linux/audit.h:323 [inline]
getname fs/namei.c:217 [inline]
__do_sys_mkdir fs/namei.c:3929 [inline]
__se_sys_mkdir fs/namei.c:3927 [inline]
__x64_sys_mkdir+0xda/0x140 fs/namei.c:3927
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: 0033:0x7fbe32fbb687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007fff168597d8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fff1685c6f0 RCX: 00007fbe32fbb687
RDX: 00007fbe33a2ca00 RSI: 00000000000001ed RDI: 000055840a8b38a0
RBP: 00007fff16859810 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fff1685c6f0 R15: 00007fff16859d00
----------------
Code disassembly (best guess):
0: 8d 43 ff lea -0x1(%rbx),%eax
3: 39 c6 cmp %eax,%esi
5: 0f 83 c3 13 00 00 jae 0x13ce
b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
12: fc ff df
15: 89 f2 mov %esi,%edx
17: 48 8d 3c 95 9c a9 a9 lea -0x71565664(,%rdx,4),%rdi
1e: 8e
1f: 48 89 f9 mov %rdi,%rcx
22: 48 c1 e9 03 shr $0x3,%rcx
26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx
* 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction
2d: 83 e0 07 and $0x7,%eax
30: 83 c0 03 add $0x3,%eax
33: 38 c8 cmp %cl,%al
35: 7c 27 jl 0x5e
37: 84 c9 test %cl,%cl
39: 74 23 je 0x5e
3b: 48 89 54 24 30 mov %rdx,0x30(%rsp)