INFO: task syz-executor.2:14877 can't die for more than 143 seconds.
task:syz-executor.2 state:D stack:27376 pid:14877 ppid: 6551 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
kthread_stop+0x17a/0x710 kernel/kthread.c:648
ext4_stop_mmpd+0x47/0xd0 fs/ext4/mmp.c:255
ext4_fill_super+0x892d/0xd750 fs/ext4/super.c:5060
mount_bdev+0x34d/0x410 fs/super.c:1368
legacy_get_tree+0x105/0x220 fs/fs_context.c:610
vfs_get_tree+0x89/0x2f0 fs/super.c:1498
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x1320/0x1fa0 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: 0033:0x7f275707af6a
RSP: 002b:00007f27545cdfa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f275707af6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f27545ce000
RBP: 00007f27545ce040 R08: 00007f27545ce040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f27545ce000 R15: 0000000020000340
INFO: task syz-executor.2:14877 blocked for more than 143 seconds.
Not tainted 5.15.0-rc5-next-20211015-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27376 pid:14877 ppid: 6551 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
kthread_stop+0x17a/0x710 kernel/kthread.c:648
ext4_stop_mmpd+0x47/0xd0 fs/ext4/mmp.c:255
ext4_fill_super+0x892d/0xd750 fs/ext4/super.c:5060
mount_bdev+0x34d/0x410 fs/super.c:1368
legacy_get_tree+0x105/0x220 fs/fs_context.c:610
vfs_get_tree+0x89/0x2f0 fs/super.c:1498
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x1320/0x1fa0 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: 0033:0x7f275707af6a
RSP: 002b:00007f27545cdfa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f275707af6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f27545ce000
RBP: 00007f27545ce040 R08: 00007f27545ce040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f27545ce000 R15: 0000000020000340
Showing all locks held in the system:
2 locks held by kworker/u4:1/10:
#0: ffff8880b9c39a58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
1 lock held by khungtaskd/26:
#0: ffffffff8bb82ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by kworker/u4:3/54:
1 lock held by in:imklog/6235:
1 lock held by syz-executor.2/14877:
#0: ffff88807e7500e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xac0 fs/super.c:229
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.15.0-rc5-next-20211015-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2960 Comm: systemd-journal Not tainted 5.15.0-rc5-next-20211015-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:_compound_head include/linux/page-flags.h:192 [inline]
RIP: 0010:virt_to_head_page include/linux/mm.h:863 [inline]
RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:120 [inline]
RIP: 0010:qlist_free_all+0x89/0xc0 mm/kasan/quarantine.c:162
Code: 4c 89 fe 48 85 ed 48 89 ef 75 cb 48 89 f7 48 89 34 24 e8 da bb 76 ff 48 8b 34 24 48 c1 e8 0c 48 c1 e0 06 4c 01 f0 48 8b 50 08 <48> 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 eb 9b 49 c7 45 08 00
RSP: 0018:ffffc90001f6fdf8 EFLAGS: 00000286
RAX: ffffea00027c9200 RBX: ffff88809f1e2200 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88809f248000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000002e
R10: ffffffff8134bd4a R11: 000000000000003f R12: dffffc0000000000
R13: ffffc90001f6fe30 R14: ffffea0000000000 R15: ffff88809f248000
FS: 00007fc3e31a68c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc3e0647000 CR3: 000000001e643000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
__kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3212 [inline]
slab_alloc mm/slub.c:3220 [inline]
kmem_cache_alloc+0x209/0x390 mm/slub.c:3225
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:3931 [inline]
__se_sys_mkdir fs/namei.c:3929 [inline]
__x64_sys_mkdir+0xda/0x140 fs/namei.c:3929
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: 0033:0x7fc3e2461687
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:00007fff329b3ca8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fff329b6d10 RCX: 00007fc3e2461687
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 0000555fc2c998a0
RBP: 00007fff329b3ce0 R08: 0000555fc29d43e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000555fc2c998a0 R15: 00007fff329b4320
----------------
Code disassembly (best guess):
0: 4c 89 fe mov %r15,%rsi
3: 48 85 ed test %rbp,%rbp
6: 48 89 ef mov %rbp,%rdi
9: 75 cb jne 0xffffffd6
b: 48 89 f7 mov %rsi,%rdi
e: 48 89 34 24 mov %rsi,(%rsp)
12: e8 da bb 76 ff callq 0xff76bbf1
17: 48 8b 34 24 mov (%rsp),%rsi
1b: 48 c1 e8 0c shr $0xc,%rax
1f: 48 c1 e0 06 shl $0x6,%rax
23: 4c 01 f0 add %r14,%rax
26: 48 8b 50 08 mov 0x8(%rax),%rdx
* 2a: 48 8d 4a ff lea -0x1(%rdx),%rcx <-- trapping instruction
2e: 83 e2 01 and $0x1,%edx
31: 48 0f 45 c1 cmovne %rcx,%rax
35: 48 8b 78 18 mov 0x18(%rax),%rdi
39: eb 9b jmp 0xffffffd6
3b: 49 rex.WB
3c: c7 .byte 0xc7
3d: 45 08 00 or %r8b,(%r8)