INFO: task syz-executor.4:19560 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.4 state:D stack:25296 pid:19560 ppid: 6568 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
blk_mq_freeze_queue_wait+0x105/0x190 block/blk-mq.c:178
lo_release+0x114/0x1f0 drivers/block/loop.c:1768
blkdev_put_whole block/bdev.c:694 [inline]
blkdev_put+0x477/0x7b0 block/bdev.c:956
deactivate_locked_super+0xa7/0xf0 fs/super.c:335
get_tree_bdev+0x422/0x630 fs/super.c:1297
vfs_get_tree+0x86/0x270 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x1986/0x2c30 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount+0x308/0x3c0 fs/namespace.c:3516
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: 0033:0x7f5b332fc01a
RSP: 002b:00007f5b3086ffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f5b332fc01a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5b30870000
RBP: 00007f5b30870040 R08: 00007f5b30870040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f5b30870000 R15: 0000000020214100
INFO: task systemd-udevd:19574 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:systemd-udevd state:D stack:25296 pid:19574 ppid: 2970 flags:0x00004000
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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:680
__mutex_lock kernel/locking/mutex.c:740 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
blkdev_get_by_dev+0xfc/0xb80 block/bdev.c:819
blkdev_open+0x137/0x2f0 block/fops.c:501
do_dentry_open+0x78b/0x1020 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x2896/0x3660 fs/namei.c:3559
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: 0033:0x7f8b19588840
RSP: 002b:00007fffff2072f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000055b9c3097e40 RCX: 00007f8b19588840
RDX: 000055b9c2c34fe3 RSI: 00000000000a0800 RDI: 000055b9c30aea00
RBP: 00007fffff207470 R08: 000055b9c2c34670 R09: 0000000000000010
R10: 000055b9c2c34d0c R11: 0000000000000246 R12: 00007fffff2073c0
R13: 000055b9c30a69f0 R14: 0000000000000003 R15: 000000000000000e
Showing all locks held in the system:
3 locks held by kworker/u4:0/8:
1 lock held by khungtaskd/27:
#0: ffffffff8cd1dc00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/u4:3/54:
#0: ffff8880b9b395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
#1: ffff8880b9b27888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4c1/0x780 kernel/sched/psi.c:880
#2: ffff88807a218d40 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1013 [inline]
#2: ffff88807a218d40 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0xa0/0x14f0 net/mac80211/ibss.c:1681
#3: ffffffff8cd1dc00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:267
#4: ffffffff910c26d8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x97/0x6a0 lib/debugobjects.c:661
1 lock held by in:imklog/6160:
#0: ffff888023856ff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
2 locks held by syz-executor.4/19560:
#0: ffff88801b5e7918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfa/0x7b0 block/bdev.c:914
#1: ffff88801b5e3360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:1748
1 lock held by systemd-udevd/19574:
#0: ffff88801b5e7918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0xb80 block/bdev.c:819
=============================================
NMI backtrace for cpu 1
CPU: 1 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+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: 2957 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:lockdep_hardirqs_on_prepare+0x127/0x780 kernel/locking/lockdep.c:4273
Code: c7 44 24 40 00 00 00 00 9c 8f 44 24 40 80 3c 13 00 74 12 4c 89 f7 e8 58 aa 6a 00 48 ba 00 00 00 00 00 fc ff df f6 44 24 41 02 <0f> 85 5f 03 00 00 48 c7 c0 20 e9 db 90 48 c1 e8 03 8a 04 10 84 c0
RSP: 0018:ffffc9000276fc60 EFLAGS: 00000046
RAX: 1ffffffff21b7d04 RBX: 1ffff920004edf94 RCX: ffffffff90dbe903
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff81d04b44
RBP: ffffc9000276fd18 R08: ffffffff818b1130 R09: ffffc9000276fb2c
R10: fffffbfff1c3d246 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000276fdc8 R14: ffffc9000276fca0 R15: 1ffff920004edf90
FS: 00007f3d6530c8c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d62892000 CR3: 000000001e7c7000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on+0x6f/0x80 kernel/trace/trace_preemptirq.c:49
kasan_quarantine_put+0xd4/0x230 mm/kasan/quarantine.c:220
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kmem_cache_free+0x95/0x190 mm/slub.c:3529
putname fs/namei.c:270 [inline]
do_mkdirat+0x49d/0x530 fs/namei.c:3918
__do_sys_mkdir fs/namei.c:3929 [inline]
__se_sys_mkdir fs/namei.c:3927 [inline]
__x64_sys_mkdir+0x6a/0x80 fs/namei.c:3927
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: 0033:0x7f3d645c7687
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:00007ffc4dc7fed8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffc4dc82f40 RCX: 00007f3d645c7687
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 0000563927c3a8a0
RBP: 00007ffc4dc7ff10 R08: 00005639262513e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000563927c3a8a0 R15: 00007ffc4dc80550
----------------
Code disassembly (best guess):
0: c7 44 24 40 00 00 00 movl $0x0,0x40(%rsp)
7: 00
8: 9c pushfq
9: 8f 44 24 40 popq 0x40(%rsp)
d: 80 3c 13 00 cmpb $0x0,(%rbx,%rdx,1)
11: 74 12 je 0x25
13: 4c 89 f7 mov %r14,%rdi
16: e8 58 aa 6a 00 callq 0x6aaa73
1b: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
22: fc ff df
25: f6 44 24 41 02 testb $0x2,0x41(%rsp)
* 2a: 0f 85 5f 03 00 00 jne 0x38f <-- trapping instruction
30: 48 c7 c0 20 e9 db 90 mov $0xffffffff90dbe920,%rax
37: 48 c1 e8 03 shr $0x3,%rax
3b: 8a 04 10 mov (%rax,%rdx,1),%al
3e: 84 c0 test %al,%al