INFO: task syz-executor.1:16515 can't die for more than 143 seconds.
task:syz-executor.1 state:D stack:28112 pid:16515 ppid: 6540 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4955 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6236
schedule+0xd3/0x270 kernel/sched/core.c:6315
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+0x176/0x280 kernel/sched/completion.c:138
__flush_work+0x56e/0xb10 kernel/workqueue.c:3083
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3170
p9_conn_destroy net/9p/trans_fd.c:886 [inline]
p9_fd_close+0x29c/0x520 net/9p/trans_fd.c:921
p9_client_create+0x95a/0x1110 net/9p/client.c:1073
v9fs_session_init+0x1dd/0x17b0 fs/9p/v9fs.c:406
v9fs_mount+0x79/0x9c0 fs/9p/vfs_super.c:126
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: 0033:0x7fb25c780709
RSP: 002b:00007fb259cd6188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb25c885020 RCX: 00007fb25c780709
RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007fb25c7dacb4 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9a1f3caf R14: 00007fb259cd6300 R15: 0000000000022000
INFO: task syz-executor.1:16515 blocked for more than 143 seconds.
Not tainted 5.15.0-rc2-next-20210924-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28112 pid:16515 ppid: 6540 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4955 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6236
schedule+0xd3/0x270 kernel/sched/core.c:6315
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+0x176/0x280 kernel/sched/completion.c:138
__flush_work+0x56e/0xb10 kernel/workqueue.c:3083
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3170
p9_conn_destroy net/9p/trans_fd.c:886 [inline]
p9_fd_close+0x29c/0x520 net/9p/trans_fd.c:921
p9_client_create+0x95a/0x1110 net/9p/client.c:1073
v9fs_session_init+0x1dd/0x17b0 fs/9p/v9fs.c:406
v9fs_mount+0x79/0x9c0 fs/9p/vfs_super.c:126
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: 0033:0x7fb25c780709
RSP: 002b:00007fb259cd6188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb25c885020 RCX: 00007fb25c780709
RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007fb25c7dacb4 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9a1f3caf R14: 00007fb259cd6300 R15: 0000000000022000
INFO: task syz-executor.1:16547 can't die for more than 144 seconds.
task:syz-executor.1 state:D stack:28112 pid:16547 ppid: 6540 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4955 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6236
schedule+0xd3/0x270 kernel/sched/core.c:6315
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+0x176/0x280 kernel/sched/completion.c:138
__flush_work+0x56e/0xb10 kernel/workqueue.c:3083
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3170
p9_conn_destroy net/9p/trans_fd.c:886 [inline]
p9_fd_close+0x29c/0x520 net/9p/trans_fd.c:921
p9_client_create+0x95a/0x1110 net/9p/client.c:1073
v9fs_session_init+0x1dd/0x17b0 fs/9p/v9fs.c:406
v9fs_mount+0x79/0x9c0 fs/9p/vfs_super.c:126
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: 0033:0x7fb25c780709
RSP: 002b:00007fb259c94188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb25c8851a0 RCX: 00007fb25c780709
RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007fb25c7dacb4 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9a1f3caf R14: 00007fb259c94300 R15: 0000000000022000
INFO: task syz-executor.1:16547 blocked for more than 144 seconds.
Not tainted 5.15.0-rc2-next-20210924-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28112 pid:16547 ppid: 6540 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4955 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6236
schedule+0xd3/0x270 kernel/sched/core.c:6315
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+0x176/0x280 kernel/sched/completion.c:138
__flush_work+0x56e/0xb10 kernel/workqueue.c:3083
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3170
p9_conn_destroy net/9p/trans_fd.c:886 [inline]
p9_fd_close+0x29c/0x520 net/9p/trans_fd.c:921
p9_client_create+0x95a/0x1110 net/9p/client.c:1073
v9fs_session_init+0x1dd/0x17b0 fs/9p/v9fs.c:406
v9fs_mount+0x79/0x9c0 fs/9p/vfs_super.c:126
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: 0033:0x7fb25c780709
RSP: 002b:00007fb259c94188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb25c8851a0 RCX: 00007fb25c780709
RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007fb25c7dacb4 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9a1f3caf R14: 00007fb259c94300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/u4:0/8:
1 lock held by khungtaskd/27:
#0: ffffffff8b9808a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
1 lock held by khugepaged/33:
#0: ffffffff8ba639c8 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:788
4 locks held by kworker/1:2/1507:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
#1: ffffc900058ffdb0 ((work_completion)(&m->rq)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
#2: ffff888073de4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#3: ffffc9001494b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
4 locks held by kworker/1:3/2932:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
#1: ffffc9000bebfdb0 ((work_completion)(&m->rq)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
#2: ffff888073de4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#3: ffffc9001494b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
2 locks held by in:imklog/6232:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc2-next-20210924-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: 2963 Comm: systemd-journal Not tainted 5.15.0-rc2-next-20210924-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:validate_chain kernel/locking/lockdep.c:3796 [inline]
RIP: 0010:__lock_acquire+0xcd4/0x54a0 kernel/locking/lockdep.c:5015
Code: 48 c7 c2 4c 9f 6e 8d 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 c7 c0 4c 9f 6e 8d 83 e0 07 83 c0 03 38 d0 7c 08 <84> d2 0f 85 65 35 00 00 8b 35 0a 71 13 0c 85 f6 0f 84 3c 01 00 00
RSP: 0018:ffffc90002c5f868 EFLAGS: 00000002
RAX: 0000000000000007 RBX: ffffffff8f0add40 RCX: ffffffff815b378f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f0add58
RBP: 000000000000aabe R08: 0000000000000000 R09: ffffffff8fd0d947
R10: fffffbfff1fa1b28 R11: 0000000000000000 R12: ffff88807b342790
R13: ffff88807b341d00 R14: 0000000000000000 R15: d045cae75a1e1578
FS: 00007f3fd1f178c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fcf499028 CR3: 000000007bbd1000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5625 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:980 [inline]
debug_check_no_obj_freed+0xc7/0x420 lib/debugobjects.c:1023
free_pages_prepare mm/page_alloc.c:1341 [inline]
free_pcp_prepare+0x2ae/0x870 mm/page_alloc.c:1387
free_unref_page_prepare mm/page_alloc.c:3307 [inline]
free_unref_page+0x19/0x690 mm/page_alloc.c:3386
__unfreeze_partials+0x343/0x360 mm/slub.c:2502
qlink_free mm/kasan/quarantine.c:146 [inline]
qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165
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:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3213 [inline]
slab_alloc mm/slub.c:3221 [inline]
kmem_cache_alloc+0x209/0x390 mm/slub.c:3226
getname_flags.part.0+0x50/0x4f0 fs/namei.c:138
getname_flags include/linux/audit.h:322 [inline]
getname+0x8e/0xd0 fs/namei.c:217
do_sys_openat2+0xf5/0x4d0 fs/open.c:1194
do_sys_open fs/open.c:1216 [inline]
__do_sys_open fs/open.c:1224 [inline]
__se_sys_open fs/open.c:1220 [inline]
__x64_sys_open+0x119/0x1c0 fs/open.c:1220
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: 0033:0x7f3fd14a6840
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:00007ffc307d7ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffc307d7eb0 RCX: 00007f3fd14a6840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000561b79ffe8d0
RBP: 000000000000000d R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000561b79ff1040 R14: 00007ffc307d7e70 R15: 0000561b79ffe920
----------------
Code disassembly (best guess):
0: 48 c7 c2 4c 9f 6e 8d mov $0xffffffff8d6e9f4c,%rdx
7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
e: fc ff df
11: 48 c1 ea 03 shr $0x3,%rdx
15: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx
19: 48 c7 c0 4c 9f 6e 8d mov $0xffffffff8d6e9f4c,%rax
20: 83 e0 07 and $0x7,%eax
23: 83 c0 03 add $0x3,%eax
26: 38 d0 cmp %dl,%al
28: 7c 08 jl 0x32
* 2a: 84 d2 test %dl,%dl <-- trapping instruction
2c: 0f 85 65 35 00 00 jne 0x3597
32: 8b 35 0a 71 13 0c mov 0xc13710a(%rip),%esi # 0xc137142
38: 85 f6 test %esi,%esi
3a: 0f 84 3c 01 00 00 je 0x17c