INFO: task syz-executor.0:5912 blocked for more than 143 seconds.
Not tainted 5.18.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27744 pid: 5912 ppid: 3642 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10381 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10451
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fab7fe890e9
RSP: 002b:00007fab810ab218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fab7ff9bf68 RCX: 00007fab7fe890e9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fab7ff9bf6c
RBP: 00007fab7ff9bf60 R08: 00007ffeef9f7080 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007fab7ff9bf6c
R13: 00007fab804cfb1f R14: 00007fab810ab300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd820e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3284:
#0: ffff88807edb0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002ce62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc4-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+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2951 Comm: klogd Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:60 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x52/0x180 mm/kasan/generic.c:189
Code: 39 c7 0f 86 05 01 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 <48> 89 e8 49 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 7e 63 41 89 eb
RSP: 0018:ffffc90002acf2f0 EFLAGS: 00000082
RAX: dffffc0000000000 RBX: 0000000000000021 RCX: ffffffff815d4aec
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90058900
RBP: fffffbfff200b120 R08: 0000000000000000 R09: ffffffff90058907
R10: fffffbfff200b120 R11: 0000000000000001 R12: ffff88807d226358
R13: ffff88807d225880 R14: 0000000000060000 R15: 0000000000000000
FS: 00007f3ad715a800(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00c71b004 CR3: 000000007f2c1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
__lock_acquire+0x102c/0x56c0 kernel/locking/lockdep.c:4999
lock_acquire kernel/locking/lockdep.c:5641 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline]
read_seqbegin include/linux/seqlock.h:840 [inline]
zone_span_seqbegin include/linux/memory_hotplug.h:139 [inline]
page_outside_zone_boundaries mm/page_alloc.c:565 [inline]
bad_range+0xa6/0x330 mm/page_alloc.c:592
__free_one_page+0x131/0x13e0 mm/page_alloc.c:1070
free_pcppages_bulk+0x311/0x690 mm/page_alloc.c:1509
free_unref_page_commit+0x5fb/0x900 mm/page_alloc.c:3410
free_unref_page+0x270/0x6a0 mm/page_alloc.c:3443
__unfreeze_partials+0x17c/0x1a0 mm/slub.c:2523
qlink_free mm/kasan/quarantine.c:157 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:446
kasan_slab_alloc include/linux/kasan.h:224 [inline]
slab_post_alloc_hook mm/slab.h:749 [inline]
slab_alloc_node mm/slub.c:3217 [inline]
kmem_cache_alloc_node+0x255/0x3f0 mm/slub.c:3267
__alloc_skb+0x215/0x340 net/core/skbuff.c:414
alloc_skb include/linux/skbuff.h:1300 [inline]
alloc_skb_with_frags+0x93/0x730 net/core/skbuff.c:5995
sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2600
unix_dgram_sendmsg+0x414/0x1a90 net/unix/af_unix.c:1896
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
__sys_sendto+0x216/0x310 net/socket.c:2040
__do_sys_sendto net/socket.c:2052 [inline]
__se_sys_sendto net/socket.c:2048 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2048
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: 0033:0x7f3ad72f60ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffec12716f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3ad72f60ac
RDX: 000000000000003e RSI: 000056009e9e0bd0 RDI: 0000000000000003
RBP: 000056009e9d9910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007f3ad747177d R15: 00007ffec1271808
----------------
Code disassembly (best guess):
0: 39 c7 cmp %eax,%edi
2: 0f 86 05 01 00 00 jbe 0x10d
8: 49 83 e9 01 sub $0x1,%r9
c: 48 89 fd mov %rdi,%rbp
f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
16: fc ff df
19: 4d 89 ca mov %r9,%r10
1c: 48 c1 ed 03 shr $0x3,%rbp
20: 49 c1 ea 03 shr $0x3,%r10
24: 48 01 c5 add %rax,%rbp
27: 49 01 c2 add %rax,%r10
* 2a: 48 89 e8 mov %rbp,%rax <-- trapping instruction
2d: 49 8d 5a 01 lea 0x1(%r10),%rbx
31: 48 89 da mov %rbx,%rdx
34: 48 29 ea sub %rbp,%rdx
37: 48 83 fa 10 cmp $0x10,%rdx
3b: 7e 63 jle 0xa0
3d: 41 89 eb mov %ebp,%r11d