INFO: task syz-executor.0:21314 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-02237-g1bc191051dca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27272 pid:21314 ppid: 3609 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
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:1264 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1299
io_uring_clean_tctx fs/io_uring.c:10512 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10582
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a30 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x4b0/0x28c0 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:149 [inline]
exit_to_user_mode_loop kernel/entry/common.c:187 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:315
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fab8ae89049
RSP: 002b:00007fab8bf60218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fab8af9bf68 RCX: 00007fab8ae89049
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fab8af9bf6c
RBP: 00007fab8af9bf60 R08: 00007ffe115d6080 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007fab8af9bf6c
R13: 00007fab8b4cfb1f R14: 00007fab8bf60300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-02237-g1bc191051dca #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:377
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: 2954 Comm: klogd Tainted: G W 5.17.0-syzkaller-02237-g1bc191051dca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unwind_next_frame+0xcc9/0x1ce0 arch/x86/kernel/unwind_orc.c:534
Code: 20 e8 6b 74 8f 00 4c 8b 44 24 20 e9 2c f7 ff ff e8 63 bd cb ff e9 aa f7 ff ff 48 8b 44 24 60 4c 89 e2 4c 89 f7 48 89 4c 24 30 <4c> 89 44 24 28 48 8d 70 f8 48 89 44 24 20 e8 d4 f1 ff ff 4c 8b 44
RSP: 0018:ffffc90002b8f408 EFLAGS: 00000246
RAX: ffffc90002b8fd28 RBX: 1ffff92000571e89 RCX: ffffffff8e852a0d
RDX: ffffc90002b8f528 RSI: 0000000000000000 RDI: ffffc90002b8f4e0
RBP: 0000000000000001 R08: ffffffff8e852a08 R09: 0000000000000001
R10: fffff52000571ea7 R11: 0000000000088078 R12: ffffc90002b8f528
R13: ffffc90002b8f515 R14: ffffc90002b8f4e0 R15: ffffffff8e852a0c
FS: 00007fc59e68f800(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008373000 CR3: 000000007f6f7000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
save_stack+0x151/0x1e0 mm/page_owner.c:121
__reset_page_owner+0x5d/0x180 mm/page_owner.c:142
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1348 [inline]
free_pcp_prepare+0x548/0xd10 mm/page_alloc.c:1400
free_unref_page_prepare mm/page_alloc.c:3269 [inline]
free_unref_page+0x19/0x690 mm/page_alloc.c:3364
__unfreeze_partials+0x17c/0x1a0 mm/slub.c:2536
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:239 [inline]
slab_post_alloc_hook mm/slab.h:749 [inline]
slab_alloc_node mm/slub.c:3230 [inline]
__kmalloc_node_track_caller+0x238/0x360 mm/slub.c:4971
kmalloc_reserve net/core/skbuff.c:354 [inline]
__alloc_skb+0xde/0x340 net/core/skbuff.c:426
alloc_skb include/linux/skbuff.h:1158 [inline]
alloc_skb_with_frags+0x93/0x730 net/core/skbuff.c:5956
sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2586
unix_dgram_sendmsg+0x414/0x1a10 net/unix/af_unix.c:1896
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
__sys_sendto+0x21c/0x320 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: 0033:0x7fc59e82b0ac
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:00007fff4c2c1558 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc59e82b0ac
RDX: 000000000000003e RSI: 0000560075248550 RDI: 0000000000000003
RBP: 0000560075240910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fc59e9a677d R15: 00007fff4c2c1668
----------------
Code disassembly (best guess):
0: 20 e8 and %ch,%al
2: 6b 74 8f 00 4c imul $0x4c,0x0(%rdi,%rcx,4),%esi
7: 8b 44 24 20 mov 0x20(%rsp),%eax
b: e9 2c f7 ff ff jmpq 0xfffff73c
10: e8 63 bd cb ff callq 0xffcbbd78
15: e9 aa f7 ff ff jmpq 0xfffff7c4
1a: 48 8b 44 24 60 mov 0x60(%rsp),%rax
1f: 4c 89 e2 mov %r12,%rdx
22: 4c 89 f7 mov %r14,%rdi
25: 48 89 4c 24 30 mov %rcx,0x30(%rsp)
* 2a: 4c 89 44 24 28 mov %r8,0x28(%rsp) <-- trapping instruction
2f: 48 8d 70 f8 lea -0x8(%rax),%rsi
33: 48 89 44 24 20 mov %rax,0x20(%rsp)
38: e8 d4 f1 ff ff callq 0xfffff211
3d: 4c rex.WR
3e: 8b .byte 0x8b
3f: 44 rex.R