INFO: task syz-executor.0:16657 blocked for more than 143 seconds.
Not tainted 5.19.0-rc5-syzkaller-00187-ge8a4e1c1bb69 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27960 pid:16657 ppid: 16638 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:11584
io_uring_clean_tctx fs/io_uring.c:11600 [inline]
io_uring_cancel_generic+0x5c3/0x695 fs/io_uring.c:11678
io_uring_files_cancel include/linux/io_uring.h:44 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x2542/0x2600 kernel/signal.c:2857
arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
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+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f9480a89109
RSP: 002b:00007f9481b55218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f9480b9bf68 RCX: 00007f9480a89109
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9480b9bf68
RBP: 00007f9480b9bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9480b9bf6c
R13: 00007ffea78967af R14: 00007f9481b55300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd86660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3284:
#0: ffff88814a96f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d232e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
3 locks held by syz-executor.3/16297:
1 lock held by syz-executor.0/16657:
#0: ffff8880316680a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:11584
2 locks held by syz-executor.0/16658:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc5-syzkaller-00187-ge8a4e1c1bb69 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16658 Comm: syz-executor.0 Not tainted 5.19.0-rc5-syzkaller-00187-ge8a4e1c1bb69 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 kernel/kcov.c:200
Code: 81 e1 00 01 00 00 65 48 8b 14 25 80 6f 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 <83> f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 48
RSP: 0018:ffffc90002e1f0c0 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff888140e41df8 RCX: 0000000000000000
RDX: ffff8880183a9d80 RSI: ffffffff81a244b9 RDI: 0000000000000001
RBP: ffffea00022a8040 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 00000000001630b5
R13: 0000000000112cc0 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f9481b34700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01a0cbc30 CR3: 000000001d26f000 CR4: 0000000000350ee0
Call Trace:
xas_set_order include/linux/xarray.h:1615 [inline]
__filemap_add_folio+0xd99/0x1660 mm/filemap.c:862
filemap_add_folio+0xab/0x1d0 mm/filemap.c:959
page_cache_ra_unbounded+0x1d3/0x550 mm/readahead.c:245
do_page_cache_ra mm/readahead.c:293 [inline]
page_cache_ra_order+0x69a/0x970 mm/readahead.c:550
ondemand_readahead+0x7c5/0x1150 mm/readahead.c:672
page_cache_sync_ra+0x1c5/0x200 mm/readahead.c:699
page_cache_sync_readahead include/linux/pagemap.h:1234 [inline]
filemap_get_pages+0x2bf/0x17c0 mm/filemap.c:2594
filemap_read+0x311/0xe20 mm/filemap.c:2688
blkdev_read_iter+0x3e7/0x750 block/fops.c:594
call_read_iter include/linux/fs.h:2052 [inline]
io_iter_do_read fs/io_uring.c:4249 [inline]
io_read+0x323/0x13a0 fs/io_uring.c:4369
io_issue_sqe+0x6ca/0x91f0 fs/io_uring.c:8334
io_queue_sqe fs/io_uring.c:8718 [inline]
io_submit_sqe fs/io_uring.c:8982 [inline]
io_submit_sqes+0x1652/0x8120 fs/io_uring.c:9093
__do_sys_io_uring_enter+0x1112/0x2300 fs/io_uring.c:12040
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+0x46/0xb0
RIP: 0033:0x7f9480a89109
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9481b34168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f9480b9c030 RCX: 00007f9480a89109
RDX: 0000000000000e00 RSI: 0000000000000103 RDI: 0000000000000003
RBP: 00007f9480ae305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea78967af R14: 00007f9481b34300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 81 e1 00 01 00 00 and $0x100,%ecx
6: 65 48 8b 14 25 80 6f mov %gs:0x26f80,%rdx
d: 02 00
f: a9 00 01 ff 00 test $0xff0100,%eax
14: 74 0e je 0x24
16: 85 c9 test %ecx,%ecx
18: 74 35 je 0x4f
1a: 8b 82 a4 15 00 00 mov 0x15a4(%rdx),%eax
20: 85 c0 test %eax,%eax
22: 74 2b je 0x4f
24: 8b 82 80 15 00 00 mov 0x1580(%rdx),%eax
* 2a: 83 f8 02 cmp $0x2,%eax <-- trapping instruction
2d: 75 20 jne 0x4f
2f: 48 8b 8a 88 15 00 00 mov 0x1588(%rdx),%rcx
36: 8b 92 84 15 00 00 mov 0x1584(%rdx),%edx
3c: 48 8b 01 mov (%rcx),%rax
3f: 48 rex.W