INFO: task syz-executor.2:21489 blocked for more than 143 seconds.
Not tainted 6.0.0-rc7-syzkaller-00132-g987a926c1d8a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23736 pid:21489 ppid: 21098 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
io_uring_del_tctx_node+0xe7/0x2a2 io_uring/tctx.c:175
io_uring_clean_tctx+0x106/0x1d0 io_uring/tctx.c:191
io_uring_cancel_generic+0x60e/0x66f io_uring/io_uring.c:2855
io_uring_files_cancel include/linux/io_uring.h:44 [inline]
do_exit+0x13d/0x20a0 kernel/exit.c:750
do_group_exit+0x23b/0x2f0 kernel/exit.c:925
get_signal+0x172f/0x1780 kernel/signal.c:2857
arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:166
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd97308a5a9
RSP: 002b:00007fd974163218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd9731abf88 RCX: 00007fd97308a5a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd9731abf88
RBP: 00007fd9731abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9731abf8c
R13: 00007ffe0163ed5f R14: 00007fd974163300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/u4:0/9:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cd20a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cd21270 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/29:
#0: ffffffff8cd208a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3289:
#0: ffff8880278cb098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.2/20904:
3 locks held by syz-executor.0/20934:
2 locks held by syz-executor.2/21020:
2 locks held by syz-executor.0/21064:
1 lock held by syz-executor.2/21489:
#0: ffff8880276ff0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0xe7/0x2a2 io_uring/tctx.c:175
2 locks held by syz-executor.2/21499:
3 locks held by syz-executor.4/21610:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.0.0-rc7-syzkaller-00132-g987a926c1d8a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x47c/0x4b0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x169/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21610 Comm: syz-executor.4 Not tainted 6.0.0-rc7-syzkaller-00132-g987a926c1d8a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:lock_is_held_type+0x151/0x190 kernel/locking/lockdep.c:5714
Code: 24 f7 04 24 00 02 00 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 3c 89 e8 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 40 77 ad 8a e8 e6
RSP: 0018:ffffc90009acef60 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: dffffc0000000000
RDX: ffffc9000b8c9000 RSI: ffffffff8aad88c0 RDI: ffffffff8b0a6780
RBP: 0000000000000000 R08: ffffffff846c6cf6 R09: fffffbfff1ff4609
R10: fffffbfff1ff4609 R11: 1ffffffff1ff4608 R12: 0000000000000246
R13: ffff88801c05d880 R14: 00000000ffffffff R15: ffff88801f058818
FS: 00007fb73cbfe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0224c1000 CR3: 000000008e184000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
xa_entry include/linux/xarray.h:1198 [inline]
xas_descend+0xd5/0x400 lib/xarray.c:204
xas_load lib/xarray.c:242 [inline]
xa_get_order+0x252/0x530 lib/xarray.c:1768
__filemap_add_folio+0x522/0x19a0 mm/filemap.c:866
filemap_add_folio+0x12c/0x5c0 mm/filemap.c:933
page_cache_ra_unbounded+0x220/0x640 mm/readahead.c:245
page_cache_sync_readahead include/linux/pagemap.h:1215 [inline]
filemap_get_pages+0x483/0x1190 mm/filemap.c:2566
filemap_read+0x3ce/0xeb0 mm/filemap.c:2660
blkdev_read_iter+0x3de/0x520 block/fops.c:598
call_read_iter include/linux/fs.h:2181 [inline]
io_iter_do_read io_uring/rw.c:643 [inline]
io_read+0x4a1/0x1290 io_uring/rw.c:765
io_issue_sqe+0x458/0xeb0 io_uring/io_uring.c:1577
io_queue_sqe io_uring/io_uring.c:1755 [inline]
io_submit_sqe io_uring/io_uring.c:2013 [inline]
io_submit_sqes+0xa8f/0x1ba0 io_uring/io_uring.c:2124
__do_sys_io_uring_enter io_uring/io_uring.c:3057 [inline]
__se_sys_io_uring_enter+0x323/0x1cc0 io_uring/io_uring.c:2987
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb73dc8a5a9
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:00007fb73cbfe168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fb73ddabf80 RCX: 00007fb73dc8a5a9
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 00007fb73dce5580 R08: 0000000000000000 R09: 0000000000000000
R10: 3800000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd56eb923f R14: 00007fb73cbfe300 R15: 0000000000022000