INFO: task syz-executor.0:19214 blocked for more than 143 seconds.
Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26032 pid:19214 tgid:19213 ppid:18401 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
io_schedule+0x8c/0x110 kernel/sched/core.c:9023
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1274
invalidate_inode_pages2_range+0x467/0x1050 mm/truncate.c:648
blkdev_direct_write+0x49/0x140 block/fops.c:641
blkdev_write_iter+0x401/0x5b0 block/fops.c:706
call_write_iter include/linux/fs.h:2087 [inline]
aio_write+0x572/0x7d0 fs/aio.c:1635
io_submit_one+0x8a7/0x18b0 fs/aio.c:2054
__do_sys_io_submit fs/aio.c:2113 [inline]
__se_sys_io_submit+0x17f/0x300 fs/aio.c:2083
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f45e0a7dda9
RSP: 002b:00007f45e17e30c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f45e0babf80 RCX: 00007f45e0a7dda9
RDX: 0000000020001400 RSI: 0000000000000001 RDI: 00007f45e17c2000
RBP: 00007f45e0aca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f45e0babf80 R15: 00007ffd8738b188
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4821:
#0: ffff88802a9de0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/u4:12/10252:
#0: ffff8880b943c958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:567
#1: ffffc900031c7d20 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc900031c7d20 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffff8880b9529898 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
1 lock held by syz-executor.3/30146:
2 locks held by kworker/u4:0/7784:
1 lock held by syz-executor.2/17540:
1 lock held by syz-executor.2/17844:
1 lock held by syz-executor.2/18236:
1 lock held by syz-executor.3/20344:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2f1/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5100 Comm: syz-executor.5 Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:42 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 94 b4 1a 0c 48 89 de 5b e9 73 cf 56 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d a0 51 70 7e 65 8b 15 a1 51 70 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc900043bf140 EFLAGS: 00000002
RAX: ffffffff81406812 RBX: ffffffff90126082 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc900043bf600
RBP: ffffc900043bf220 R08: ffffffff81407b2b R09: ffffffff814066c0
R10: 0000000000000003 R11: ffff88807c89bb80 R12: ffffc900043bf608
R13: dffffc0000000000 R14: ffffc900043bf270 R15: 1ffff92000877e44
FS: 0000555555f8b480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7292d56c6 CR3: 0000000080a74000 CR4: 0000000000350ef0
Call Trace:
unwind_next_frame+0x1ac2/0x29e0 arch/x86/kernel/unwind_orc.c:648
arch_stack_walk+0x150/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:314 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:340
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
slab_alloc_node mm/slub.c:3860 [inline]
kmem_cache_alloc+0x16f/0x340 mm/slub.c:3867
radix_tree_node_alloc+0x19a/0x3c0 lib/radix-tree.c:253
radix_tree_extend+0x148/0x5c0 lib/radix-tree.c:425
idr_get_free+0x1af/0xab0 lib/radix-tree.c:1493
idr_alloc_u32+0x195/0x330 lib/idr.c:46
idr_alloc_cyclic+0x106/0x300 lib/idr.c:125
alloc_pid+0x331/0xc50 kernel/pid.c:236
copy_process+0x2299/0x3fc0 kernel/fork.c:2513
kernel_clone+0x21d/0x8d0 kernel/fork.c:2902
__do_sys_clone kernel/fork.c:3045 [inline]
__se_sys_clone kernel/fork.c:3029 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3029
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f01a127add3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffed1d0ed78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f01a127add3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555555f8b750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001