INFO: task syz-executor419:4066 blocked for more than 143 seconds.
Not tainted 5.17.0-rc3-syzkaller-00020-g555f3d7be91a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor419 state:D stack:26944 pid: 4066 ppid: 3637 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
kthread_stop+0x17a/0x720 kernel/kthread.c:709
ext4_stop_mmpd+0x47/0xd0 fs/ext4/mmp.c:255
__ext4_fill_super fs/ext4/super.c:5505 [inline]
ext4_fill_super+0x9b4c/0xe810 fs/ext4/super.c:5554
get_tree_bdev+0x440/0x760 fs/super.c:1292
vfs_get_tree+0x89/0x2f0 fs/super.c:1497
do_new_mount fs/namespace.c:2994 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3324
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount fs/namespace.c:3522 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3522
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: 0033:0x7f5d1fa6a58a
RSP: 002b:00007ffdbf8fe758 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffdbf8fe7b0 RCX: 00007f5d1fa6a58a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdbf8fe770
RBP: 00007ffdbf8fe770 R08: 00007ffdbf8fe7b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200003f8
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000005
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83c20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/3272:
#0: ffff8880238f5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
1 lock held by syz-executor419/4066:
#0: ffff88807deec0e0 (&type->s_umount_key#28/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xa80 fs/super.c:228
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc3-syzkaller-00020-g555f3d7be91a #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+0x1b3/0x230 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3810 Comm: kworker/u4:4 Not tainted 5.17.0-rc3-syzkaller-00020-g555f3d7be91a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:write_comp_data kernel/kcov.c:221 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x18/0x70 kernel/kcov.c:267
Code: 48 89 74 38 e8 4e 89 54 c8 20 48 89 10 c3 0f 1f 40 00 49 89 f8 bf 03 00 00 00 4c 8b 14 24 48 89 f1 65 48 8b 34 25 00 70 02 00 c3 f7 ff ff 84 c0 74 48 48 8b 86 88 15 00 00 8b b6 84 15 00 00
RSP: 0018:ffffc90002b7f970 EFLAGS: 00000086
RAX: 0000000000000000 RBX: ffff8881406f5000 RCX: ffff8881c06f5000
RDX: ffff8880204cba00 RSI: ffff8880204cba00 RDI: 0000000000000003
RBP: ffff8881c06f5000 R08: ffff8881406f5000 R09: ffff888010e78418
R10: ffffffff81356848 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000009356
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11e6efa680 CR3: 000000000b88e000 CR4: 0000000000350ef0
Call Trace:
__phys_addr+0x28/0x140 arch/x86/mm/physaddr.c:20
build_cr3 arch/x86/mm/tlb.c:162 [inline]
build_cr3 arch/x86/mm/tlb.c:156 [inline]
load_new_mm_cr3+0xa2/0x130 arch/x86/mm/tlb.c:282
switch_mm_irqs_off+0x498/0xa10 arch/x86/mm/tlb.c:627
use_temporary_mm arch/x86/kernel/alternative.c:924 [inline]
__text_poke+0x44a/0x8c0 arch/x86/kernel/alternative.c:1021
text_poke_bp_batch+0x39a/0x510 arch/x86/kernel/alternative.c:1364
text_poke_flush arch/x86/kernel/alternative.c:1470 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1467 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1477
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1da/0x400 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:734 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:726
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 48 89 74 38 e8 mov %rsi,-0x18(%rax,%rdi,1)
5: 4e 89 54 c8 20 mov %r10,0x20(%rax,%r9,8)
a: 48 89 10 mov %rdx,(%rax)
d: c3 retq
e: 0f 1f 40 00 nopl 0x0(%rax)
12: 49 89 f8 mov %rdi,%r8
15: bf 03 00 00 00 mov $0x3,%edi
1a: 4c 8b 14 24 mov (%rsp),%r10
1e: 48 89 f1 mov %rsi,%rcx
21: 65 48 8b 34 25 00 70 mov %gs:0x27000,%rsi
28: 02 00
* 2a: e8 c3 f7 ff ff callq 0xfffff7f2 <-- trapping instruction
2f: 84 c0 test %al,%al
31: 74 48 je 0x7b
33: 48 8b 86 88 15 00 00 mov 0x1588(%rsi),%rax
3a: 8b b6 84 15 00 00 mov 0x1584(%rsi),%esi