watchdog: BUG: soft lockup - CPU#2 stuck for 41s! [mountkernfs.sh:4110]
Modules linked in:
irq event stamp: 385
hardirqs last  enabled at (384): [<ffffffff88000c82>] asm_sysvec_reschedule_ipi+0x12/0x20 arch/x86/include/asm/idtentry.h:586
hardirqs last disabled at (385): [<ffffffff87f0399d>] irqentry_enter+0x1d/0x50 kernel/entry/common.c:318
softirqs last  enabled at (0): [<ffffffff8144cb2b>] copy_process+0x1a6b/0x68e0 kernel/fork.c:2018
softirqs last disabled at (381): [<ffffffff88000f2f>] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
CPU: 2 PID: 4110 Comm: mountkernfs.sh Not tainted 5.8.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:__do_softirq+0x1c2/0xa24 kernel/softirq.c:284
Code: c7 c0 58 34 b6 89 48 c1 e8 03 42 80 3c 30 00 0f 85 b9 07 00 00 48 83 3d a3 32 96 01 00 0f 84 6f 06 00 00 fb 66 0f 1f 44 00 00 <48> c7 44 24 08 c0 90 a0 89 b8 ff ff ff ff 0f bc 04 24 83 c0 01 89
RSP: 0000:ffffc90000540f70 EFLAGS: 00000286
RAX: 1ffffffff136c68b RBX: ffff888021429b00 RCX: 1ffffffff1562d79
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88200197
RBP: ffffc90000db7f00 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fe2c22c1700(0000) GS:ffff88802d000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000013080d8 CR3: 000000002bf23000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0x1f3/0x230 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1090
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0033:0x411c6f
Code: 31 c0 5b 5d c3 66 0f 1f 44 00 00 41 57 41 56 41 55 41 89 fd 41 54 55 53 48 83 ec 08 83 05 c0 84 20 00 01 48 8b 3d 39 a9 20 00 <48> 8b 07 48 8b 5f 08 48 89 05 2b a9 20 00 e8 4e 00 ff ff 48 85 db
RSP: 002b:00007ffcbb57dc30 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000001301eb0 RCX: 00007fe2c1deec65
RDX: 0000000000000000 RSI: 00000000012f1360 RDI: 00000000012f3370
RBP: 00000000012f1300 R08: 0000000000000000 R09: 0000000000000001
R10: 00007fe2c1e32dc0 R11: 0000000000000246 R12: 000000000130ef18
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000