watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.6:289266]
Modules linked in:
irq event stamp: 49068
hardirqs last  enabled at (49067): [<ffffffff84000c82>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
hardirqs last disabled at (49068): [<ffffffff83e089db>] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095
softirqs last  enabled at (806): [<ffffffff84001002>] asm_call_irq_on_stack+0x12/0x20
softirqs last disabled at (795): [<ffffffff84001002>] asm_call_irq_on_stack+0x12/0x20
CPU: 1 PID: 289266 Comm: syz-executor.6 Not tainted 5.10.161 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:write_comp_data+0x2f/0x80 kernel/kcov.c:218
Code: 05 46 48 c2 7e 65 48 8b 34 25 80 6f 02 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 64 13 00 00 85 c0 74 4f 8b 86 40 13 00 00 <83> f8 03 75 44 48 8b 86 48 13 00 00 8b b6 44 13 00 00 4c 8b 00 48
RSP: 0018:ffff88805368fa58 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff82259d01
RDX: 0000000000000000 RSI: ffff888052e84c80 RDI: 0000000000000001
RBP: ffff888052e84c80 R08: 0000000000000000 R09: ffff88803fc0c4cf
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff88803fc0c000 R14: 0000000000000000 R15: ffff88802dccfe20
FS:  00007f4404b9e700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31a21000 CR3: 0000000052dcc000 CR4: 0000000000350ee0
Call Trace:
 paste_selection+0x2f1/0x4a0 drivers/tty/vt/selection.c:400
 tioclinux+0x499/0x5b0 drivers/tty/vt/vt.c:3205
 vt_ioctl+0x1ee5/0x2c90 drivers/tty/vt/vt_ioctl.c:762
 tty_ioctl+0x862/0x1840 drivers/tty/tty_io.c:2742
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f4407628b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4404b9e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f440773bf60 RCX: 00007f4407628b19
RDX: 0000000020000180 RSI: 000000000000541c RDI: 0000000000000007
RBP: 00007f4407682f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7ba3255f R14: 00007f4404b9e300 R15: 0000000000022000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:689
----------------
Code disassembly (best guess):
   0:	05 46 48 c2 7e       	add    $0x7ec24846,%eax
   5:	65 48 8b 34 25 80 6f 	mov    %gs:0x26f80,%rsi
   c:	02 00
   e:	a9 00 01 ff 00       	test   $0xff0100,%eax
  13:	74 0f                	je     0x24
  15:	f6 c4 01             	test   $0x1,%ah
  18:	74 59                	je     0x73
  1a:	8b 86 64 13 00 00    	mov    0x1364(%rsi),%eax
  20:	85 c0                	test   %eax,%eax
  22:	74 4f                	je     0x73
  24:	8b 86 40 13 00 00    	mov    0x1340(%rsi),%eax
* 2a:	83 f8 03             	cmp    $0x3,%eax <-- trapping instruction
  2d:	75 44                	jne    0x73
  2f:	48 8b 86 48 13 00 00 	mov    0x1348(%rsi),%rax
  36:	8b b6 44 13 00 00    	mov    0x1344(%rsi),%esi
  3c:	4c 8b 00             	mov    (%rax),%r8
  3f:	48                   	rex.W