watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.3:15213]
Modules linked in:
irq event stamp: 59844
hardirqs last  enabled at (59843): [<ffffffff84000d02>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
hardirqs last disabled at (59844): [<ffffffff83e6275b>] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106
softirqs last  enabled at (12374): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20
softirqs last disabled at (12311): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20
CPU: 1 PID: 15213 Comm: syz-executor.3 Not tainted 5.10.228 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x45/0x60 kernel/kcov.c:202
Code: f6 c4 01 74 35 8b 82 fc 13 00 00 85 c0 74 2b 8b 82 d8 13 00 00 83 f8 02 75 20 48 8b 8a e0 13 00 00 8b 92 dc 13 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 34 c1 48 89 01 e9 e6 80 df 02 66
RSP: 0018:ffff88804be97c20 EFLAGS: 00000246
RAX: 000000000003ffff RBX: ffff8880471246f0 RCX: ffffc90003c03000
RDX: 0000000000040000 RSI: ffffffff817addbe RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88804edb0032
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880463c4050
R13: ffffffff848c5b00 R14: 1ffff11008e248e3 R15: 00000000000000e1
FS:  00007f48a1504700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdea94baff8 CR3: 000000004bd40000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 seq_has_overflowed include/linux/seq_file.h:52 [inline]
 seq_read_iter+0xc1e/0x12b0 fs/seq_file.c:275
 seq_read+0x3dd/0x5b0 fs/seq_file.c:162
 pde_read fs/proc/inode.c:321 [inline]
 proc_reg_read+0x22a/0x300 fs/proc/inode.c:333
 vfs_read+0x228/0x620 fs/read_write.c:494
 ksys_read+0x12d/0x260 fs/read_write.c:634
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x67/0xd1
RIP: 0033:0x7f48a3f8eb19
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:00007f48a1504188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f48a40a1f60 RCX: 00007f48a3f8eb19
RDX: 00000000000000e1 RSI: 00000000200002c0 RDI: 000000000000000a
RBP: 00007f48a3fe8f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda4702e4f R14: 00007f48a1504300 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:706
----------------
Code disassembly (best guess):
   0:	f6 c4 01             	test   $0x1,%ah
   3:	74 35                	je     0x3a
   5:	8b 82 fc 13 00 00    	mov    0x13fc(%rdx),%eax
   b:	85 c0                	test   %eax,%eax
   d:	74 2b                	je     0x3a
   f:	8b 82 d8 13 00 00    	mov    0x13d8(%rdx),%eax
  15:	83 f8 02             	cmp    $0x2,%eax
  18:	75 20                	jne    0x3a
  1a:	48 8b 8a e0 13 00 00 	mov    0x13e0(%rdx),%rcx
  21:	8b 92 dc 13 00 00    	mov    0x13dc(%rdx),%edx
  27:	48 8b 01             	mov    (%rcx),%rax
* 2a:	48 83 c0 01          	add    $0x1,%rax <-- trapping instruction
  2e:	48 39 c2             	cmp    %rax,%rdx
  31:	76 07                	jbe    0x3a
  33:	48 89 34 c1          	mov    %rsi,(%rcx,%rax,8)
  37:	48 89 01             	mov    %rax,(%rcx)
  3a:	e9 e6 80 df 02       	jmpq   0x2df8125
  3f:	66                   	data16