watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.7:5754] Modules linked in: irq event stamp: 5858557 hardirqs last enabled at (5858556): [] asm_sysvec_irq_work+0x1a/0x20 hardirqs last disabled at (5858557): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5270260): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5270263): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 5754 Comm: syz-executor.7 Not tainted 6.4.0-rc3-next-20230522 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0xc8/0x4f0 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 76 01 00 00 8b 85 f8 03 00 00 85 c0 75 58 <65> 48 8b 1c 25 c0 8c 03 00 48 8d bb f4 03 00 00 48 b8 00 00 00 00 RSP: 0018:ffff88806ce09a98 EFLAGS: 00000202 RAX: 000000000058f86e RBX: ffff88806ce3a480 RCX: ffffffff812cd02f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81372601 RBP: ffff88800dc80000 R08: 0000000000000001 R09: fffffbfff0ef3b3d R10: ffffffff8779d9ef R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000200 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e8386a5618 CR3: 00000000145e6000 CR4: 0000000000350ef0 Call Trace: netif_receive_skb_list_internal+0x794/0xce0 napi_complete_done+0x242/0x890 e1000_clean+0x9b5/0x2510 __napi_poll+0xbd/0x6b0 net_rx_action+0x8de/0xc90 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_irq_work+0x6e/0x90 asm_sysvec_irq_work+0x1a/0x20 RIP: 0010:__schedule+0x9b1/0x2b10 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0c 19 00 00 4d 89 7c 24 10 4c 89 ef 4c 89 fe e8 f7 80 b2 fc 48 89 c7 e8 7f 69 d5 fc <48> b8 00 00 00 00 00 fc ff df 48 03 85 d8 fe ff ff 48 c7 00 00 00 RSP: 0018:ffff8880186cf5a0 EFLAGS: 00000202 RAX: 000000000014b749 RBX: 0000000000000000 RCX: ffffffff812cd02f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff844de459 RBP: ffff8880186cf6d0 R08: 0000000000000001 R09: fffffbfff0ef3b3d R10: ffffffff8779d9ef R11: 0000000000000001 R12: ffff88806ce396c0 R13: ffff88806ce3a150 R14: ffffffff852b48b0 R15: ffff88800dc80000 __cond_resched+0x46/0x70 unmap_page_range+0x1251/0x2da0 unmap_single_vma+0x19a/0x2b0 unmap_vmas+0x233/0x390 exit_mmap+0x15e/0x8b0 mmput+0xd5/0x390 do_exit+0x9c6/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x263c/0x26c0 arch_do_signal_or_restart+0x79/0x590 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f5d59cdbb19 Code: Unable to access opcode bytes at 0x7f5d59cdbaef. RSP: 002b:00007f5d57251188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000006 RBX: 00007f5d59deef60 RCX: 00007f5d59cdbb19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f5d59d35f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff8662446f R14: 00007f5d57251300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: b8 00 00 00 00 mov $0x0,%eax 5: 00 fc add %bh,%ah 7: ff (bad) 8: df 48 89 fisttps -0x77(%rax) b: fa cli c: 48 c1 ea 03 shr $0x3,%rdx 10: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 14: 84 c0 test %al,%al 16: 74 08 je 0x20 18: 3c 03 cmp $0x3,%al 1a: 0f 8e 76 01 00 00 jle 0x196 20: 8b 85 f8 03 00 00 mov 0x3f8(%rbp),%eax 26: 85 c0 test %eax,%eax 28: 75 58 jne 0x82 * 2a: 65 48 8b 1c 25 c0 8c mov %gs:0x38cc0,%rbx <-- trapping instruction 31: 03 00 33: 48 8d bb f4 03 00 00 lea 0x3f4(%rbx),%rdi 3a: 48 rex.W 3b: b8 00 00 00 00 mov $0x0,%eax