watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:7213] Modules linked in: irq event stamp: 2317189 hardirqs last enabled at (2317188): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2317189): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2298302): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2298305): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 7213 Comm: syz-executor.3 Not tainted 6.12.0-next-20241127 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire.part.0+0x10e/0x320 Code: b6 c9 e8 65 a6 ff ff b8 ff ff ff ff 48 83 c4 28 65 0f c1 05 ac 4d d2 7e 83 f8 01 0f 85 aa 01 00 00 48 85 ed 0f 85 9b 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff88806ce09258 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff1100d9c124e RCX: 1ffff1100d9c1233 RDX: 1ffff1100811b147 RSI: 0000000000000001 RDI: 000000002e1ce1be RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff0fdddec R10: ffffffff87eeef67 R11: 00000000000c3a14 R12: ffffffff85c16140 R13: 0000000000000014 R14: ffff888016744b00 R15: 0000000000000000 FS: 00007fe9eddd4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9eddb3718 CR3: 000000002acba000 CR4: 0000000000350ef0 Call Trace: sk_filter_trim_cap+0x158/0x8e0 tcp_v4_rcv+0x26a3/0x42d0 ip_protocol_deliver_rcu+0xba/0x480 ip_local_deliver_finish+0x2f0/0x500 ip_local_deliver+0x1a3/0x200 ip_sublist_rcv_finish+0x274/0x570 ip_list_rcv_finish.constprop.0+0x3fe/0x580 ip_list_rcv+0x2c5/0x3e0 __netif_receive_skb_list_core+0x695/0x8d0 netif_receive_skb_list_internal+0x6c2/0xc90 napi_gro_receive+0x98e/0xbd0 e1000_clean_rx_irq+0x7e1/0x11a0 e1000_clean+0x960/0x2540 __napi_poll+0xb9/0x540 net_rx_action+0xa08/0xe00 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:ext4_file_splice_read+0xcf/0x150 Code: 48 89 df e8 43 e4 cc ff 48 89 d9 48 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 66 48 8b 9a 80 03 00 00 <31> ff 48 d1 eb 83 e3 01 48 89 de e8 81 eb 92 ff 48 85 db 75 37 e8 RSP: 0018:ffff8880403efb28 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11001ddc470 RDX: ffff88800eee2000 RSI: 0000000000000008 RDI: ffff88800eee2380 RBP: ffff88800d24e1c0 R08: 0000000000000000 R09: ffffed1001ddc470 R10: ffff88800eee2387 R11: 00000000000c3a14 R12: ffff8880403efc38 R13: ffff88801553bc00 R14: 0000000000010000 R15: 0000000000000000 do_splice_read+0x1f8/0x2a0 splice_direct_to_actor+0x2a9/0x9d0 do_splice_direct+0x17a/0x250 do_sendfile+0xaf4/0xe60 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe9f085eb19 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:00007fe9eddd4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fe9f0971f60 RCX: 00007fe9f085eb19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000006 RBP: 00007fe9f08b8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc90735aef R14: 00007fe9eddd4300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: b6 c9 mov $0xc9,%dh 2: e8 65 a6 ff ff callq 0xffffa66c 7: b8 ff ff ff ff mov $0xffffffff,%eax c: 48 83 c4 28 add $0x28,%rsp 10: 65 0f c1 05 ac 4d d2 xadd %eax,%gs:0x7ed24dac(%rip) # 0x7ed24dc4 17: 7e 18: 83 f8 01 cmp $0x1,%eax 1b: 0f 85 aa 01 00 00 jne 0x1cb 21: 48 85 ed test %rbp,%rbp 24: 0f 85 9b 01 00 00 jne 0x1c5 * 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 31: fc ff df 34: 48 01 c3 add %rax,%rbx 37: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 3e: 48 rex.W 3f: c7 .byte 0xc7