watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.6:23192] Modules linked in: irq event stamp: 2477769 hardirqs last enabled at (2477768): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2477769): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2469586): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2469613): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 23192 Comm: syz-executor.6 Not tainted 6.12.0-next-20241118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x80 Code: c0 e9 cc d7 34 03 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 <65> 48 8b 15 40 a5 b1 7e 65 8b 05 41 a5 b1 7e a9 00 01 ff 00 74 27 RSP: 0018:ffff88806ce092d0 EFLAGS: 00000287 RAX: 0000000000000000 RBX: 0000000000161e5b RCX: ffffffff83cd90a3 RDX: ffff88803d0e0000 RSI: ffffffff83cd90ac RDI: 0000000000000004 RBP: 00000000001ac380 R08: 0000000000000000 R09: ffffed1002beb988 R10: 00000000001ac380 R11: 0000000000000002 R12: 000000000016240f R13: 0000000000162f5a R14: ffff888015f5cc40 R15: 00000000000b17ad FS: 00007f7102205700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f25d1010019 CR3: 000000003eed0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __tcp_select_window+0x46c/0x10a0 __tcp_ack_snd_check+0x23e/0xc20 tcp_rcv_established+0x8ab/0x2060 tcp_v4_do_rcv+0x5cf/0xa50 tcp_v4_rcv+0x31a0/0x42d0 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_complete_done+0x219/0x830 e1000_clean+0x9ae/0x2540 __napi_poll+0xb9/0x540 net_rx_action+0xa06/0xe00 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:qlist_free_all+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 c0 ae f1 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 9e ae f1 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff88803cfc78f0 EFLAGS: 00000286 RAX: ffff8880166134a0 RBX: ffff8880166134a0 RCX: ffff8880966134a0 RDX: ffffea00005984c0 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: 0000000000000000 R08: ffff888018bfda40 R09: 0000000000120006 R10: ffffea000062ff00 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803cfc7928 R14: ffff888018bfda40 R15: ffff888018bfdbb8 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_noprof+0x300/0x3d0 alloc_empty_file+0x76/0x1e0 path_openat+0xe1/0x2980 do_filp_open+0x1e9/0x450 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7104c8fb19 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:00007f7102205188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7104da2f60 RCX: 00007f7104c8fb19 RDX: 0000000000004042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f7104ce9f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd3bd804af R14: 00007f7102205300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 243 Comm: sshd Not tainted 6.12.0-next-20241118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88801673f8d0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8486c2bf RDX: ffffed1002beb999 RSI: 0000000000000004 RDI: ffff888015f5ccc0 RBP: ffff888015f5ccc0 R08: 0000000000000000 R09: ffffed1002beb998 R10: ffff888015f5ccc3 R11: 0000000000000001 R12: 1ffff11002ce7f1b R13: 0000000000000003 R14: ffffed1002beb998 R15: ffff88801673f908 FS: 00007f3c0303a900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b0e03b000 CR3: 000000001a110000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1de/0x270 lock_sock_nested+0x5f/0xf0 tcp_recvmsg+0xf8/0x630 inet_recvmsg+0x12b/0x6b0 sock_recvmsg+0x198/0x240 sock_read_iter+0x2bb/0x3b0 vfs_read+0xa28/0xbd0 ksys_read+0x1fe/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3c0351ce8e Code: c0 e9 b6 fe ff ff 50 48 8d 3d 6e 18 0a 00 e8 b9 e7 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 RSP: 002b:00007ffde8d831a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffde8d8723f RCX: 00007f3c0351ce8e RDX: 0000000000004000 RSI: 00007ffde8d831b0 RDI: 0000000000000004 RBP: 0000000000000004 R08: 00293803bcd73518 R09: 00007f3c03bb1000 R10: 00007f3c03bb1070 R11: 0000000000000246 R12: 000055a9113eff00 R13: 00007ffde8d831b0 R14: 0000000000000004 R15: 000055a90cf9aa80 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23230 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23230 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23255 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23269 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23281 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23290 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23305 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2576 sclass=netlink_route_socket pid=23319 comm=syz-executor.3 audit: type=1326 audit(1731952077.552:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23403 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f1b430d2b19 code=0x0 audit: type=1326 audit(1731952078.363:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23403 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f1b430d2b19 code=0x0 audit: type=1326 audit(1731952078.667:29): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23417 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f1b430d2b19 code=0x0 ---------------- Code disassembly (best guess): 0: c0 e9 cc shr $0xcc,%cl 3: d7 xlat %ds:(%rbx) 4: 34 03 xor $0x3,%al 6: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) d: 00 00 00 00 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: f3 0f 1e fa endbr64 26: 48 8b 34 24 mov (%rsp),%rsi * 2a: 65 48 8b 15 40 a5 b1 mov %gs:0x7eb1a540(%rip),%rdx # 0x7eb1a572 <-- trapping instruction 31: 7e 32: 65 8b 05 41 a5 b1 7e mov %gs:0x7eb1a541(%rip),%eax # 0x7eb1a57a 39: a9 00 01 ff 00 test $0xff0100,%eax 3e: 74 27 je 0x67