watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.7:11945] Modules linked in: irq event stamp: 2554407 hardirqs last enabled at (2554406): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2554407): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2547032): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2547035): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 11945 Comm: syz-executor.7 Not tainted 6.12.0-next-20241125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:debug_lockdep_rcu_enabled+0x26/0x40 Code: 90 90 90 90 f3 0f 1e fa 8b 05 4a ad ba 01 85 c0 74 20 8b 05 20 ba ba 01 85 c0 74 16 65 48 8b 05 20 b6 7e 7b 8b 80 3c 0a 00 00 <85> c0 0f 94 c0 0f b6 c0 e9 6d 48 02 00 66 2e 0f 1f 84 00 00 00 00 RSP: 0018:ffff88806ce09698 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff8880298b7c4e RCX: ffffffff83c2ddea RDX: ffff88803dec1b80 RSI: ffffffff83c2e4a0 RDI: ffffffff886a52d8 RBP: ffff88801aab3a00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000c39c9 R12: 0000000000000014 R13: ffffffff886a5040 R14: ffff88801aab3ab4 R15: 0000000000000000 FS: 00007fd808d58700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32626000 CR3: 000000003d954000 CR4: 0000000000350ef0 Call Trace: ip_local_deliver_finish+0x2f5/0x500 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+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:__slab_free+0x7f/0x310 Code: c1 e8 1f 4d 85 ed 66 89 5c 24 58 41 89 c6 41 0f 94 c2 66 85 db 74 05 45 84 d2 74 05 45 84 f6 74 42 41 8b 7f 08 4c 8b 4c 24 58 <4c> 89 ea 4c 89 e6 4c 8b 44 24 20 e8 91 a0 ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff88800d23fb60 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000d000c RCX: 00000000000d000d RDX: ffff88800d9b1818 RSI: ffffea0000366c40 RDI: 0000000000089800 RBP: ffff88800d23fc00 R08: 0000000000000001 R09: 00000000000d000c R10: ffffea0000366c01 R11: 0000000000000000 R12: ffffea0000366c40 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888008c4f780 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 security_file_alloc+0x35/0x130 init_file+0x95/0x490 alloc_empty_file+0x94/0x1e0 alloc_file_pseudo+0x139/0x200 sock_alloc_file+0x53/0x1d0 __sys_socket+0x1bc/0x260 __x64_sys_socket+0x73/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd80b7e2b19 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:00007fd808d58188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fd80b8f5f60 RCX: 00007fd80b7e2b19 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 00007fd80b83cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce3d524cf R14: 00007fd808d58300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-next-20241125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:get_jiffies_update+0x69/0x200 Code: e8 fc bc 0d 00 9c 5b fa 81 e3 00 02 00 00 31 ff 48 89 de e8 49 c0 0d 00 48 85 db 0f 85 0d 01 00 00 e8 db bc 0d 00 ff 74 24 38 <45> 31 c9 31 d2 41 b8 01 00 00 00 b9 02 00 00 00 31 f6 48 c7 c7 88 RSP: 0018:ffff88806cf09cc0 EFLAGS: 00000046 RAX: 0000000080010001 RBX: 0000000000000000 RCX: ffffffff81444537 RDX: ffff888009615280 RSI: ffffffff81444545 RDI: 0000000000000007 RBP: ffff88806cf2d8a8 R08: 0000000000000000 R09: ffffed100d9e788d R10: 0000000000000000 R11: ffff88806cf09ff8 R12: fffffbfff0b42050 R13: 1ffffffff0b42040 R14: ffff88806cf09d38 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00115c008 CR3: 0000000019364000 CR4: 0000000000350ef0 Call Trace: tmigr_requires_handle_remote+0xeb/0x400 update_process_times+0xd6/0x210 tick_nohz_handler+0x414/0x6d0 __hrtimer_run_queues+0x57c/0xa70 hrtimer_interrupt+0x369/0x830 __sysvec_apic_timer_interrupt+0xc2/0x330 sysvec_apic_timer_interrupt+0x6b/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d e9 80 3d 00 0f 1f 44 00 00 fb f4 e9 7c 2e 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff8880096cfe68 EFLAGS: 00000206 RAX: 00000000001049f9 RBX: 0000000000000001 RCX: ffffffff8484faf7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812b10ea RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6cba R10: ffff88806cf365d3 R11: 0000000000000000 R12: ffffffff863f9d10 R13: 1ffff110012d9fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. tmpfs: Bad value for 'mpol' EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. tmpfs: Bad value for 'mpol' mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium tmpfs: Bad value for 'mpol' mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. tmpfs: Bad value for 'mpol' cgroup: Unknown subsys name 'pcr' tmpfs: Bad value for 'mpol' cgroup: Unknown subsys name 'pcr' cgroup: Unknown subsys name 'pcr' cgroup: Unknown subsys name 'pcr' cgroup: Unknown subsys name 'pcr' process 'syz-executor.4' launched './file1' with NULL argv: empty string added ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: f3 0f 1e fa endbr64 8: 8b 05 4a ad ba 01 mov 0x1baad4a(%rip),%eax # 0x1baad58 e: 85 c0 test %eax,%eax 10: 74 20 je 0x32 12: 8b 05 20 ba ba 01 mov 0x1baba20(%rip),%eax # 0x1baba38 18: 85 c0 test %eax,%eax 1a: 74 16 je 0x32 1c: 65 48 8b 05 20 b6 7e mov %gs:0x7b7eb620(%rip),%rax # 0x7b7eb644 23: 7b 24: 8b 80 3c 0a 00 00 mov 0xa3c(%rax),%eax * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 0f 94 c0 sete %al 2f: 0f b6 c0 movzbl %al,%eax 32: e9 6d 48 02 00 jmpq 0x248a4 37: 66 data16 38: 2e cs 39: 0f .byte 0xf 3a: 1f (bad) 3b: 84 00 test %al,(%rax) 3d: 00 00 add %al,(%rax)