watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:17175] Modules linked in: irq event stamp: 2485549 hardirqs last enabled at (2485548): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2485549): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2484520): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2484531): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 17175 Comm: syz-executor.0 Not tainted 6.13.0-rc1-next-20241206 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_stack_walk+0xa0/0xf0 Code: 03 84 c0 74 2a 48 8d bd 68 ff ff ff e8 69 80 07 00 8b 85 68 ff ff ff 85 c0 74 14 48 8d bd 68 ff ff ff e8 c3 7d 07 00 48 89 c6 <48> 85 c0 75 ca 48 8b 45 d8 65 48 2b 04 25 28 00 00 00 75 32 48 83 RSP: 0018:ffff88806ce09658 EFLAGS: 00000246 RAX: ffffffff81a4994e RBX: ffffffff815f0170 RCX: 0000000000000001 RDX: 1ffff1100d9c12d6 RSI: ffffffff81a4994e RDI: ffffffff81a4994e RBP: ffff88806ce096f0 R08: 0000000000000001 R09: ffff88806ce09698 R10: 000000000003a7a3 R11: 00000000000252c1 R12: ffff88806ce09720 R13: 0000000000000000 R14: ffff88800c23d340 R15: 0000000000092820 FS: 00007fd5be065700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f676a8ef018 CR3: 0000000029ddc000 CR4: 0000000000350ef0 Call Trace: stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/0x370 ndisc_alloc_skb+0x133/0x330 ndisc_send_rs+0x223/0x540 addrconf_rs_timer+0x2e7/0x7a0 call_timer_fn+0x198/0x5d0 __run_timers+0x669/0x930 run_timer_softirq+0x117/0x210 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:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 f4 a9 ab ff 4d 85 ed 74 06 e8 da 71 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff88802f8ffb00 EFLAGS: 00000246 RAX: 000000000025e931 RBX: ffffea0000386500 RCX: 1ffffffff0fdfcc7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a47976 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fddbe9 R10: ffffffff87eedf4f R11: 0000000000000000 R12: ffff88806ce40390 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800e194b90 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 __kmalloc_noprof+0x37e/0x4b0 security_sk_alloc+0x101/0x160 sk_prot_alloc+0xa9/0x280 sk_alloc+0x34/0xb50 inet6_create+0x340/0x1200 __sock_create+0x369/0x810 __sys_socket+0x147/0x260 __x64_sys_socket+0x73/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd5c0aefb19 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:00007fd5be065188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fd5c0c02f60 RCX: 00007fd5c0aefb19 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000000a RBP: 00007fd5c0b49f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0d1ae08f R14: 00007fd5be065300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 audit: type=1400 audit(1733527264.374:15): avc: denied { read } for pid=17277 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop4: detected capacity change from 0 to 4096 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. SELinux: security_context_str_to_sid (root) failed with errno=-22 SELinux: security_context_str_to_sid (root) failed with errno=-22 loop4: detected capacity change from 0 to 4096 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. SELinux: security_context_str_to_sid (root) failed with errno=-22 SELinux: security_context_str_to_sid (root) failed with errno=-22 loop4: detected capacity change from 0 to 4096 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. SELinux: security_context_str_to_sid (root) failed with errno=-22 SELinux: security_context_str_to_sid (root) failed with errno=-22 loop4: detected capacity change from 0 to 4096 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list SELinux: security_context_str_to_sid (root) failed with errno=-22 SELinux: security_context_str_to_sid (root) failed with errno=-22 ---------------- Code disassembly (best guess): 0: 03 84 c0 74 2a 48 8d add -0x72b7d58c(%rax,%rax,8),%eax 7: bd 68 ff ff ff mov $0xffffff68,%ebp c: e8 69 80 07 00 callq 0x7807a 11: 8b 85 68 ff ff ff mov -0x98(%rbp),%eax 17: 85 c0 test %eax,%eax 19: 74 14 je 0x2f 1b: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 22: e8 c3 7d 07 00 callq 0x77dea 27: 48 89 c6 mov %rax,%rsi * 2a: 48 85 c0 test %rax,%rax <-- trapping instruction 2d: 75 ca jne 0xfffffff9 2f: 48 8b 45 d8 mov -0x28(%rbp),%rax 33: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax 3a: 00 00 3c: 75 32 jne 0x70 3e: 48 rex.W 3f: 83 .byte 0x83