watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.0:11292] Modules linked in: irq event stamp: 3186051 hardirqs last enabled at (3186050): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3186051): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3177912): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3177929): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 11292 Comm: syz-executor.0 Not tainted 6.12.0-next-20241119 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0x4/0x4f0 Code: 00 e9 e0 fb ff ff e8 ab 09 51 00 e9 d6 fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <41> 56 41 55 41 54 55 65 48 8b 2d bd b8 c8 7e 53 48 8d bd fc 03 00 RSP: 0018:ffff88806cf09030 EFLAGS: 00000286 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 1ffff110078274b6 RSI: ffffffff85c16140 RDI: ffff88803c13a5b0 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88803c13a5b8 R10: ffffffff863f9317 R11: 00000000000c3977 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff85c6db68 R15: ffff88806cf096a8 FS: 00007f4eb38da700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557cb8ec58 CR3: 000000000cabe000 CR4: 0000000000350ef0 Call Trace: __is_insn_slot_addr+0x140/0x290 kernel_text_address+0x48/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 __kasan_record_aux_stack+0x8c/0xa0 kvfree_call_rcu+0x29/0x980 cfg80211_update_known_bss+0x3c9/0x11e0 __cfg80211_bss_update+0xe0/0x1fe0 cfg80211_inform_single_bss_data+0x6e2/0x1c50 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x690 ieee80211_bss_info_update+0x2f6/0xa90 ieee80211_scan_rx+0x474/0xac0 ieee80211_rx_list+0x1e38/0x2840 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 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+0x28/0x160 Code: 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 48 8b 18 <48> 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff888037b27250 EFLAGS: 00000246 RAX: ffff88800d650480 RBX: ffff88801b1f0bd0 RCX: ffffea0000359400 RDX: 0000000000000000 RSI: ffff888008c41780 RDI: ffffffff8184a3f6 RBP: ffff888008c41780 R08: 0000000000000001 R09: fffffbfff0fdd9f1 R10: ffffffff87eecf8f R11: 00000000000007e0 R12: 0000000000000000 R13: ffff888037b27288 R14: ffff8880070b4940 R15: ffff8880070b4940 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 ip_options_get+0xa9/0x440 ip_cmsg_send+0x88c/0xa50 udp_sendmsg+0x1335/0x22b0 udpv6_sendmsg+0x1730/0x2920 inet6_sendmsg+0x109/0x150 ____sys_sendmsg+0x80c/0xc80 ___sys_sendmsg+0x110/0x1b0 __sys_sendmmsg+0x1f6/0x420 __x64_sys_sendmmsg+0x9d/0x110 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4eb6364b19 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:00007f4eb38da188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f4eb6477f60 RCX: 00007f4eb6364b19 RDX: 0000000000000002 RSI: 0000000020009ac0 RDI: 0000000000000006 RBP: 00007f4eb63bef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7647c58f R14: 00007f4eb38da300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 audit: type=1401 audit(1732034008.139:14): op=setxattr invalid_context=02000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022050820000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 audit: type=1401 audit(1732034009.819:15): op=setxattr invalid_context=02000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022050820000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 audit: type=1401 audit(1732034010.553:16): op=setxattr invalid_context=02000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022050820000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 5152 process 'syz-executor.5' launched './file1' with NULL argv: empty string added loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e9 e0 fb ff ff jmpq 0xfffffbe5 5: e8 ab 09 51 00 callq 0x5109b5 a: e9 d6 fc ff ff jmpq 0xfffffce5 f: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 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: 90 nop 23: 90 nop 24: 90 nop 25: f3 0f 1e fa endbr64 * 29: 41 56 push %r14 <-- trapping instruction 2b: 41 55 push %r13 2d: 41 54 push %r12 2f: 55 push %rbp 30: 65 48 8b 2d bd b8 c8 mov %gs:0x7ec8b8bd(%rip),%rbp # 0x7ec8b8f5 37: 7e 38: 53 push %rbx 39: 48 rex.W 3a: 8d .byte 0x8d 3b: bd .byte 0xbd 3c: fc cld 3d: 03 00 add (%rax),%eax