ext4: Unknown parameter 'fsuuid' loop7: detected capacity change from 0 to 7 loop7: detected capacity change from 0 to 2048 ext4: Unknown parameter 'fsuuid' loop7: detected capacity change from 0 to 7 watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.4:4532] Modules linked in: irq event stamp: 28172743 hardirqs last enabled at (28172742): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (28172743): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (28165522): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (28165525): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 4532 Comm: syz-executor.4 Not tainted 6.13.0-rc3-next-20241220 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x4/0x170 Code: ff ff ff eb c7 e8 7c 35 49 03 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 10 48 89 fa RSP: 0018:ffff88806cf090c0 EFLAGS: 00000282 RAX: ffffffff845969df RBX: ffffffff815ee470 RCX: 0000000000000001 RDX: 1ffff1100d9e1224 RSI: ffffffff845969df RDI: ffff88806cf09190 RBP: ffff88806cf09160 R08: 0000000000000001 R09: ffff88806cf09108 R10: 000000000003aab6 R11: 00000000000b3f23 R12: ffff88806cf09190 R13: 0000000000000000 R14: ffff88800be2b780 R15: ffff88806cf096a8 FS: 00007fceef373700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002038c000 CR3: 000000000be0a000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_record_aux_stack+0x89/0xa0 kvfree_call_rcu+0x29/0x2f0 cfg80211_update_known_bss+0x3c9/0x11e0 __cfg80211_bss_update+0xe0/0x1fe0 cfg80211_inform_single_bss_data+0x6e5/0x1c70 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x6a0 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:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 f6 f1 a5 fc 48 89 ef e8 7e 60 a6 fc 80 e7 02 74 06 e8 b4 77 cf fc fb 65 ff 0d 54 5b 59 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f RSP: 0018:ffff888040aa79d0 EFLAGS: 00000246 RAX: 0000000001ac8961 RBX: 0000000000000246 RCX: 1ffffffff0fe89aa RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84aa4bac RBP: ffff888009f52d18 R08: 0000000000000001 R09: fffffbfff0fdfbfa R10: ffffffff87efdfd7 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888009f52d18 R14: 0000000000000000 R15: ffff888040aa7ab8 snd_seq_prioq_cell_out+0x1e7/0x350 snd_seq_check_queue+0x266/0x480 snd_seq_enqueue_event+0x1f1/0x3d0 snd_seq_client_enqueue_event.constprop.0+0x22f/0x440 snd_seq_write+0x371/0x670 vfs_write+0x2bc/0x10b0 ksys_write+0x1fe/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcef1dfdb19 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:00007fceef373188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fcef1f10f60 RCX: 00007fcef1dfdb19 RDX: 00000000ffffffc1 RSI: 00000000200001c0 RDI: 0000000000000006 RBP: 00007fcef1e57f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd95d8b3df R14: 00007fceef373300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: eb c7 jmp 0xffffffc9 2: e8 7c 35 49 03 callq 0x3493583 7: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) e: 00 00 00 11: 66 90 xchg %ax,%ax 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: 90 nop 23: f3 0f 1e fa endbr64 * 27: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2e: fc ff df 31: 55 push %rbp 32: 53 push %rbx 33: 48 89 fb mov %rdi,%rbx 36: 48 83 c7 10 add $0x10,%rdi 3a: 48 89 fa mov %rdi,%rdx