watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.6:15123] Modules linked in: irq event stamp: 3923543 hardirqs last enabled at (3923542): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3923543): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3912994): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3913021): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 15123 Comm: syz-executor.6 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0xa/0x4f0 Code: e8 bb 8a 50 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 6d f9 c8 7e 53 48 8d bd fc 03 00 00 48 b8 00 00 00 RSP: 0018:ffff88806ce090f8 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 1ffff11008154826 RSI: ffffffff85c14f00 RDI: ffff888040aa4130 RBP: ffffffffa0008000 R08: 0000000000000001 R09: ffff888040aa4138 R10: ffffffff863f274f R11: 00000000000c2f81 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff85c69668 R15: ffffffff8433b711 FS: 00007f6e60fd0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e936000 CR3: 000000003e3d0000 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_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_noprof+0x1f7/0x4b0 cfg80211_inform_single_bss_data+0x4f1/0x1c50 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+0x21ec/0x2cf0 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 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:ffff88800ea579a0 EFLAGS: 00000246 RAX: ffff88800e1e1818 RBX: ffff88800b5625c8 RCX: ffffea0000387840 RDX: 0000000000000000 RSI: ffff888008c4f780 RDI: ffffffff8183f876 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fda9d9 R10: ffffffff87ed4ecf R11: 0000000000000000 R12: 0000000000000000 R13: ffff88800ea579d8 R14: ffff88800e1e1b90 R15: ffff88800e1e1b90 kasan_quarantine_reduce+0x19c/0x230 __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 jbd2__journal_start+0x193/0x6b0 __ext4_journal_start_sb+0x183/0x600 ext4_file_write_iter+0xad2/0x1690 vfs_write+0xbcc/0x1090 ksys_write+0x122/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6e63a5ab19 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:00007f6e60fd0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6e63b6df60 RCX: 00007f6e63a5ab19 RDX: 0000000000140000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00007f6e63ab4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff080119cf R14: 00007f6e60fd0300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 netlink: 'syz-executor.4': attribute type 6 has an invalid length. netlink: 'syz-executor.7': attribute type 6 has an invalid length. netlink: 'syz-executor.7': attribute type 6 has an invalid length. netlink: 'syz-executor.7': attribute type 6 has an invalid length. netlink: 'syz-executor.4': attribute type 6 has an invalid length. netlink: 'syz-executor.4': attribute type 6 has an invalid length. netlink: 'syz-executor.4': attribute type 6 has an invalid length. loop3: detected capacity change from 0 to 10 netlink: 'syz-executor.7': attribute type 6 has an invalid length. ---------------- Code disassembly (best guess): 0: e8 bb 8a 50 00 callq 0x508ac0 5: e9 d6 fc ff ff jmpq 0xfffffce0 a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 10: 90 nop 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: f3 0f 1e fa endbr64 24: 41 56 push %r14 26: 41 55 push %r13 28: 41 54 push %r12 * 2a: 55 push %rbp <-- trapping instruction 2b: 65 48 8b 2d 6d f9 c8 mov %gs:0x7ec8f96d(%rip),%rbp # 0x7ec8f9a0 32: 7e 33: 53 push %rbx 34: 48 8d bd fc 03 00 00 lea 0x3fc(%rbp),%rdi 3b: 48 rex.W 3c: b8 .byte 0xb8 3d: 00 00 add %al,(%rax)