watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:14296] Modules linked in: irq event stamp: 4469953 hardirqs last enabled at (4469952): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4469953): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4441410): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4441413): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 14296 Comm: syz-executor.0 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:unwind_next_frame+0x36d/0x2490 Code: fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e f7 16 00 00 41 c7 07 00 00 00 00 31 c0 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e <41> 5f e9 dc de 6f 03 48 81 f9 00 e0 d4 86 0f 83 cb 02 00 00 48 89 RSP: 0018:ffff88806ce09028 EFLAGS: 00000296 RAX: 0000000000000001 RBX: ffffffff813e8f70 RCX: 0000000000000001 RDX: ffff88806ce09ca0 RSI: ffff88806ce09c68 RDI: ffff88806ce09048 RBP: ffff88806ce090d0 R08: 0000000000000001 R09: ffff88806ce09078 R10: 000000000003c001 R11: 00000000000b7660 R12: ffff88806ce09100 R13: 0000000000000000 R14: ffff88803b9d8000 R15: ffff88806ce09038 FS: 00007f2a5e9d5700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6acd2c09d0 CR3: 000000002ac54000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 __kasan_record_aux_stack+0x8c/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kfree+0x28e/0x480 ieee80211_inform_bss+0x7f6/0x10b0 cfg80211_inform_single_bss_data+0x7fe/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:kmem_cache_alloc_noprof+0xf8/0x3d0 Code: ff 41 8b 44 24 28 49 8b 34 24 48 8d 4a 40 49 8b 1c 00 4c 89 c0 65 48 0f c7 0e 75 a2 41 8b 44 24 28 0f 0d 0c 03 4c 89 44 24 20 <0f> 1f 44 00 00 0f 1f 44 00 00 45 89 ea 41 c1 ea 08 41 83 e2 01 44 RSP: 0018:ffff888032bdf5c0 EFLAGS: 00000246 RAX: ffff88801afa95c8 RBX: ffffea0000363100 RCX: 1ffffffff0fdb4a5 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8183d861 RBP: ffff888032bdf620 R08: ffff88801afa95c8 R09: fffffbfff0fda9d5 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888008c4f780 R13: 0000000000092cc0 R14: 00000000000000e8 R15: ffffffff818e5a3f __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 __kmalloc_noprof+0x37e/0x4b0 __register_sysctl_table+0xd51/0x16d0 ipv6_sysctl_net_init+0x136/0x2c0 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e00 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2a6145fb19 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:00007f2a5e9d5188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f2a61572f60 RCX: 00007f2a6145fb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f2a614b9f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe20be6f9f R14: 00007f2a5e9d5300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 16 prio class 0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 buffer_io_error: 3 callbacks suppressed Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 6 prio class 0 Buffer I/O error on dev sr0, logical block 2, async page read Buffer I/O error on dev sr0, logical block 3, async page read Buffer I/O error on dev sr0, logical block 4, async page read Buffer I/O error on dev sr0, logical block 5, async page read Buffer I/O error on dev sr0, logical block 6, async page read Buffer I/O error on dev sr0, logical block 7, async page read ---------------- Code disassembly (best guess): 0: fa cli 1: 48 c1 ea 03 shr $0x3,%rdx 5: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 9: 84 c0 test %al,%al b: 74 08 je 0x15 d: 3c 03 cmp $0x3,%al f: 0f 8e f7 16 00 00 jle 0x170c 15: 41 c7 07 00 00 00 00 movl $0x0,(%r15) 1c: 31 c0 xor %eax,%eax 1e: 48 83 c4 38 add $0x38,%rsp 22: 5b pop %rbx 23: 5d pop %rbp 24: 41 5c pop %r12 26: 41 5d pop %r13 28: 41 5e pop %r14 * 2a: 41 5f pop %r15 <-- trapping instruction 2c: e9 dc de 6f 03 jmpq 0x36fdf0d 31: 48 81 f9 00 e0 d4 86 cmp $0xffffffff86d4e000,%rcx 38: 0f 83 cb 02 00 00 jae 0x309 3e: 48 rex.W 3f: 89 .byte 0x89