watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.4:6919] Modules linked in: irq event stamp: 2474343 hardirqs last enabled at (2474342): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2474343): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2435270): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2435273): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 6919 Comm: syz-executor.4 Not tainted 6.12.0-next-20241122 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xe/0x170 Code: 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 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88806ce097d0 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: ffffffff813f2420 RCX: 0000000000000001 RDX: 1ffff1100d9c1306 RSI: ffffffff81a0a479 RDI: ffff88806ce098a0 RBP: ffff88806ce09870 R08: 0000000000000001 R09: ffff88806ce09818 R10: 000000000003c001 R11: 000000000002986a R12: ffff88806ce098a0 R13: 0000000000000000 R14: ffff888016e3d280 R15: ffff88803a6ac300 FS: 00007fbee30ae700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4292f7d718 CR3: 000000003da98000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 __kasan_record_aux_stack+0x8c/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kmem_cache_free+0x2ae/0x470 skb_release_data+0x814/0x990 consume_skb+0xd0/0x160 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 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:ffff88802c347638 EFLAGS: 00000246 RAX: ffff8880130bc000 RBX: ffff88803b54c000 RCX: ffffea00004c2f00 RDX: 0000000000000000 RSI: ffff8880096a1280 RDI: 0000000000080000 RBP: ffff8880096a1280 R08: ffff88800c48e700 R09: 000000000015000f R10: ffffea0000312300 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88802c347670 R14: ffff88800c48e700 R15: ffff88800c48e700 kasan_quarantine_reduce+0x19f/0x240 __kasan_kmalloc+0x6f/0x90 __iomap_dio_rw+0x274/0x1cf0 iomap_dio_rw+0x40/0xa0 ext4_file_read_iter+0x2f6/0x4a0 copy_splice_read+0x5c6/0xb70 do_splice_read+0x22f/0x2a0 splice_direct_to_actor+0x2a9/0x9d0 do_splice_direct+0x17a/0x250 do_sendfile+0xaf4/0xe60 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbee5b7ab19 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:00007fbee30ae188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fbee5c8e0e0 RCX: 00007fbee5b7ab19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007fbee5bd4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000100000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7e2a8cbf R14: 00007fbee30ae300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 7: 00 00 00 a: 66 90 xchg %ax,%ax c: 90 nop d: 90 nop e: 90 nop f: 90 nop 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: f3 0f 1e fa endbr64 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: 48 89 fb mov %rdi,%rbx 2f: 48 83 c7 10 add $0x10,%rdi 33: 48 89 fa mov %rdi,%rdx 36: 48 c1 ea 03 shr $0x3,%rdx 3a: 48 83 ec 08 sub $0x8,%rsp 3e: 0f .byte 0xf 3f: b6 .byte 0xb6