watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.0:10974] Modules linked in: irq event stamp: 3617189 hardirqs last enabled at (3617188): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3617189): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3597222): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3597225): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 10974 Comm: syz-executor.0 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:unwind_next_frame+0x1690/0x2490 Code: 20 61 c5 84 c6 05 c1 56 08 05 01 e8 8a 8b 1e 00 e9 be ed ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 <0f> 85 e0 08 00 00 49 8d 7f 08 49 8b 5f 48 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88806ce09508 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff1100d9c12b8 RSI: ffff8880398a7a90 RDI: ffff88806ce095c8 RBP: 0000000000000030 R08: 0000000000000001 R09: ffff88806ce095b8 R10: 000000000003aab6 R11: 0000000000022ad1 R12: ffff88806ce095d8 R13: ffff88806ce095c0 R14: ffff8880398a7a90 R15: ffff88806ce09578 FS: 00007f4880a05700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f77b9b86000 CR3: 000000002cc24000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 mac80211_hwsim_tx_frame+0x1ee/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/0xa80 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+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 e0 6d d2 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 be 6d d2 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff8880398a79a0 EFLAGS: 00000286 RAX: ffff88800a2c0250 RBX: ffff88800a2c0250 RCX: ffff88808a2c0250 RDX: ffffea000028b000 RSI: ffff888008c4f780 RDI: ffffffff81a47796 RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0fdfbe9 R10: ffffffff87efdf4f R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880398a79d8 R14: ffff888009eaa378 R15: ffff888009eaa378 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 security_inode_init_security+0x13e/0x390 __ext4_new_inode+0x33d0/0x4b20 ext4_mkdir+0x33d/0xb30 vfs_mkdir+0x291/0x4f0 do_mkdirat+0x1a4/0x350 __x64_sys_mkdir+0xf3/0x140 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f488348ec27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 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:00007f4880a04fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f488348ec27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f4880a05040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f4880a05000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 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:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806cf099e0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff84aa53ff RDX: fffffbfff0c1bb01 RSI: 0000000000000004 RDI: ffffffff860dd800 RBP: ffffffff860dd800 R08: 0000000000000000 R09: fffffbfff0c1bb00 R10: ffffffff860dd803 R11: 0000000000000001 R12: 1ffff1100d9e133d R13: 0000000000000003 R14: fffffbfff0c1bb00 R15: ffff88806cf09a18 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe978fd8010 CR3: 0000000015dd8000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 mac80211_hwsim_tx_frame+0x1ee/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/0xa80 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:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 69 56 1a 00 0f 1f 44 00 00 fb f4 e9 1c 30 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff88800970fe68 EFLAGS: 00000206 RAX: 000000000043f435 RBX: 0000000000000001 RCX: ffffffff84a82a97 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814b32ba RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6c4a R10: ffff88806cf36253 R11: 0000000000000000 R12: ffffffff863fcc90 R13: 1ffff110012e1fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: c5 84 c6 05 c1 56 08 vshufps $0x1,0x50856c1(%rip),%ymm15,%ymm0 # 0x50856ca 7: 05 01 9: e8 8a 8b 1e 00 callq 0x1e8b98 e: e9 be ed ff ff jmpq 0xffffedd1 13: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1a: fc ff df 1d: 4c 89 ea mov %r13,%rdx 20: 48 c1 ea 03 shr $0x3,%rdx 24: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 28: 0f 85 e0 08 00 00 jne 0x90e <-- trapping instruction 2e: 49 8d 7f 08 lea 0x8(%r15),%rdi 32: 49 8b 5f 48 mov 0x48(%r15),%rbx 36: 48 rex.W 37: b8 00 00 00 00 mov $0x0,%eax 3c: 00 fc add %bh,%ah