watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:16697] Modules linked in: irq event stamp: 2248737 hardirqs last enabled at (2248736): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2248737): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2227998): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2228001): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 16697 Comm: syz-executor.7 Not tainted 6.13.0-rc3-next-20241219 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xc5a/0x2490 Code: 40 84 f6 0f 95 c0 84 c2 0f 85 3a 17 00 00 48 0f bf 41 02 ba 08 00 00 00 4c 89 ff 49 01 c6 4c 89 f6 e8 ca f1 ff ff 4d 8d 4f 40 <84> c0 0f 84 a4 f6 ff ff 4c 89 f7 e8 b6 e9 ff ff 49 8d 7f 50 48 89 RSP: 0018:ffff88806cf09578 EFLAGS: 00000286 RAX: ffff88806cf0a001 RBX: 0000000000000002 RCX: 0000000000000002 RDX: ffff88806cf09c01 RSI: ffff88806cf09cb0 RDI: ffff88806cf095f8 RBP: ffff88806cf09640 R08: 0000000000000001 R09: ffff88806cf09628 R10: 000000000003aa65 R11: 00000000000ba23c R12: ffff88806cf09648 R13: ffff88806cf09630 R14: ffff88806cf09cb0 R15: ffff88806cf095e8 FS: 00007f9ad55e1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559e0a957478 CR3: 0000000031cca000 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 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/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:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 14 de ab ff 4d 85 ed 74 06 e8 7a 5d d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff88801dddf570 EFLAGS: 00000246 RAX: 000000000021b325 RBX: ffffea0000cdcb80 RCX: 1ffffffff0fe1d0a RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a45d06 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdfbe1 R10: ffffffff87efdf0f R11: 0000000000000000 R12: ffff88806cf40390 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88803372e4a0 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 kmalloc_array_noprof+0x42/0x70 ext4_find_extent+0x6fe/0x9b0 ext4_ext_map_blocks+0x1ca/0x5b10 ext4_map_query_blocks+0x82/0x2d0 ext4_map_blocks+0x282/0x1500 ext4_append+0x1b7/0x540 ext4_init_new_dir+0x21f/0x460 ext4_mkdir+0x3d2/0xb30 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: 0033:0x7f9ad806ac27 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:00007f9ad55e0fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9ad806ac27 RDX: 0000000004000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f9ad55e1040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f9ad55e1000 R15: 0000000000000000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 9pnet_fd: Insufficient options for proto=fd ---------------- Code disassembly (best guess): 0: 40 84 f6 test %sil,%sil 3: 0f 95 c0 setne %al 6: 84 c2 test %al,%dl 8: 0f 85 3a 17 00 00 jne 0x1748 e: 48 0f bf 41 02 movswq 0x2(%rcx),%rax 13: ba 08 00 00 00 mov $0x8,%edx 18: 4c 89 ff mov %r15,%rdi 1b: 49 01 c6 add %rax,%r14 1e: 4c 89 f6 mov %r14,%rsi 21: e8 ca f1 ff ff callq 0xfffff1f0 26: 4d 8d 4f 40 lea 0x40(%r15),%r9 * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 84 a4 f6 ff ff je 0xfffff6d6 32: 4c 89 f7 mov %r14,%rdi 35: e8 b6 e9 ff ff callq 0xffffe9f0 3a: 49 8d 7f 50 lea 0x50(%r15),%rdi 3e: 48 rex.W 3f: 89 .byte 0x89