watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:9571] Modules linked in: irq event stamp: 3226345 hardirqs last enabled at (3226344): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3226345): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3189278): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3189281): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 9571 Comm: syz-executor.5 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:stack_access_ok+0x10/0x1d0 Code: 76 00 eb da 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 <49> 89 d4 48 89 fa 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08 RSP: 0018:ffff88806cf094e8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff86773e4a RDX: 0000000000000008 RSI: ffff88806cf09668 RDI: ffff88806cf095c8 RBP: ffff88806cf09620 R08: ffffffff86773e4e R09: ffff88806cf09608 R10: 000000000003c001 R11: 0000000000003f0d R12: ffff88806cf09628 R13: ffff88806cf09610 R14: ffff88806cf09670 R15: ffff88806cf095c8 FS: 00007f5df0d68700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5df0d67fe8 CR3: 000000000714a000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0xa5c/0x2490 __unwind_start+0x517/0x7c0 arch_stack_walk+0x63/0xf0 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 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 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+0x94/0xc0 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 b4 ff ab ff 4d 85 ed 74 06 e8 ca 7f 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:ffff88801b5f7570 EFLAGS: 00000246 RAX: 00000000002deba3 RBX: ffffea0000a30000 RCX: 1ffffffff0fdca53 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8183f876 RBP: ffff88800969c500 R08: 0000000000000001 R09: fffffbfff0fda9d9 R10: ffffffff87ed4ecf R11: 0000000000000000 R12: ffff88806cf434a0 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888028c01500 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 kmalloc_array_noprof+0x42/0x70 ext4_find_extent+0x6fe/0x9b0 ext4_ext_map_blocks+0x1cc/0x5ac0 ext4_map_query_blocks+0x82/0x2d0 ext4_map_blocks+0x282/0x14d0 ext4_append+0x1b7/0x540 ext4_init_new_dir+0x262/0x4c0 ext4_mkdir+0x3d2/0xb30 vfs_mkdir+0x291/0x4f0 do_mkdirat+0x1a4/0x320 __x64_sys_mkdir+0xf3/0x140 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5df3812c27 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:00007f5df0d67fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5df3812c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f5df0d68040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f5df0d68000 R15: 0000000000000000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 76 00 jbe 0x2 2: eb da jmp 0xffffffde 4: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) a: 90 nop b: 90 nop 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: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 21: fc ff df 24: 41 56 push %r14 26: 41 55 push %r13 28: 41 54 push %r12 * 2a: 49 89 d4 mov %rdx,%r12 <-- trapping instruction 2d: 48 89 fa mov %rdi,%rdx 30: 55 push %rbp 31: 48 c1 ea 03 shr $0x3,%rdx 35: 48 89 f5 mov %rsi,%rbp 38: 53 push %rbx 39: 48 89 fb mov %rdi,%rbx 3c: 48 83 ec 08 sub $0x8,%rsp