watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.7:14049] Modules linked in: irq event stamp: 2349547 hardirqs last enabled at (2349546): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2349547): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2340282): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2340285): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 14049 Comm: syz-executor.7 Not tainted 6.13.0-rc2-next-20241216 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_switch+0x57/0x90 Code: 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 48 8b 4c 24 28 4c 89 e2 4c 89 ef 48 83 c3 01 e8 7c fd ff ff 49 39 de <75> e2 5b 5d 41 5c 41 5d 41 5e e9 fa 1c 36 03 41 bd 07 00 00 00 48 RSP: 0018:ffff88806ce09a78 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff847b33f7 RDX: ffff888014dc5340 RSI: 0000000000000002 RDI: 0000000000000005 RBP: ffffffff852a2f60 R08: 0000000000000001 R09: ffff888014dc5d80 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000005 R14: 0000000000000008 R15: ffff88806ce09d70 FS: 00007f8468cd4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff13a5cc650 CR3: 000000001bd92000 CR4: 0000000000350ef0 Call Trace: ieee80211_prepare_and_rx_handle+0x537/0x5e70 ieee80211_rx_for_interface+0x10e/0x200 ieee80211_rx_list+0x1bec/0x2840 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 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 04 ac ab ff 4d 85 ed 74 06 e8 aa 75 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:ffff888015d672d0 EFLAGS: 00000246 RAX: 0000000000227943 RBX: ffffea0000379cc0 RCX: 1ffffffff0fe04f1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a48ae6 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fde3e1 R10: ffffffff87ef1f0f R11: 0000000000000000 R12: ffff88806ce40390 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800de73250 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_noprof+0x300/0x3d0 ext4_mb_new_blocks+0x662/0x45d0 ext4_ext_map_blocks+0x1aea/0x5b10 ext4_map_blocks+0x3f1/0x1500 ext4_getblk+0x684/0x8e0 ext4_bread+0x2e/0x1a0 ext4_append+0x225/0x540 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: 0033:0x7f846b75dc27 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:00007f8468cd3fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f846b75dc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000040 RBP: 00007f8468cd4040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000040 R14: 00007f8468cd4000 R15: 0000000000000000 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: 00 00 add %al,(%rax) 2: 00 4c 8b 75 add %cl,0x75(%rbx,%rcx,4) 6: 00 31 add %dh,(%rcx) 8: db 4d 85 fisttpl -0x7b(%rbp) b: f6 74 1e 48 divb 0x48(%rsi,%rbx,1) f: 8b 74 dd 10 mov 0x10(%rbp,%rbx,8),%esi 13: 48 8b 4c 24 28 mov 0x28(%rsp),%rcx 18: 4c 89 e2 mov %r12,%rdx 1b: 4c 89 ef mov %r13,%rdi 1e: 48 83 c3 01 add $0x1,%rbx 22: e8 7c fd ff ff callq 0xfffffda3 27: 49 39 de cmp %rbx,%r14 * 2a: 75 e2 jne 0xe <-- trapping instruction 2c: 5b pop %rbx 2d: 5d pop %rbp 2e: 41 5c pop %r12 30: 41 5d pop %r13 32: 41 5e pop %r14 34: e9 fa 1c 36 03 jmpq 0x3361d33 39: 41 bd 07 00 00 00 mov $0x7,%r13d 3f: 48 rex.W