ext4: Unknown parameter 'fsuuid' loop1: detected capacity change from 0 to 512 ext4: Unknown parameter 'fsuuid' EXT4-fs (loop1): VFS: Can't find ext4 filesystem watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.7:6016] Modules linked in: irq event stamp: 2879157 hardirqs last enabled at (2879156): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2879157): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2859820): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2859825): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 6016 Comm: syz-executor.7 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+0x4f5/0x2490 Code: 4c 89 c6 48 c1 ef 03 48 c1 ee 03 0f b6 34 16 0f b6 14 17 4c 89 c7 83 e7 07 40 38 fe 40 0f 9e c7 40 84 f6 40 0f 95 c6 40 84 f7 <0f> 85 99 16 00 00 83 e0 07 38 c2 40 0f 9e c6 84 d2 0f 95 c0 40 84 RSP: 0018:ffff88806cf09538 EFLAGS: 00000246 RAX: ffffffff8684914b RBX: 0000000000000001 RCX: ffffffff86849146 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff88806cf09600 R08: ffffffff8684914a R09: ffff88806cf095e8 R10: 000000000003aab6 R11: 0000000000025323 R12: ffff88806cf09608 R13: ffff88806cf095f0 R14: ffff88806cf095e9 R15: ffff88806cf095a8 FS: 00007fa94dd94700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555732f4c98 CR3: 000000000c8be000 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 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __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 04 c6 ab ff 4d 85 ed 74 06 e8 ca 4b 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:ffff88800bef7020 EFLAGS: 00000246 RAX: 00000000002ba32f RBX: ffffea00004c0100 RCX: 1ffffffff0fe1d12 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a47796 RBP: ffff8880096d8500 R08: 0000000000000001 R09: fffffbfff0fdfbe9 R10: ffffffff87efdf4f R11: 0000000000000000 R12: ffff88806cf43530 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888013007300 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_alloc_io_end_vec+0x23/0x130 ext4_do_writepages+0x15a7/0x30d0 ext4_writepages+0x2f2/0x700 do_writepages+0x1aa/0x810 filemap_fdatawrite_wbc+0x10b/0x150 __filemap_fdatawrite_range+0xb3/0xf0 filemap_write_and_wait_range.part.0+0x89/0x110 kiocb_invalidate_pages+0xe4/0x180 __iomap_dio_rw+0xef9/0x1cf0 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0xd7f/0x18e0 vfs_write+0xbe2/0x10b0 ksys_write+0x122/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa95081eb19 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:00007fa94dd94188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa950931f60 RCX: 00007fa95081eb19 RDX: 0000000000140000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00007fa950878f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5e19630f R14: 00007fa94dd94300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 2 Comm: kthreadd 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:lock_acquire.part.0+0xf0/0x320 Code: 6a 00 81 e5 00 02 00 00 4c 89 e7 6a 00 6a 00 ff b4 24 f0 00 00 00 41 51 41 0f 94 c1 45 0f b6 c9 e8 35 a7 ff ff b8 ff ff ff ff <48> 83 c4 28 65 0f c1 05 fc 42 b2 7e 83 f8 01 0f 85 aa 01 00 00 48 RSP: 0018:ffff8880095478f8 EFLAGS: 00000086 RAX: 00000000ffffffff RBX: 1ffff110012a8f27 RCX: 1ffff110012a8f0c RDX: 1ffff110012a44c0 RSI: 0000000000000001 RDI: ffffffff87889dd8 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff0fdfbe4 R10: ffffffff87efdf27 R11: 0000000000000000 R12: ffffffff85d02018 R13: 0000000000000108 R14: 0000000000000001 R15: 0000000000000cc0 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000623000 CR3: 0000000009f1c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: _raw_spin_lock_irqsave+0x3a/0x60 __create_object+0x31/0x80 kmem_cache_alloc_noprof+0x300/0x3d0 alloc_pid+0xd6/0x1110 copy_process+0x3639/0x70e0 kernel_clone+0xeb/0x850 kernel_thread+0xc0/0x100 kthreadd+0x497/0x730 ret_from_fork+0x48/0x80 ret_from_fork_asm+0x1a/0x30 ---------------- Code disassembly (best guess): 0: 4c 89 c6 mov %r8,%rsi 3: 48 c1 ef 03 shr $0x3,%rdi 7: 48 c1 ee 03 shr $0x3,%rsi b: 0f b6 34 16 movzbl (%rsi,%rdx,1),%esi f: 0f b6 14 17 movzbl (%rdi,%rdx,1),%edx 13: 4c 89 c7 mov %r8,%rdi 16: 83 e7 07 and $0x7,%edi 19: 40 38 fe cmp %dil,%sil 1c: 40 0f 9e c7 setle %dil 20: 40 84 f6 test %sil,%sil 23: 40 0f 95 c6 setne %sil 27: 40 84 f7 test %sil,%dil * 2a: 0f 85 99 16 00 00 jne 0x16c9 <-- trapping instruction 30: 83 e0 07 and $0x7,%eax 33: 38 c2 cmp %al,%dl 35: 40 0f 9e c6 setle %sil 39: 84 d2 test %dl,%dl 3b: 0f 95 c0 setne %al 3e: 40 rex 3f: 84 .byte 0x84