loop3: detected capacity change from 0 to 512 EXT4-fs error (device loop3): __ext4_fill_super:5497: inode #2: comm syz-executor.3: iget: special inode unallocated EXT4-fs (loop3): get root inode failed EXT4-fs (loop3): mount failed watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:20497] Modules linked in: irq event stamp: 1982457 hardirqs last enabled at (1982456): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (1982457): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (1969594): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1969605): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 20497 Comm: syz-executor.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:__orc_find+0x6f/0xf0 Code: 77 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 RSP: 0018:ffff88806cf09600 EFLAGS: 00000212 RAX: 1ffffffff0c90afe RBX: ffffffff864857f0 RCX: ffffffff8160362b RDX: 0000000000000000 RSI: ffffffff867db724 RDI: ffffffff864857f0 RBP: ffffffff864857f0 R08: ffffffff867db724 R09: ffff88806cf096f8 R10: 000000000003aab6 R11: 0000000000012ed2 R12: ffffffff864857f0 R13: ffffffff864857f0 R14: ffffffff864857f0 R15: dffffc0000000000 FS: 00007f66c0bea700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c825000 CR3: 00000000368f0000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b7/0x2490 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_node_noprof+0x14c/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 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:ffff888040c57ab0 EFLAGS: 00000246 RAX: 00000000001e0dc3 RBX: ffffea0001034c00 RCX: 1ffffffff0fe1cf9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a47796 RBP: ffff888009404280 R08: 0000000000000001 R09: fffffbfff0fdfbe9 R10: ffffffff87efdf4f R11: 0000000000000000 R12: ffff88806cf420d0 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888040d30000 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 __kmalloc_noprof+0x37e/0x4b0 __list_lru_init+0xeb/0x4a0 alloc_super+0x938/0xb80 sget_fc+0xfe/0xb80 get_tree_nodev+0x28/0x190 vfs_get_tree+0x93/0x340 vfs_cmd_create+0xd7/0x2a0 __do_sys_fsconfig+0xa35/0xb50 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f66c3674b19 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:00007f66c0bea188 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007f66c3787f60 RCX: 00007f66c3674b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 RBP: 00007f66c36cef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc195b933f R14: 00007f66c0bea300 R15: 0000000000022000 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: 77 4d ja 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 50 jne 0x8b 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1