syz-executor.3: attempt to access beyond end of device loop3: rw=0, sector=0, nr_sectors = 1 limit=0 FAT-fs (loop3): unable to read boot sector lo: entered promiscuous mode lo: left promiscuous mode watchdog: BUG: soft lockup - CPU#0 stuck for 25s! [syz-executor.0:11570] Modules linked in: irq event stamp: 3035667 hardirqs last enabled at (3035666): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3035667): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2984760): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2984763): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 11570 Comm: syz-executor.0 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:core_kernel_text+0x6/0xa0 Code: 5d e9 6e 88 62 03 48 89 ef 5d e9 95 f4 1b 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 41 54 <53> 48 89 fb 48 81 ff 00 00 00 81 72 09 48 81 ff 00 00 c0 84 72 5f RSP: 0018:ffff88806ce097e8 EFLAGS: 00000292 RAX: dffffc0000000000 RBX: ffffffff813e921f RCX: ffff88806ce098d8 RDX: 1ffff1100d9c1312 RSI: ffff88806ce098d0 RDI: ffffffff813e921f RBP: ffffffff813e921f R08: 0000000000000001 R09: ffff88806ce09878 R10: 000000000003c001 R11: 0000000000003f0d R12: ffff88806ce09900 R13: 0000000000000000 R14: ffff888015c6d280 R15: 0000000000000820 FS: 00007fecad09a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000003fcf2000 CR4: 0000000000350ef0 Call Trace: kernel_text_address+0x11/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/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:ffff888035ef7c00 EFLAGS: 00000246 RAX: 00000000002ba9df RBX: ffffea000063e540 RCX: 1ffffffff0fdca3a RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8183f876 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fda9d9 R10: ffffffff87ed4ecf R11: 00000000000007e0 R12: ffff88806ce40350 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888018f95cb8 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 security_inode_alloc+0x3e/0x130 inode_init_always_gfp+0xc27/0xf60 alloc_inode+0x89/0x240 alloc_anon_inode+0x26/0x420 ioctx_alloc+0x453/0x1da0 __x64_sys_io_setup+0xc8/0x1f0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fecafb24b19 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:00007fecad09a188 EFLAGS: 00000246 ORIG_RAX: 00000000000000ce RAX: ffffffffffffffda RBX: 00007fecafc37f60 RCX: 00007fecafb24b19 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 00000000000003ff RBP: 00007fecafb7ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2762336f R14: 00007fecad09a300 R15: 0000000000022000 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: 5d pop %rbp 1: e9 6e 88 62 03 jmpq 0x3628874 6: 48 89 ef mov %rbp,%rdi 9: 5d pop %rbp a: e9 95 f4 1b 00 jmpq 0x1bf4a4 f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 66 0f 1f 00 nopw (%rax) 28: 41 54 push %r12 * 2a: 53 push %rbx <-- trapping instruction 2b: 48 89 fb mov %rdi,%rbx 2e: 48 81 ff 00 00 00 81 cmp $0xffffffff81000000,%rdi 35: 72 09 jb 0x40 37: 48 81 ff 00 00 c0 84 cmp $0xffffffff84c00000,%rdi 3e: 72 5f jb 0x9f