syz-executor.3: attempt to access beyond end of device loop3: rw=4096, sector=2, nr_sectors = 2 limit=0 EXT4-fs (loop3): unable to read superblock EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.5:10522] Modules linked in: irq event stamp: 3286433 hardirqs last enabled at (3286432): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3286433): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3234920): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3234937): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 10522 Comm: syz-executor.5 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_access_ok+0x46/0x1d0 Code: 89 f5 53 48 89 fb 48 83 ec 08 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 4b 01 00 00 8b 0b 85 c9 74 65 48 b8 00 00 00 00 00 fc ff df <48> 8d 7b 08 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 30 01 00 00 48 RSP: 0018:ffff88806cf09780 EFLAGS: 00000202 RAX: dffffc0000000000 RBX: ffff88806cf09828 RCX: 0000000000000002 RDX: 1ffff1100d9e1305 RSI: ffff88806cf09ff0 RDI: ffff88806cf09828 RBP: ffff88806cf09ff0 R08: ffffffff86796afe R09: ffff88806cf09868 R10: 000000000003c001 R11: 000000000000804d R12: 0000000000000008 R13: ffff88806cf09870 R14: ffff88806cf09ff8 R15: ffff88806cf09828 FS: 00007faaf7340700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fe3c5349c0 CR3: 000000001b4ea000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0xa5c/0x2490 arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 __kasan_record_aux_stack+0x8c/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kmem_cache_free+0x2ae/0x470 kfree_skbmem+0x18a/0x1f0 consume_skb+0xdd/0x160 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 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+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 46 6d a9 fc 48 89 ef e8 4e e0 a9 fc 80 e7 02 74 06 e8 b4 35 d3 fc fb 65 ff 0d 54 dc 7c 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f RSP: 0018:ffff88802e6b7590 EFLAGS: 00000246 RAX: 0000000000315c77 RBX: 0000000000000246 RCX: 1ffffffff0fdfecf RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8486ca6c RBP: ffff888009409e40 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 00000000ffffffff R12: 0000000000000000 R13: 0000000000000000 R14: ffff88800969f500 R15: 0000000000000246 __put_partials+0xc4/0x110 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 __register_sysctl_table+0xb6/0x16d0 devinet_init_net+0x378/0x910 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e90 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faaf9dcab19 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:00007faaf7340188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007faaf9eddf60 RCX: 00007faaf9dcab19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007faaf9e24f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe68edf46f R14: 00007faaf7340300 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: 89 f5 mov %esi,%ebp 2: 53 push %rbx 3: 48 89 fb mov %rdi,%rbx 6: 48 83 ec 08 sub $0x8,%rsp a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax e: 84 c0 test %al,%al 10: 74 08 je 0x1a 12: 3c 03 cmp $0x3,%al 14: 0f 8e 4b 01 00 00 jle 0x165 1a: 8b 0b mov (%rbx),%ecx 1c: 85 c9 test %ecx,%ecx 1e: 74 65 je 0x85 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 8d 7b 08 lea 0x8(%rbx),%rdi <-- trapping instruction 2e: 48 89 fa mov %rdi,%rdx 31: 48 c1 ea 03 shr $0x3,%rdx 35: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 39: 0f 85 30 01 00 00 jne 0x16f 3f: 48 rex.W