FAT-fs (loop2): bogus number of reserved sectors FAT-fs (loop2): Can't find a valid FAT filesystem blk_print_req_error: 8 callbacks suppressed I/O error, dev loop2, sector 264064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.0:6270] Modules linked in: irq event stamp: 5592265 hardirqs last enabled at (5592264): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5592265): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5585006): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (5585009): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 6270 Comm: syz-executor.0 Not tainted 6.3.0-rc6-next-20230413 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 15 22 d5 7e 83 f8 01 0f 85 8f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff88806ce09008 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff1100d9c1203 RCX: 0000000000000001 RDX: 1ffff11008e0bb33 RSI: f1fb0ed41f902fa6 RDI: 00000000e98bfff5 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff877859c7 R10: fffffbfff0ef0b38 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8560af00 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bdcf9fc628 CR3: 000000000e9d8000 CR4: 0000000000350ef0 Call Trace: perf_output_begin_forward+0xb4/0xb50 perf_event_output_forward+0x1c4/0x3c0 __perf_event_overflow+0x4c2/0x9e0 perf_swevent_event+0x4b2/0x550 perf_tp_event+0x2ce/0x10c0 perf_trace_run_bpf_submit+0xf3/0x190 perf_trace_lock+0x2d5/0x480 lock_release+0x4a9/0x680 __is_insn_slot_addr+0x147/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xff/0x4a0 kfree_skbmem+0xef/0x1b0 consume_skb+0x126/0x2e0 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__read_once_word_nocheck+0x3/0x10 Code: ff e8 71 c0 6d 00 e9 37 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 cc c5 37 03 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff88804789f3a8 EFLAGS: 00000202 RAX: 1ffff11008f13fc3 RBX: 0000000000000001 RCX: 0000000000000001 RDX: ffff88804789fd01 RSI: ffff88804789fde8 RDI: ffff88804789fde8 RBP: ffff88804789f478 R08: ffffffff8608f4bc R09: ffffffff8608f4c0 R10: 0000000000038001 R11: ffff88804789f460 R12: ffff88804789f480 R13: ffff88804789f468 R14: ffff88804789fde8 R15: ffff88804789f420 unwind_next_frame+0xdfb/0x2310 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xb90 kmem_cache_free+0xb9/0x4a0 ___pte_free_tlb+0x1d/0x110 free_pgd_range+0x7be/0x1330 free_pgtables+0x68a/0x930 exit_mmap+0x276/0x8b0 mmput+0xd5/0x390 do_exit+0x9c6/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x263c/0x26c0 arch_do_signal_or_restart+0x79/0x590 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb8431feb19 Code: Unable to access opcode bytes at 0x7fb8431feaef. RSP: 002b:00007fb840774188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: fffffffffffffff4 RBX: 00007fb843311f60 RCX: 00007fb8431feb19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fb843258f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff93f40bbf R14: 00007fb840774300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 48 83 c4 28 add $0x28,%rsp 4: 65 0f c1 05 15 22 d5 xadd %eax,%gs:0x7ed52215(%rip) # 0x7ed52221 b: 7e c: 83 f8 01 cmp $0x1,%eax f: 0f 85 8f 02 00 00 jne 0x2a4 15: 48 83 7c 24 08 00 cmpq $0x0,0x8(%rsp) 1b: 74 01 je 0x1e 1d: fb sti 1e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 25: fc ff df * 28: 48 01 c3 add %rax,%rbx <-- trapping instruction 2b: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 32: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 39: 00 3a: 48 rex.W 3b: 8b .byte 0x8b 3c: 84 .byte 0x84 3d: 24 .byte 0x24