loop1: detected capacity change from 0 to 10 syz-executor.3: attempt to access beyond end of device loop3: rw=0, sector=64, nr_sectors = 2 limit=0 isofs_fill_super: bread failed, dev=loop3, iso_blknum=16, block=32 watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.7:8377] Modules linked in: irq event stamp: 3578067 hardirqs last enabled at (3578066): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3578067): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3574204): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3574213): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 8377 Comm: syz-executor.7 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:kasan_unpoison+0x43/0x60 Code: 31 d2 48 89 fb 48 83 c6 01 e8 39 ff ff ff 48 89 e8 83 e0 07 74 14 48 ba 00 00 00 00 00 fc ff df 48 01 eb 48 c1 eb 03 88 04 13 <5b> 5d e9 16 2f f9 02 90 0f 0b 90 e9 0d 2f f9 02 66 66 2e 0f 1f 84 RSP: 0018:ffff88806ce09400 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880158c8250 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed1002b19067 RBP: 00000000000000e8 R08: 0000000000000006 R09: 0000000000000002 R10: ffffed1002b1904a R11: 00000000ffffffff R12: ffff8880158c8250 R13: 0000000000092820 R14: 00000000000000e8 R15: 0000000000092820 FS: 00007fa16e752700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f938478d998 CR3: 000000004074e000 CR4: 0000000000350ef0 Call Trace: __kasan_slab_alloc+0x30/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 __kmalloc_noprof+0x37e/0x4b0 cfg80211_inform_single_bss_data+0x4f1/0x1c50 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x690 ieee80211_bss_info_update+0x2f6/0xa90 ieee80211_scan_rx+0x474/0xac0 ieee80211_rx_list+0x21ec/0x2cf0 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:in_gate_area_no_mm+0x25/0x80 Code: 90 90 90 90 90 66 0f 1f 00 41 54 55 53 48 89 fb e8 40 e3 50 00 8b 2d ba 97 7c 04 bf 02 00 00 00 89 ee e8 5e e6 50 00 83 fd 02 <74> 24 e8 24 e3 50 00 48 81 e3 00 f0 ff ff 48 c7 c7 00 00 60 ff 48 RSP: 0018:ffff8880323870c0 EFLAGS: 00000297 RAX: 0000000000000002 RBX: 00007fa1711dcb19 RCX: ffffffff810098f2 RDX: ffff88801890d280 RSI: 0000000000000002 RDI: 0000000000000005 RBP: 0000000000000001 R08: ffffffff86bee0fa R09: ffff888032387178 R10: 0000000000000001 R11: 00000000000c2f81 R12: ffff888032387200 R13: 0000000000000000 R14: ffff88801890d280 R15: ffff88800706e500 core_kernel_text+0x24/0xa0 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 kasan_save_stack+0x24/0x50 __kasan_record_aux_stack+0x8c/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kfree+0x28e/0x480 __free_slab+0x100/0x120 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 ptlock_alloc+0x21/0x70 pte_alloc_one+0x78/0x320 __pte_alloc+0x6d/0x330 copy_page_range+0x2845/0x4cf0 copy_process+0x7d17/0x8e00 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa1711dcb19 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:00007fa16e752188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fa1712eff60 RCX: 00007fa1711dcb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000640 RBP: 00007fa171236f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd4e83b2f R14: 00007fa16e752300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. syz-executor.3: attempt to access beyond end of device loop3: rw=0, sector=64, nr_sectors = 2 limit=0 loop1: detected capacity change from 0 to 10 isofs_fill_super: bread failed, dev=loop3, iso_blknum=16, block=32 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. syz-executor.3: attempt to access beyond end of device loop3: rw=0, sector=64, nr_sectors = 2 limit=0 isofs_fill_super: bread failed, dev=loop3, iso_blknum=16, block=32 audit: type=1400 audit(1729126633.926:10): avc: denied { write } for pid=8450 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop1: detected capacity change from 0 to 10 ---------------- Code disassembly (best guess): 0: 31 d2 xor %edx,%edx 2: 48 89 fb mov %rdi,%rbx 5: 48 83 c6 01 add $0x1,%rsi 9: e8 39 ff ff ff callq 0xffffff47 e: 48 89 e8 mov %rbp,%rax 11: 83 e0 07 and $0x7,%eax 14: 74 14 je 0x2a 16: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1d: fc ff df 20: 48 01 eb add %rbp,%rbx 23: 48 c1 eb 03 shr $0x3,%rbx 27: 88 04 13 mov %al,(%rbx,%rdx,1) * 2a: 5b pop %rbx <-- trapping instruction 2b: 5d pop %rbp 2c: e9 16 2f f9 02 jmpq 0x2f92f47 31: 90 nop 32: 0f 0b ud2 34: 90 nop 35: e9 0d 2f f9 02 jmpq 0x2f92f47 3a: 66 data16 3b: 66 data16 3c: 2e cs 3d: 0f .byte 0xf 3e: 1f (bad) 3f: 84 .byte 0x84