loop0: detected capacity change from 0 to 39 syz-executor.0: attempt to access beyond end of device loop0: rw=2049, sector=124, nr_sectors = 4 limit=39 Buffer I/O error on dev loop0, logical block 31, lost async page write watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.4:14042] Modules linked in: irq event stamp: 3290753 hardirqs last enabled at (3290752): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3290753): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3289542): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3289555): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 14042 Comm: syz-executor.4 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:memcmp+0x6c/0x1d0 Code: e5 eb 15 48 83 c5 01 4b 8d 04 2c 48 83 c3 01 48 39 c5 0f 84 22 01 00 00 48 89 e8 48 89 ea 48 c1 e8 03 83 e2 07 42 0f b6 04 30 <38> d0 7f 08 84 c0 0f 85 2c 01 00 00 48 89 da 48 89 d9 0f b6 45 00 RSP: 0018:ffff88806cf099c0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888040b7585a RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888040b7585a RDI: ffff88803fb78040 RBP: ffff88803fb78040 R08: 0000000000000006 R09: fffffbfff0fda9d4 R10: 0000000000000000 R11: 00000000000c2f81 R12: ffff88803fb78040 R13: 0000000000000006 R14: dffffc0000000000 R15: ffff88806cf09ab0 FS: 00007fbb0f72c700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556a520c58 CR3: 000000000e2dc000 CR4: 0000000000350ef0 Call Trace: __rhashtable_lookup+0x612/0x7d0 sta_info_get_bss+0x12d/0x450 ieee80211_rx_for_interface+0x154/0x200 ieee80211_rx_list+0x1e54/0x2cf0 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:__slab_free+0x7f/0x310 Code: c1 e8 1f 4d 85 ed 66 89 5c 24 58 41 89 c6 41 0f 94 c2 66 85 db 74 05 45 84 d2 74 05 45 84 f6 74 42 41 8b 7f 08 4c 8b 4c 24 58 <4c> 89 ea 4c 89 e6 4c 8b 44 24 20 e8 c1 a0 ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff888030ae7420 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000d0008 RCX: 00000000000d0009 RDX: ffff888016a4bde0 RSI: ffffea00005a92c0 RDI: 0000000000089800 RBP: ffff888030ae74c0 R08: 0000000000000001 R09: 00000000000d0008 R10: ffffea00005a9200 R11: 0000000000000000 R12: ffffea00005a92c0 R13: ffff888016a4b4a0 R14: 0000000000000000 R15: ffff888008c4f780 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_kmalloc+0x6f/0x90 __kmalloc_noprof+0x1f7/0x4b0 security_sk_alloc+0x101/0x160 sk_prot_alloc+0x20b/0x280 sk_alloc+0x34/0xb50 __netlink_create+0x5d/0x280 __netlink_kernel_create+0xeb/0x7c0 nfnetlink_net_init+0xd3/0x150 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e00 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbb121d7b19 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:00007fbb0f72c188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fbb122eb020 RCX: 00007fbb121d7b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fbb12231f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc19cdfc6f R14: 00007fbb0f72c300 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: e5 eb in $0xeb,%eax 2: 15 48 83 c5 01 adc $0x1c58348,%eax 7: 4b 8d 04 2c lea (%r12,%r13,1),%rax b: 48 83 c3 01 add $0x1,%rbx f: 48 39 c5 cmp %rax,%rbp 12: 0f 84 22 01 00 00 je 0x13a 18: 48 89 e8 mov %rbp,%rax 1b: 48 89 ea mov %rbp,%rdx 1e: 48 c1 e8 03 shr $0x3,%rax 22: 83 e2 07 and $0x7,%edx 25: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax * 2a: 38 d0 cmp %dl,%al <-- trapping instruction 2c: 7f 08 jg 0x36 2e: 84 c0 test %al,%al 30: 0f 85 2c 01 00 00 jne 0x162 36: 48 89 da mov %rbx,%rdx 39: 48 89 d9 mov %rbx,%rcx 3c: 0f b6 45 00 movzbl 0x0(%rbp),%eax