syz-executor.6: attempt to access beyond end of device loop6: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop6, logical block 10, lost async page write FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.2:19277] Modules linked in: irq event stamp: 7678503 hardirqs last enabled at (7678502): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7678503): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (7512346): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (7512349): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 19277 Comm: syz-executor.2 Not tainted 6.1.0-rc6-next-20221128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x7c/0xf0 Code: e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 50 48 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec RSP: 0018:ffff88806ce09848 EFLAGS: 00000206 RAX: 0000000000000003 RBX: ffffffff85d7e6d8 RCX: ffffffff81396e5a RDX: 0000000000000000 RSI: ffffffff8608d904 RDI: ffffffff85d7e6d8 RBP: ffffffff85d7e6d8 R08: ffffffff8608d904 R09: ffffffff862e88c0 R10: ffffed100d9c132f R11: 0000000000038001 R12: ffffffff85d7e6d8 R13: ffffffff85d7e6d8 R14: ffffffff85d7e6d8 R15: dffffc0000000000 FS: 00007fc01d32f700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efd85c4e590 CR3: 000000001dda0000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 __create_object+0x389/0xc10 kmem_cache_alloc_node+0x283/0x420 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x36/0x1a0 Code: 41 57 41 56 41 55 49 89 fd 41 54 49 bc 00 00 00 00 00 fc ff df 55 48 89 f5 53 48 83 ec 08 eb 4d 49 63 86 c0 00 00 00 49 8b 18 <4c> 89 f7 49 29 c0 4c 89 c6 4d 89 c7 e8 39 f4 ff ff 48 89 c1 0f 1f RSP: 0018:ffff88804684f168 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff8880431ba000 RCX: ffff888008c5cdc0 RDX: ffffea0000615fc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff88801857fa00 R09: ffffffff8762884f R10: fffffbfff0ec5109 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88804684f1a8 R14: ffff888008c5cdc0 R15: ffff88803312f400 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x4c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc+0x273/0x410 __kernfs_new_node+0xd4/0x8c0 kernfs_new_node+0x97/0x120 __kernfs_create_file+0x55/0x350 sysfs_add_file_mode_ns+0x21c/0x440 internal_create_group+0x322/0xb20 internal_create_groups.part.0+0x90/0x140 sysfs_create_groups+0x29/0x50 device_add+0x1437/0x1ec0 netdev_register_kobject+0x17e/0x3b0 register_netdevice+0xd60/0x1530 register_netdev+0x31/0x60 sit_init_net+0x358/0xa00 ops_init+0xbb/0x680 setup_net+0x40c/0x9d0 copy_net_ns+0x31c/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x3b7/0x4a0 copy_process+0x29e3/0x7220 kernel_clone+0xeb/0x950 __do_sys_clone3+0x1d9/0x370 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fc01fdb9b19 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:00007fc01d32f188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fc01feccf60 RCX: 00007fc01fdb9b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fc01fe13f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc36f2afff R14: 00007fc01d32f300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.0-rc6-next-20221128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc80 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 cd 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ce 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff844112bb RDX: fffffbfff0b4814d RSI: 0000000000000004 RDI: ffffffff85a40a60 RBP: ffffffff85a40a60 R08: 0000000000000000 R09: ffffffff85a40a63 R10: fffffbfff0b4814c R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4814c R14: 0000000000000001 R15: 1ffff1100d9e1346 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d550789120 CR3: 00000000186e6000 CR4: 0000000000350ee0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 5e 01 fe cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 73 8f 41 00 fb f4 70 44 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 RSP: 0018:ffff888008ebfe58 EFLAGS: 00000202 RAX: ffffffff8440ee80 RBX: ffff888008e45040 RCX: ffffffff843ef872 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf34f03 R10: ffffed100d9e69e0 R11: 0000000000000001 R12: ffffed10011c8a08 R13: ffffffff85d065d0 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x88/0xd0 do_idle+0x3bd/0x530 cpu_startup_entry+0x18/0x20 start_secondary+0x1cc/0x220 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: e8 3f 48 c1 fa callq 0xfac14844 5: 02 48 01 add 0x1(%rax),%cl 8: d0 48 d1 rorb -0x2f(%rax) b: f8 clc c: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 11: 48 89 d8 mov %rbx,%rax 14: 48 c1 e8 03 shr $0x3,%rax 18: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 1d: 48 89 d8 mov %rbx,%rax 20: 83 e0 07 and $0x7,%eax 23: 83 c0 03 add $0x3,%eax 26: 38 d0 cmp %dl,%al 28: 7c 04 jl 0x2e * 2a: 84 d2 test %dl,%dl <-- trapping instruction 2c: 75 50 jne 0x7e 2e: 48 63 03 movslq (%rbx),%rax 31: 48 01 d8 add %rbx,%rax 34: 48 39 c1 cmp %rax,%rcx 37: 73 b0 jae 0xffffffe9 39: 4c 8d 63 fc lea -0x4(%rbx),%r12 3d: 49 39 ec cmp %rbp,%r12