loop0: detected capacity change from 0 to 40 I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 loop5: detected capacity change from 0 to 40 watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.5:10653] Modules linked in: irq event stamp: 3602587 hardirqs last enabled at (3602586): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3602587): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3597450): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3597453): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 10653 Comm: syz-executor.5 Not tainted 6.1.0-next-20221219 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:filter_irq_stacks+0x2f/0x90 Code: 54 41 89 f4 55 53 48 83 ec 08 85 f6 74 30 48 bd 00 00 00 00 00 fc ff df 31 db 48 89 f8 48 c1 e8 03 80 3c 28 00 75 53 48 8b 07 <48> 3d 10 02 60 84 72 1c 48 3d 10 16 60 84 73 14 44 8d 63 01 48 83 RSP: 0018:ffff88806cf09940 EFLAGS: 00000246 RAX: ffffffff84428af7 RBX: 000000000000000d RCX: 0000000000000800 RDX: 0000000000000000 RSI: 0000000000000020 RDI: ffff88806cf09a40 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000020 R13: 0000000000000000 R14: 0000000000000800 R15: ffff88806cf099d8 FS: 00007f431ae9a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560c031c5238 CR3: 000000000e67e000 CR4: 0000000000350ee0 Call Trace: __stack_depot_save+0x3e/0x4e0 kasan_save_stack+0x35/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0x9f0 kmem_cache_free+0xc1/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 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/0xc70 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:__sanitizer_cov_trace_pc+0x0/0x70 Code: be a8 01 00 00 e8 a0 ff ff ff 31 c0 e9 ed 6a f9 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 4d 5b ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffff8880452f76c8 EFLAGS: 00000216 RAX: 000000000003cdec RBX: 0000000000000001 RCX: ffffc90002bf5000 RDX: 0000000000040000 RSI: ffffffff818fb2ee RDI: 0000000000000001 RBP: ffff88801ba78ca0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801ba78d78 R13: 0000000000000001 R14: 0000000000000001 R15: ffff888042a024a0 __mark_inode_dirty+0x201/0xe70 touch_atime+0x648/0x700 filemap_read+0x99d/0xb60 generic_file_read_iter+0x35c/0x550 ext4_file_read_iter+0x186/0x4a0 generic_file_splice_read+0x18b/0x4d0 do_splice_to+0x1bc/0x240 splice_direct_to_actor+0x2b0/0x8c0 do_splice_direct+0x1bc/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x248/0x2a0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f431d924b19 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:00007f431ae9a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f431da37f60 RCX: 00007f431d924b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000006 RBP: 00007f431d97ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000040fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe49a1af0f R14: 00007f431ae9a300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10629 Comm: syz-executor.6 Not tainted 6.1.0-next-20221219 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_release+0x149/0x750 Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 9a 05 00 00 45 8b 8e 5c 09 00 00 45 85 c9 0f 85 93 02 00 00 9c 8f 04 24 fa <48> c7 c7 c0 02 87 84 e8 ab 5a 14 03 48 89 da 83 e3 07 48 b8 00 00 RSP: 0018:ffff88806ce093f8 EFLAGS: 00000046 RAX: 0000000000000007 RBX: ffffffff85d0a3cc RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000010103 RDI: ffff8880423c895c RBP: 1ffff1100d9c1281 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff85608660 R13: ffff8880446534e0 R14: ffff8880423c8000 R15: ffff88806ce094e0 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561e28ee6628 CR3: 000000001733e000 CR4: 0000000000350ef0 Call Trace: perf_event_output_forward+0x165/0x280 __perf_event_overflow+0x3ed/0x760 perf_swevent_hrtimer+0x361/0x3d0 __hrtimer_run_queues+0x17f/0xc70 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:kasan_set_track+0x28/0x30 Code: 90 90 66 0f 1f 00 53 48 89 fb 89 f7 be 01 00 00 00 65 48 8b 04 25 00 89 03 00 8b 80 20 05 00 00 89 03 e8 7b ff ff ff 89 43 04 <5b> e9 b6 70 c5 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff88806ce09a80 EFLAGS: 00000282 RAX: 0000000005fc01c3 RBX: ffff888015e82200 RCX: 0000000000000000 RDX: 00000000000a7846 RSI: ffff88806ce098d4 RDI: 0000000000000000 RBP: ffff888008441c80 R08: 000000000000000f R09: ffff88801dc41fc0 R10: ffff88806c93c230 R11: 0000000000000001 R12: ffff888015e82000 R13: 0000000000082a20 R14: 0000000000000a20 R15: ffffffff834c5fbd __kasan_kmalloc+0x82/0x90 __kmalloc_node_track_caller+0x53/0xb0 __alloc_skb+0xe9/0x310 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/0xc70 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:unmap_page_range+0x180c/0x2c10 Code: 89 04 24 e9 a0 f5 ff ff 41 bc 27 00 00 00 e9 c4 fc ff ff 48 8b 44 24 50 48 89 04 24 e9 41 fb ff ff e8 48 13 dc ff 48 8b 34 24 <48> 8b 7c 24 68 4c 89 ea e8 f7 e4 ff ff 48 83 7c 24 28 00 49 89 c5 RSP: 0018:ffff888046a5f700 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 8000000000000007 RCX: 0000000000000000 RDX: ffff8880423c8000 RSI: 00007f444d4dd000 RDI: 0000000000000005 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801e90c6e8 R13: 8000000039313007 R14: 0000000000000001 R15: ffff888046a5fad8 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2760 do_group_exit+0xd4/0x2a0 get_signal+0x21b7/0x22f0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f444e183b19 Code: Unable to access opcode bytes at 0x7f444e183aef. RSP: 002b:00007f444b6f9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: 0000000000000220 RBX: 00007f444e296f60 RCX: 00007f444e183b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007f444e1ddf6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000040fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd711ce4af R14: 00007f444b6f9300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 54 push %rsp 1: 41 89 f4 mov %esi,%r12d 4: 55 push %rbp 5: 53 push %rbx 6: 48 83 ec 08 sub $0x8,%rsp a: 85 f6 test %esi,%esi c: 74 30 je 0x3e e: 48 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%rbp 15: fc ff df 18: 31 db xor %ebx,%ebx 1a: 48 89 f8 mov %rdi,%rax 1d: 48 c1 e8 03 shr $0x3,%rax 21: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 25: 75 53 jne 0x7a 27: 48 8b 07 mov (%rdi),%rax * 2a: 48 3d 10 02 60 84 cmp $0xffffffff84600210,%rax <-- trapping instruction 30: 72 1c jb 0x4e 32: 48 3d 10 16 60 84 cmp $0xffffffff84601610,%rax 38: 73 14 jae 0x4e 3a: 44 8d 63 01 lea 0x1(%rbx),%r12d 3e: 48 rex.W 3f: 83 .byte 0x83