loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): Can't read superblock on 2nd try loop6: detected capacity change from 0 to 264192 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:4298] Modules linked in: irq event stamp: 5124783 hardirqs last enabled at (5124782): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5124783): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5067072): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5067075): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 4298 Comm: syz-executor.1 Not tainted 6.2.0-rc3-next-20230109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1c2/0x2130 Code: 8d 43 ff 39 c6 0f 83 8c 15 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 10 b7 49 86 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 28 RSP: 0018:ffff88806ce095f0 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000001aea RSI: 0000000000001aea RDI: ffffffff864a22b8 RBP: ffff88806ce096c8 R08: ffffffff8605eb86 R09: ffffffff8605eb8a R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce096b1 R13: ffff88806ce096d0 R14: ffff88806ce09670 R15: ffffffff811aead4 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558af4601ec0 CR3: 0000000005426000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x172/0x300 __create_object+0x3d/0xc40 kmem_cache_alloc_node+0x215/0x310 __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+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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+0xa3a/0x2c90 Code: 10 48 8b 44 24 10 48 2d 00 10 00 00 48 89 04 24 e8 4b ee db ff 4c 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 3d 18 00 00 4d 8b 2c 24 <31> ff 4c 89 eb 48 83 e3 9f 48 89 de e8 85 ea db ff 48 85 db 74 89 RSP: 0018:ffff8880468ef700 EFLAGS: 00000246 RAX: 1ffff110034c53e2 RBX: 00007f45b55e2000 RCX: 0000000000000000 RDX: ffff888014281ac0 RSI: ffffffff816d8425 RDI: 0000000000000006 RBP: dffffc0000000000 R08: 0000000000000006 R09: 00007f45b55e2000 R10: 00007f45b5600000 R11: 0000000000000001 R12: ffff88801a629f10 R13: 800000003c3cc007 R14: 00007f45b5600000 R15: ffff8880468efad8 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0xf5/0x190 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f45b7097b19 Code: Unable to access opcode bytes at 0x7f45b7097aef. RSP: 002b:00007f45b460d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000136 RAX: 00000000000000a8 RBX: 00007f45b71aaf60 RCX: 00007f45b7097b19 RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000025 RBP: 00007f45b70f1f6d R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff04cc9b9f R14: 00007f45b460d300 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): 0: 8d 43 ff lea -0x1(%rbx),%eax 3: 39 c6 cmp %eax,%esi 5: 0f 83 8c 15 00 00 jae 0x1597 b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 12: fc ff df 15: 89 f2 mov %esi,%edx 17: 48 8d 3c 95 10 b7 49 lea -0x79b648f0(,%rdx,4),%rdi 1e: 86 1f: 48 89 f9 mov %rdi,%rcx 22: 48 c1 e9 03 shr $0x3,%rcx 26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 c8 cmp %cl,%al 35: 7c 27 jl 0x5e 37: 84 c9 test %cl,%cl 39: 74 23 je 0x5e 3b: 48 89 54 24 28 mov %rdx,0x28(%rsp)