loop6: detected capacity change from 0 to 256 watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.1:7862] Modules linked in: irq event stamp: 4418753 hardirqs last enabled at (4418752): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4418753): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4299490): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4299493): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 7862 Comm: syz-executor.1 Not tainted 6.1.0-rc6-next-20221125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x0/0x170 Code: 8b 44 24 10 e9 22 fe ff ff e8 1c f7 44 00 e9 52 fd ff ff e8 62 ae 06 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 RSP: 0018:ffff88806ce096a8 EFLAGS: 00000282 RAX: ffffffff817cc1a7 RBX: ffffffff81380cc0 RCX: 0000000000000000 RDX: 1ffff1100d9c12e1 RSI: ffffffff817cc1a7 RDI: ffff88806ce09778 RBP: ffff88806ce09748 R08: ffffffff860f0b6e R09: ffffffff860f0b72 R10: ffffed100d9c12e3 R11: ffff88806ce096f0 R12: ffff88806ce09778 R13: 0000000000000000 R14: ffff888017948000 R15: 0000000000000170 FS: 00007fac39aa7700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f07c0eea1c8 CR3: 000000000d8e0000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e0/0x410 __create_object+0x3d/0xc10 __kmem_cache_alloc_node+0x257/0x400 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __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:ext4_mpage_readpages+0x51/0x1730 Code: 00 00 00 48 89 7c 24 40 48 c1 e8 03 48 89 54 24 20 48 89 44 24 78 48 01 d8 48 89 74 24 38 48 c7 84 24 a0 00 00 00 b3 8a b5 41 <48> c7 84 24 a8 00 00 00 78 d1 24 85 48 c7 84 24 b0 00 00 00 b0 4e RSP: 0018:ffff888017947240 EFLAGS: 00000286 RAX: ffffed1002f28e5c RBX: dffffc0000000000 RCX: ffffc9001084b000 RDX: 0000000000000000 RSI: ffff888017947718 RDI: ffff88801da84840 RBP: ffff888017947718 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801da84840 R13: ffff88801da845e0 R14: ffff88801da84840 R15: ffff888017947718 ext4_readahead+0x106/0x140 read_pages+0x1ae/0xc70 page_cache_ra_unbounded+0x469/0x5e0 ondemand_readahead+0x8d7/0x1090 page_cache_sync_ra+0x1c9/0x200 filemap_get_pages+0x2d2/0x1590 filemap_read+0x315/0xb60 generic_file_read_iter+0x3d1/0x540 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: 0033:0x7fac3c531b19 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:00007fac39aa7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fac3c644f60 RCX: 00007fac3c531b19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007fac3c58bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000005f1 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe155bbf5f R14: 00007fac39aa7300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7863 Comm: syz-executor.2 Not tainted 6.1.0-rc6-next-20221125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mark_lock.part.0+0x1a1/0x2f70 Code: 00 00 48 81 c4 38 01 00 00 44 89 d8 5b 5d 41 5c 41 5d 41 5e 41 5f e9 b2 96 15 03 48 8d 7e 22 48 89 f8 48 c1 e8 03 0f b6 04 10 <48> 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 5e 08 00 00 0f b6 45 22 RSP: 0018:ffff88806cf09060 EFLAGS: 00000012 RAX: 0000000000000000 RBX: 1ffff1100d9e1213 RCX: ffffffff812b6b6f RDX: dffffc0000000000 RSI: ffff888021a43f58 RDI: ffff888021a43f7a RBP: ffff888021a43f58 R08: 0000000000000000 R09: ffffffff8762784f R10: fffffbfff0ec4f09 R11: 0000000000000001 R12: 0000000000000008 R13: ffff888021a43f58 R14: 0000000000000003 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020016000 CR3: 000000001b894000 CR4: 0000000000350ee0 Call Trace: __lock_acquire+0x896/0x5e70 lock_acquire+0x1a6/0x530 _raw_spin_lock_irq+0x36/0x50 __hrtimer_run_queues+0x1ee/0xba0 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: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 70 ba 48 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:ffff88806cf096b0 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000006cf4 RSI: 0000000000006cf4 RDI: ffffffff864a6e40 RBP: ffff88806cf09788 R08: ffffffff860d7d28 R09: ffffffff860d7d2c R10: ffff88806cf09ff8 R11: 0000000000038001 R12: ffff88806cf09771 R13: ffff88806cf09790 R14: ffff88806cf09730 R15: ffffffff816cf4ef arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __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/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:preempt_schedule_common+0x2/0xc0 Code: ff e8 62 92 3d fd e9 74 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 55 <41> 54 49 bc 00 00 00 00 00 fc ff df 55 53 65 48 8b 1c 25 00 89 03 RSP: 0018:ffff88804684f6e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007f1911844000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888021a43e70 RBP: dffffc0000000000 R08: 0000000000000006 R09: 00007f1911844000 R10: 00007f1911a00000 R11: 0000000000000001 R12: ffffffff85d06d50 R13: 0000000000000004 R14: 00007f1911a00000 R15: ffff88804684fad8 __cond_resched+0x1b/0x30 unmap_page_range+0xd7d/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 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: 0033:0x7f1913090b19 Code: Unable to access opcode bytes at 0x7f1913090aef. RSP: 002b:00007f1910606188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: 0000000000015000 RBX: 00007f19131a3f60 RCX: 00007f1913090b19 RDX: 00000000000292e9 RSI: 0000000020000080 RDI: 0000000000000007 RBP: 00007f19130eaf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec6e85abf R14: 00007f1910606300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 8b 44 24 10 mov 0x10(%rsp),%eax 4: e9 22 fe ff ff jmpq 0xfffffe2b 9: e8 1c f7 44 00 callq 0x44f72a e: e9 52 fd ff ff jmpq 0xfffffd65 13: e8 62 ae 06 03 callq 0x306ae7a 18: 66 90 xchg %ax,%ax 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 35: fc ff df 38: 55 push %rbp 39: 53 push %rbx 3a: 48 89 fb mov %rdi,%rbx 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c7 .byte 0xc7