netlink: 164 bytes leftover after parsing attributes in process `syz-executor.0'. I/O error, dev loop6, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 loop6: detected capacity change from 0 to 512 watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:4507] Modules linked in: irq event stamp: 4708667 hardirqs last enabled at (4708666): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4708667): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4698862): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4698865): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 4507 Comm: syz-executor.3 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ktime_get_with_offset+0x222/0x260 Code: 02 00 00 00 31 f6 48 c7 c7 48 7b 62 85 e8 16 20 f2 ff 48 8b 74 24 60 48 c7 c7 48 7b 62 85 e8 55 15 f2 ff e8 60 2d 16 00 fb 5a a2 fe ff ff e8 94 19 0f 00 0f 0b e9 28 fe ff ff 4c 89 f7 e8 d5 RSP: 0018:ffff88806ce09b20 EFLAGS: 00000202 RAX: 000000000047d916 RBX: 0000000000000200 RCX: ffffffff812b3b2f RDX: ffffffff82fc8eaa RSI: 0000000000000101 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff87632977 R10: fffffbfff0ec652e R11: 0000000000000001 R12: ffff88801a5b8a00 R13: fffffbfff0ac4f82 R14: ffffffff85627c10 R15: dffffc0000000000 FS: 00007f1015d2e700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555727a098 CR3: 0000000017846000 CR4: 0000000000350ef0 Call Trace: mac80211_hwsim_tx_frame_no_nl.isra.0+0x6aa/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:in_lock_functions+0x4/0x20 Code: 90 90 90 90 90 90 f3 0f 1e fa e9 6b 9b 14 03 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <31> c0 48 81 ff 40 ab 40 84 72 0c 31 c0 48 81 ff 05 ca 40 84 0f 92 RSP: 0018:ffff888048c97200 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffffffff81929df8 RCX: 1ffffffff0f37ef8 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81929df8 RBP: ffff88801c070740 R08: 0000000000000001 R09: ffffffff87632977 R10: fffffbfff0ec652e R11: 0000000000000001 R12: 1ffff11009192e47 R13: 0000000000000001 R14: dffffc0000000000 R15: ffffea00005c9b40 preempt_count_add+0x7c/0x150 free_buffer_head+0x58/0xf0 try_to_free_buffers+0x1a8/0x2b0 filemap_release_folio+0x153/0x1a0 block_invalidate_folio+0x4ad/0x5c0 truncate_cleanup_folio+0x2d8/0x3a0 truncate_inode_pages_range+0x22e/0xdf0 truncate_pagecache+0x67/0x90 fat_write_begin+0x118/0x180 generic_perform_write+0x25a/0x580 __generic_file_write_iter+0x308/0x4b0 generic_file_write_iter+0xe7/0x350 do_iter_readv_writev+0x211/0x3c0 do_iter_write+0x18b/0x700 vfs_iter_write+0x74/0xb0 iter_file_splice_write+0x73e/0xcb0 direct_splice_actor+0x113/0x180 splice_direct_to_actor+0x33a/0x8c0 do_splice_direct+0x1bc/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f10187b8b19 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:00007f1015d2e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f10188cbf60 RCX: 00007f10187b8b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007f1018812f6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6528f08f R14: 00007f1015d2e300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4519 Comm: syz-executor.1 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:write_comp_data+0x2c/0x90 Code: f1 49 89 d2 49 89 f8 65 8b 05 08 b1 ba 7e 89 c6 81 e6 00 01 00 00 65 48 8b 14 25 00 89 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 <8b> 82 0c 14 00 00 85 c0 74 4f 8b 82 e8 13 00 00 83 f8 03 75 44 48 RSP: 0018:ffff88806cf09070 EFLAGS: 00000006 RAX: 0000000000010103 RBX: 1ffff1100d9e1210 RCX: ffffffff815bfd79 RDX: ffff888015b98000 RSI: 0000000000000100 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88806cf09200 R13: ffff888048c60bc0 R14: ffff88806cf095b8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f54bc5bc998 CR3: 000000000fbd0000 CR4: 0000000000350ee0 Call Trace: perf_event_output_forward+0xb9/0x280 __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:__orc_find+0x6f/0xf0 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 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 RSP: 0018:ffff88806cf09668 EFLAGS: 00000217 RAX: 1ffffffff0c018f0 RBX: ffffffff8600c784 RCX: ffffffff843e93a1 RDX: 0000000000000000 RSI: ffffffff864631f2 RDI: ffffffff8600c764 RBP: ffffffff8600c764 R08: ffffffff864631f2 R09: ffffffff8605ad34 R10: ffffed100d9e12f3 R11: 0000000000038001 R12: ffffffff8600c7a4 R13: ffffffff8600c764 R14: ffffffff8600c764 R15: dffffc0000000000 unwind_next_frame+0x2b1/0x2130 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/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+0xa4b/0x2c10 Code: 0b 29 dc ff 4c 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 d2 17 00 00 4d 8b 2c 24 31 ff 4c 89 eb 48 83 e3 9f 48 89 de e8 45 25 dc ff <48> 85 db 74 89 e8 db 28 dc ff 48 8b 7c 24 38 be 08 00 00 00 e8 0c RSP: 0018:ffff8880478b7700 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 80000000347c9007 RCX: ffffffff816cb49b RDX: ffff888015b98000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 80000000347c9007 R11: 0000000000000001 R12: ffff88800ebb5280 R13: 80000000347c9007 R14: 00007fafe1963000 R15: ffff8880478b7ad8 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: 0033:0x7fafe21ebb19 Code: Unable to access opcode bytes at 0x7fafe21ebaef. RSP: 002b:00007fafdf761188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000005 RBX: 00007fafe22fef60 RCX: 00007fafe21ebb19 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000000a RBP: 00007fafe2245f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd780f433f R14: 00007fafdf761300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 02 00 add (%rax),%al 2: 00 00 add %al,(%rax) 4: 31 f6 xor %esi,%esi 6: 48 c7 c7 48 7b 62 85 mov $0xffffffff85627b48,%rdi d: e8 16 20 f2 ff callq 0xfff22028 12: 48 8b 74 24 60 mov 0x60(%rsp),%rsi 17: 48 c7 c7 48 7b 62 85 mov $0xffffffff85627b48,%rdi 1e: e8 55 15 f2 ff callq 0xfff21578 23: e8 60 2d 16 00 callq 0x162d88 28: fb sti 29: 5a pop %rdx * 2a: e9 a2 fe ff ff jmpq 0xfffffed1 <-- trapping instruction 2f: e8 94 19 0f 00 callq 0xf19c8 34: 0f 0b ud2 36: e9 28 fe ff ff jmpq 0xfffffe63 3b: 4c 89 f7 mov %r14,%rdi 3e: e8 .byte 0xe8 3f: d5 (bad)