Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.151' (ECDSA) to the list of known hosts. syzkaller login: [ 63.200326][ T8512] IPVS: ftp: loaded support on port[0] = 21 [ 63.205543][ T8516] IPVS: ftp: loaded support on port[0] = 21 [ 63.212371][ T8517] IPVS: ftp: loaded support on port[0] = 21 [ 63.212808][ T8519] IPVS: ftp: loaded support on port[0] = 21 [ 63.221390][ T8518] IPVS: ftp: loaded support on port[0] = 21 [ 63.240058][ T8514] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 105.446247][T23636] ================================================================== [ 105.454362][T23636] BUG: KASAN: use-after-free in lockdep_register_key+0x356/0x3e0 [ 105.462084][T23636] Read of size 8 at addr ffff88801b78f2d8 by task syz-executor828/23636 [ 105.470748][T23636] [ 105.473081][T23636] CPU: 1 PID: 23636 Comm: syz-executor828 Not tainted 5.9.0-syzkaller #0 [ 105.481486][T23636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.491634][T23636] Call Trace: executing program executing program executing program executing program executing program executing program [ 105.494949][T23636] dump_stack+0x107/0x163 [ 105.499294][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.504760][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.510159][T23636] print_address_description.constprop.0.cold+0xae/0x4c8 [ 105.517190][T23636] ? get_random_u32+0x103/0x200 [ 105.522049][T23636] ? vprintk_func+0x95/0x1e0 [ 105.526658][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.532120][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.537494][T23636] kasan_report.cold+0x1f/0x37 executing program executing program executing program executing program [ 105.542262][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.547651][T23636] lockdep_register_key+0x356/0x3e0 [ 105.552859][T23636] htab_map_alloc+0x6c5/0x14a0 [ 105.557627][T23636] ? bpf_lsm_capable+0x5/0x10 [ 105.562302][T23636] ? security_capable+0x8f/0xc0 [ 105.567183][T23636] ? htab_map_alloc_check+0x305/0x450 [ 105.572589][T23636] ? htab_lru_percpu_map_lookup_batch+0x40/0x40 [ 105.578830][T23636] __do_sys_bpf+0xa80/0x5180 [ 105.583424][T23636] ? bpf_link_get_from_fd+0x110/0x110 [ 105.588800][T23636] ? __up_read+0x1a1/0x7b0 executing program executing program executing program executing program executing program executing program [ 105.593231][T23636] ? _down_write_nest_lock+0x150/0x150 [ 105.598711][T23636] ? syscall_enter_from_user_mode+0x1d/0x50 [ 105.605220][T23636] do_syscall_64+0x2d/0x70 [ 105.609645][T23636] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 105.615539][T23636] RIP: 0033:0x4469e9 [ 105.619457][T23636] Code: e8 8c e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 7b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 executing program executing program [ 105.639066][T23636] RSP: 002b:00007fd7498c2db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 105.647489][T23636] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004469e9 [ 105.656027][T23636] RDX: 0000000000000040 RSI: 0000000020000200 RDI: 0000000000000000 [ 105.664189][T23636] RBP: 00000000006dbc20 R08: 00007fd7498c3700 R09: 0000000000000000 [ 105.672252][T23636] R10: 00007fd7498c3700 R11: 0000000000000246 R12: 00000000006dbc2c [ 105.682329][T23636] R13: 00007ffe949789ff R14: 00007fd7498c39c0 R15: 0000000000000000 [ 105.690315][T23636] [ 105.692655][T23636] Allocated by task 19600: executing program executing program [ 105.697092][T23636] kasan_save_stack+0x1b/0x40 [ 105.701770][T23636] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 105.707404][T23636] htab_map_alloc+0xdf/0x14a0 [ 105.712090][T23636] __do_sys_bpf+0xa80/0x5180 [ 105.716681][T23636] do_syscall_64+0x2d/0x70 [ 105.721187][T23636] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 105.727150][T23636] [ 105.729461][T23636] Freed by task 19600: [ 105.733606][T23636] kasan_save_stack+0x1b/0x40 [ 105.738266][T23636] kasan_set_track+0x1c/0x30 [ 105.742837][T23636] kasan_set_free_info+0x1b/0x30 [ 105.747754][T23636] __kasan_slab_free+0x102/0x140 [ 105.752669][T23636] slab_free_freelist_hook+0x5d/0x150 [ 105.758019][T23636] kfree+0xdb/0x360 [ 105.761805][T23636] htab_map_alloc+0x3f9/0x14a0 [ 105.766716][T23636] __do_sys_bpf+0xa80/0x5180 [ 105.771282][T23636] do_syscall_64+0x2d/0x70 [ 105.775739][T23636] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 105.781611][T23636] [ 105.783928][T23636] The buggy address belongs to the object at ffff88801b78f000 [ 105.783928][T23636] which belongs to the cache kmalloc-1k of size 1024 [ 105.797958][T23636] The buggy address is located 728 bytes inside of [ 105.797958][T23636] 1024-byte region [ffff88801b78f000, ffff88801b78f400) [ 105.811286][T23636] The buggy address belongs to the page: [ 105.817000][T23636] page:000000007495086b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b788 [ 105.827117][T23636] head:000000007495086b order:3 compound_mapcount:0 compound_pincount:0 [ 105.835409][T23636] flags: 0xfff00000010200(slab|head) [ 105.840667][T23636] raw: 00fff00000010200 ffffea0000800000 0000000300000003 ffff888010041140 [ 105.849239][T23636] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 105.857798][T23636] page dumped because: kasan: bad access detected [ 105.864178][T23636] [ 105.866475][T23636] Memory state around the buggy address: [ 105.872087][T23636] ffff88801b78f180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 105.880121][T23636] ffff88801b78f200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 105.888166][T23636] >ffff88801b78f280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 105.896196][T23636] ^ [ 105.903097][T23636] ffff88801b78f300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 105.911134][T23636] ffff88801b78f380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 105.919166][T23636] ================================================================== [ 105.927211][T23636] Disabling lock debugging due to kernel taint [ 105.933331][T23636] Kernel panic - not syncing: panic_on_warn set ... [ 105.939892][T23636] CPU: 1 PID: 23636 Comm: syz-executor828 Tainted: G B 5.9.0-syzkaller #0 [ 105.949665][T23636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.959689][T23636] Call Trace: [ 105.962956][T23636] dump_stack+0x107/0x163 [ 105.967259][T23636] ? lockdep_register_key+0x270/0x3e0 [ 105.972603][T23636] panic+0x306/0x73d [ 105.976470][T23636] ? __warn_printk+0xf3/0xf3 [ 105.981033][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.986407][T23636] ? lockdep_register_key+0x356/0x3e0 [ 105.991760][T23636] end_report+0x58/0x5e [ 105.995886][T23636] kasan_report.cold+0xd/0x37 [ 106.000533][T23636] ? lockdep_register_key+0x356/0x3e0 [ 106.005963][T23636] lockdep_register_key+0x356/0x3e0 [ 106.011134][T23636] htab_map_alloc+0x6c5/0x14a0 [ 106.015867][T23636] ? bpf_lsm_capable+0x5/0x10 [ 106.020514][T23636] ? security_capable+0x8f/0xc0 [ 106.025337][T23636] ? htab_map_alloc_check+0x305/0x450 [ 106.030684][T23636] ? htab_lru_percpu_map_lookup_batch+0x40/0x40 [ 106.036905][T23636] __do_sys_bpf+0xa80/0x5180 [ 106.041476][T23636] ? bpf_link_get_from_fd+0x110/0x110 [ 106.046917][T23636] ? __up_read+0x1a1/0x7b0 [ 106.051325][T23636] ? _down_write_nest_lock+0x150/0x150 [ 106.056760][T23636] ? syscall_enter_from_user_mode+0x1d/0x50 [ 106.062622][T23636] do_syscall_64+0x2d/0x70 [ 106.067022][T23636] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 106.072886][T23636] RIP: 0033:0x4469e9 [ 106.076766][T23636] Code: e8 8c e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 7b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 106.096339][T23636] RSP: 002b:00007fd7498c2db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 106.104730][T23636] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004469e9 [ 106.112823][T23636] RDX: 0000000000000040 RSI: 0000000020000200 RDI: 0000000000000000 [ 106.120774][T23636] RBP: 00000000006dbc20 R08: 00007fd7498c3700 R09: 0000000000000000 [ 106.128722][T23636] R10: 00007fd7498c3700 R11: 0000000000000246 R12: 00000000006dbc2c [ 106.136672][T23636] R13: 00007ffe949789ff R14: 00007fd7498c39c0 R15: 0000000000000000 [ 107.203944][T23636] Shutting down cpus with NMI [ 107.209407][T23636] Kernel Offset: disabled [ 107.213722][T23636] Rebooting in 86400 seconds..