[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.131' (ECDSA) to the list of known hosts. syzkaller login: [ 100.787973] IPVS: ftp: loaded support on port[0] = 21 [ 100.787979] IPVS: ftp: loaded support on port[0] = 21 [ 100.803784] IPVS: ftp: loaded support on port[0] = 21 [ 100.811007] IPVS: ftp: loaded support on port[0] = 21 [ 100.813586] IPVS: ftp: loaded support on port[0] = 21 [ 100.821007] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 101.002699] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 101.029722] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 101.032150] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 101.069245] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 101.105758] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 101.129322] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program executing program [ 101.376667] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 101.441137] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 101.443397] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 101.467746] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 101.467804] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue executing program [ 101.479250] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 101.546380] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program [ 101.758294] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 101.810240] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 101.811636] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 101.885739] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 101.916032] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 101.919083] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 102.048153] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program [ 102.253480] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 102.263228] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 102.315668] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 102.326491] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 102.354574] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 102.399353] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program [ 102.601875] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program [ 102.691407] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 102.702346] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue executing program [ 102.732225] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 102.744845] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program [ 102.784226] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 102.874189] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 102.902425] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 103.018270] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 103.037306] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 103.084135] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 103.095891] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program [ 103.207369] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 103.223906] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 103.239736] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program [ 103.293328] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 103.344205] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 103.415982] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 103.550822] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 103.563295] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue executing program [ 103.605471] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 103.612453] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program [ 103.661642] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 103.746485] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program [ 103.947544] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 103.968551] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 104.007312] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 104.020195] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 104.022407] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 104.063160] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 104.086152] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program [ 104.301053] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program [ 104.386886] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 104.389253] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 104.442751] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 104.469305] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue executing program [ 104.532643] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program [ 104.601183] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 107.917059] EXT4-fs (loop3): VFS: Can't find ext4 filesystem executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 111.576356] EXT4-fs (loop5): VFS: Can't find ext4 filesystem executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 119.501650] EXT4-fs error (device loop3) in ext4_reserve_inode_write:5939: Out of memory [ 119.534170] EXT4-fs warning (device loop3): ext4_evict_inode:293: couldn't mark inode dirty (err -12) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 123.718069] ------------[ cut here ]------------ [ 123.723005] kernel BUG at fs/ext4/ext4.h:2869! [ 123.727805] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 123.733203] CPU: 0 PID: 12116 Comm: syz-executor253 Not tainted 4.19.157-syzkaller #0 [ 123.741151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 123.750587] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 [ 123.756194] Code: 26 be 9d ff e9 b9 f6 ff ff e8 8c 66 7e ff e9 b4 f4 ff ff e8 82 66 7e ff 48 89 ef e8 0a be 9d ff e9 51 fa ff ff e8 70 66 7e ff <0f> 0b e8 69 66 7e ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff [ 123.775115] RSP: 0018:ffff88808cc27c18 EFLAGS: 00010293 [ 123.780475] RAX: ffff8880af948500 RBX: ffff88808cc27d58 RCX: ffffffff81e655a3 [ 123.787764] RDX: 0000000000000000 RSI: ffffffff81e668f0 RDI: 0000000000000004 [ 123.795035] RBP: ffff88809e2c6c40 R08: 0000000000000000 R09: 00000000fffcef43 [ 123.802301] R10: 0000000000000004 R11: 0000000000000000 R12: 00000000fffcef43 [ 123.809560] R13: ffff888093aacc80 R14: ffff88809e2c72c0 R15: 0000000000000001 [ 123.816819] FS: 000000000181c880(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 123.825044] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 123.830912] CR2: 00000000018258b8 CR3: 00000000b3325000 CR4: 00000000001406f0 [ 123.838169] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 123.845431] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 123.852700] Call Trace: [ 123.855555] ? ext4_discard_preallocations+0x251/0xfb0 [ 123.860824] ? ext4_llseek+0x2a0/0x2a0 [ 123.864698] ? ext4_get_group_number+0x146/0x1d0 [ 123.869442] ext4_discard_preallocations+0xaf4/0xfb0 [ 123.874544] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 123.879634] ? mark_held_locks+0xf0/0xf0 [ 123.883681] ? ext4_exit_mballoc+0xb0/0xb0 [ 123.887911] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 123.893016] ? mark_held_locks+0xf0/0xf0 [ 123.897119] ? lock_acquire+0x170/0x3c0 [ 123.901082] ? ext4_release_file+0x2b0/0x340 [ 123.905476] ? ext4_llseek+0x2a0/0x2a0 [ 123.909355] ext4_release_file+0x2b8/0x340 [ 123.913584] __fput+0x2ce/0x890 [ 123.916851] task_work_run+0x148/0x1c0 [ 123.920725] exit_to_usermode_loop+0x251/0x2a0 [ 123.925300] do_syscall_64+0x538/0x620 [ 123.929173] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 123.934357] RIP: 0033:0x406581 [ 123.937533] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 64 19 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 123.956439] RSP: 002b:00007ffe00567d40 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 123.964129] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000406581 [ 123.971381] RDX: fffffffffffffff7 RSI: 0000000000000000 RDI: 0000000000000006 [ 123.978635] RBP: 00000000006dec8c R08: 0000000000000001 R09: 0000000000000001 [ 123.985904] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000001e327 [ 123.993159] R13: 0000000000000002 R14: 20c49ba5e353f7cf R15: 0000000000000009 [ 124.000413] Modules linked in: [ 124.004145] ---[ end trace 8c00c437fe3fb7fa ]--- [ 124.008946] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 executing program executing program executing program executing program [ 124.014612] Code: 26 be 9d ff e9 b9 f6 ff ff e8 8c 66 7e ff e9 b4 f4 ff ff e8 82 66 7e ff 48 89 ef e8 0a be 9d ff e9 51 fa ff ff e8 70 66 7e ff <0f> 0b e8 69 66 7e ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff [ 124.038866] RSP: 0018:ffff88808cc27c18 EFLAGS: 00010293 [ 124.072591] RAX: ffff8880af948500 RBX: ffff88808cc27d58 RCX: ffffffff81e655a3 [ 124.072607] RDX: 0000000000000000 RSI: ffffffff81e668f0 RDI: 0000000000000004 [ 124.072614] RBP: ffff88809e2c6c40 R08: 0000000000000000 R09: 00000000fffcef43 [ 124.072621] R10: 0000000000000004 R11: 0000000000000000 R12: 00000000fffcef43 [ 124.072629] R13: ffff888093aacc80 R14: ffff88809e2c72c0 R15: 0000000000000001 [ 124.072640] FS: 000000000181c880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 124.072648] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 124.072655] CR2: 0000000020000180 CR3: 00000000b3325000 CR4: 00000000001406e0 [ 124.072665] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 124.072671] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 124.072678] Kernel panic - not syncing: Fatal exception [ 124.073425] Kernel Offset: disabled [ 124.154897] Rebooting in 86400 seconds..