[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.38' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.338867] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 34.346798] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock [ 34.360317] F2FS-fs (loop0): invalid crc value [ 34.371996] attempt to access beyond end of device [ 34.377494] loop0: rw=12288, want=20488, limit=16479 [ 34.384131] attempt to access beyond end of device [ 34.389174] loop0: rw=12288, want=20496, limit=16479 [ 34.394316] attempt to access beyond end of device [ 34.400445] loop0: rw=12288, want=20504, limit=16479 [ 34.405708] attempt to access beyond end of device [ 34.410731] loop0: rw=12288, want=20512, limit=16479 [ 34.415970] attempt to access beyond end of device [ 34.421425] loop0: rw=12288, want=20520, limit=16479 [ 34.426740] attempt to access beyond end of device [ 34.431681] loop0: rw=12288, want=20528, limit=16479 [ 34.437920] attempt to access beyond end of device [ 34.443123] loop0: rw=12288, want=20536, limit=16479 [ 34.448496] attempt to access beyond end of device [ 34.454208] loop0: rw=12288, want=20544, limit=16479 [ 34.460469] attempt to access beyond end of device [ 34.465830] loop0: rw=12288, want=20488, limit=16479 [ 34.471201] attempt to access beyond end of device [ 34.476760] loop0: rw=12288, want=20488, limit=16479 [ 34.482847] attempt to access beyond end of device [ 34.487972] loop0: rw=12288, want=20488, limit=16479 [ 34.493459] attempt to access beyond end of device [ 34.498641] loop0: rw=12288, want=20488, limit=16479 [ 34.504041] attempt to access beyond end of device [ 34.509092] loop0: rw=12288, want=20488, limit=16479 [ 34.515304] attempt to access beyond end of device [ 34.520281] loop0: rw=12288, want=20488, limit=16479 [ 34.525712] attempt to access beyond end of device [ 34.530757] loop0: rw=12288, want=20488, limit=16479 [ 34.537970] attempt to access beyond end of device [ 34.543043] loop0: rw=12288, want=20488, limit=16479 [ 34.548673] attempt to access beyond end of device [ 34.553660] loop0: rw=12288, want=20488, limit=16479 [ 34.559354] ------------[ cut here ]------------ [ 34.564120] kernel BUG at fs/f2fs/checkpoint.c:127! [ 34.569205] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 34.574573] CPU: 1 PID: 8105 Comm: syz-executor090 Not tainted 4.19.170-syzkaller #0 [ 34.582529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.592175] RIP: 0010:f2fs_get_meta_page_nofail+0x12d/0x150 [ 34.597884] Code: e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 75 23 83 8b 84 00 00 00 08 4c 89 e6 4c 89 ef e8 eb 23 02 05 48 89 ef e8 83 a7 02 00 <0f> 0b e8 3c 13 84 fe eb 80 be 04 00 00 00 e8 20 17 84 fe eb d1 0f [ 34.617085] RSP: 0018:ffff8880a249f8d0 EFLAGS: 00010293 [ 34.622487] RAX: ffff888096ea03c0 RBX: ffff8880b0d46d00 RCX: ffffffff83168411 [ 34.629945] RDX: 0000000000000000 RSI: ffffffff8313fcfd RDI: 0000000000000005 [ 34.637386] RBP: ffff8880b0054d40 R08: ffffffff8cd3a008 R09: 0000000000000001 [ 34.644890] R10: 0000000000000005 R11: 0000000000000001 R12: 0000000000000286 [ 34.652859] R13: ffff8880b0055238 R14: 0000000000000000 R15: ffff8880b0054d40 [ 34.660684] FS: 0000000001e79880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.668904] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.674910] CR2: 0000556a9ee03220 CR3: 0000000099031000 CR4: 00000000001406e0 [ 34.682465] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.690293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.697971] Call Trace: [ 34.700669] __f2fs_build_free_nids+0x338/0x1020 [ 34.705509] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.710673] f2fs_build_node_manager+0x24c5/0x31d0 [ 34.715670] f2fs_fill_super+0x31fd/0x7050 [ 34.719901] ? snprintf+0xbb/0xf0 [ 34.723346] ? f2fs_commit_super+0x400/0x400 [ 34.727749] ? wait_for_completion_io+0x10/0x10 [ 34.732446] ? set_blocksize+0x163/0x3f0 [ 34.736505] mount_bdev+0x2fc/0x3b0 [ 34.740146] ? f2fs_commit_super+0x400/0x400 [ 34.744564] mount_fs+0xa3/0x310 [ 34.747967] vfs_kern_mount.part.0+0x68/0x470 [ 34.752631] do_mount+0x113c/0x2f10 [ 34.756392] ? cmp_ex_sort+0xc0/0xc0 [ 34.760226] ? __do_page_fault+0x180/0xd60 [ 34.764536] ? copy_mount_string+0x40/0x40 [ 34.768924] ? copy_mount_options+0x1cd/0x380 [ 34.773501] ? memset+0x20/0x40 [ 34.777071] ? copy_mount_options+0x26f/0x380 [ 34.781926] ksys_mount+0xcf/0x130 [ 34.785459] __x64_sys_mount+0xba/0x150 [ 34.789495] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.794074] do_syscall_64+0xf9/0x620 [ 34.797909] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.803185] RIP: 0033:0x4470ca [ 34.806601] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 34.826094] RSP: 002b:00007fff672c4798 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 34.834065] RAX: ffffffffffffffda RBX: 00007fff672c47f0 RCX: 00000000004470ca [ 34.841679] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff672c47b0 [ 34.848993] RBP: 00007fff672c47b0 R08: 00007fff672c47f0 R09: 00007fff00000015 [ 34.856692] R10: 0000000000000000 R11: 0000000000000297 R12: 000000000000000e [ 34.864538] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 34.872635] Modules linked in: [ 34.876125] ---[ end trace aa8fd401df104012 ]--- [ 34.880906] RIP: 0010:f2fs_get_meta_page_nofail+0x12d/0x150 [ 34.886704] Code: e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 75 23 83 8b 84 00 00 00 08 4c 89 e6 4c 89 ef e8 eb 23 02 05 48 89 ef e8 83 a7 02 00 <0f> 0b e8 3c 13 84 fe eb 80 be 04 00 00 00 e8 20 17 84 fe eb d1 0f [ 34.906199] RSP: 0018:ffff8880a249f8d0 EFLAGS: 00010293 [ 34.911849] RAX: ffff888096ea03c0 RBX: ffff8880b0d46d00 RCX: ffffffff83168411 [ 34.919756] RDX: 0000000000000000 RSI: ffffffff8313fcfd RDI: 0000000000000005 [ 34.928035] RBP: ffff8880b0054d40 R08: ffffffff8cd3a008 R09: 0000000000000001 [ 34.935976] R10: 0000000000000005 R11: 0000000000000001 R12: 0000000000000286 [ 34.943563] R13: ffff8880b0055238 R14: 0000000000000000 R15: ffff8880b0054d40 [ 34.951067] FS: 0000000001e79880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.959612] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.965551] CR2: 0000556a9ee03220 CR3: 0000000099031000 CR4: 00000000001406e0 [ 34.973087] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.980559] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.988017] Kernel panic - not syncing: Fatal exception [ 34.994467] Kernel Offset: disabled [ 34.998100] Rebooting in 86400 seconds..