[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.165' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.166503][ T8437] loop0: detected capacity change from 0 to 131391 [ 72.179927][ T8437] REISERFS (device loop0): found reiserfs format "3.6" with standard journal [ 72.189184][ T8437] REISERFS (device loop0): using ordered data mode [ 72.195794][ T8437] reiserfs: using flush barriers [ 72.202701][ T8437] REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 72.222532][ T8437] REISERFS (device loop0): checking transaction log (loop0) [ 73.466762][ T8437] REISERFS (device loop0): Using rupasov hash to sort names [ 73.475092][ T8437] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 73.486806][ T8437] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 73.495411][ T8437] CPU: 1 PID: 8437 Comm: syz-executor023 Not tainted 5.12.0-rc4-next-20210322-syzkaller #0 [ 73.505380][ T8437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.515612][ T8437] RIP: 0010:reiserfs_security_init+0x28f/0x530 [ 73.521791][ T8437] Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 02 00 00 49 8b 87 a0 05 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 4d 02 00 00 48 83 78 68 00 0f 84 be 01 00 00 48 [ 73.542560][ T8437] RSP: 0018:ffffc900034f7970 EFLAGS: 00010202 [ 73.548632][ T8437] RAX: 0000000000000000 RBX: 0000000000000036 RCX: 000000000000000d [ 73.556593][ T8437] RDX: dffffc0000000000 RSI: 000000000000006c RDI: 0000000000000068 [ 73.565127][ T8437] RBP: ffff888035620798 R08: 0000000000000000 R09: ffffc900034f7a18 [ 73.573092][ T8437] R10: ffffffff820339a0 R11: 0000000000000000 R12: 000000000000057d [ 73.581066][ T8437] R13: ffff888026016000 R14: 0000000000000000 R15: ffff88801c597000 [ 73.589203][ T8437] FS: 0000000000cb2300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 73.598124][ T8437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.604696][ T8437] CR2: 00005556d78c82e8 CR3: 000000001d095000 CR4: 00000000001506e0 [ 73.613308][ T8437] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.621272][ T8437] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.629228][ T8437] Call Trace: [ 73.632494][ T8437] reiserfs_mkdir+0x2d0/0x980 [ 73.637160][ T8437] ? reiserfs_mknod+0x700/0x700 [ 73.642023][ T8437] ? down_write+0xe0/0x150 [ 73.646454][ T8437] ? down_write_killable+0x170/0x170 [ 73.651742][ T8437] ? down_write_killable+0x170/0x170 [ 73.657014][ T8437] reiserfs_xattr_init+0x4de/0xb60 [ 73.662133][ T8437] reiserfs_fill_super+0x2166/0x2e00 [ 73.667421][ T8437] ? reiserfs_remount+0x1580/0x1580 [ 73.672607][ T8437] ? lock_downgrade+0x6e0/0x6e0 [ 73.677450][ T8437] ? snprintf+0xbb/0xf0 [ 73.681608][ T8437] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 73.687314][ T8437] ? set_blocksize+0x1c1/0x3b0 [ 73.692066][ T8437] mount_bdev+0x34d/0x410 [ 73.696394][ T8437] ? reiserfs_remount+0x1580/0x1580 [ 73.701581][ T8437] ? reiserfs_kill_sb+0x1e0/0x1e0 [ 73.706593][ T8437] legacy_get_tree+0x105/0x220 [ 73.711352][ T8437] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.717602][ T8437] vfs_get_tree+0x89/0x2f0 [ 73.722028][ T8437] path_mount+0x132a/0x1fa0 [ 73.726521][ T8437] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.732767][ T8437] ? strncpy_from_user+0x2a0/0x3e0 [ 73.737878][ T8437] ? finish_automount+0xad0/0xad0 [ 73.742924][ T8437] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.749167][ T8437] ? getname_flags.part.0+0x1dd/0x4f0 [ 73.754543][ T8437] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.760806][ T8437] __x64_sys_mount+0x27f/0x300 [ 73.765643][ T8437] ? copy_mnt_ns+0xae0/0xae0 [ 73.770218][ T8437] ? syscall_enter_from_user_mode+0x27/0x70 [ 73.776116][ T8437] do_syscall_64+0x2d/0x70 [ 73.780526][ T8437] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.786407][ T8437] RIP: 0033:0x445b4a [ 73.790299][ T8437] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 73.809904][ T8437] RSP: 002b:00007ffc250d60b8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 73.818305][ T8437] RAX: ffffffffffffffda RBX: 00007ffc250d6110 RCX: 0000000000445b4a [ 73.826265][ T8437] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc250d60d0 [ 73.834219][ T8437] RBP: 00007ffc250d60d0 R08: 00007ffc250d6110 R09: 0000000000000000 [ 73.842178][ T8437] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000200002a8 [ 73.850135][ T8437] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000007 [ 73.858096][ T8437] Modules linked in: [ 73.862208][ T8437] ---[ end trace d91c66197c979349 ]--- [ 73.867699][ T8437] RIP: 0010:reiserfs_security_init+0x28f/0x530 [ 73.873880][ T8437] Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 02 00 00 49 8b 87 a0 05 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 4d 02 00 00 48 83 78 68 00 0f 84 be 01 00 00 48 [ 73.893563][ T8437] RSP: 0018:ffffc900034f7970 EFLAGS: 00010202 [ 73.899690][ T8437] RAX: 0000000000000000 RBX: 0000000000000036 RCX: 000000000000000d [ 73.907793][ T8437] RDX: dffffc0000000000 RSI: 000000000000006c RDI: 0000000000000068 [ 73.915772][ T8437] RBP: ffff888035620798 R08: 0000000000000000 R09: ffffc900034f7a18 [ 73.923787][ T8437] R10: ffffffff820339a0 R11: 0000000000000000 R12: 000000000000057d [ 73.931812][ T8437] R13: ffff888026016000 R14: 0000000000000000 R15: ffff88801c597000 [ 73.939951][ T8437] FS: 0000000000cb2300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 73.948941][ T8437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.955531][ T8437] CR2: 00005556d78c82e8 CR3: 000000001d095000 CR4: 00000000001506e0 [ 73.963531][ T8437] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.971565][ T8437] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.979590][ T8437] Kernel panic - not syncing: Fatal exception [ 73.986190][ T8437] Kernel Offset: disabled [ 73.990518][ T8437] Rebooting in 86400 seconds..