Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 64.888779][ T6880] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 64.898319][ T6880] REISERFS (device loop0): using ordered data mode [ 64.904838][ T6880] reiserfs: using flush barriers [ 64.912268][ T6880] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 64.932512][ T6880] REISERFS (device loop0): checking transaction log (loop0) [ 66.849680][ T6880] REISERFS (device loop0): Using tea hash to sort names [ 66.857370][ T6880] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 66.869072][ T6880] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 66.877533][ T6880] CPU: 1 PID: 6880 Comm: syz-executor795 Not tainted 5.9.0-rc5-next-20200918-syzkaller #0 [ 66.887405][ T6880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.897459][ T6880] RIP: 0010:reiserfs_security_init+0x285/0x4d0 [ 66.903711][ T6880] Code: 48 c1 ea 03 80 3c 02 00 0f 85 2b 02 00 00 4d 8b ad a0 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 23 02 00 00 49 83 7d 68 00 0f 84 62 01 00 00 48 [ 66.923301][ T6880] RSP: 0018:ffffc90006157980 EFLAGS: 00010202 [ 66.929350][ T6880] RAX: dffffc0000000000 RBX: 0000000000000036 RCX: 000000000000006c [ 66.937301][ T6880] RDX: 000000000000000d RSI: ffffffff81ff7ea3 RDI: 0000000000000068 [ 66.945250][ T6880] RBP: ffff88807ed041d0 R08: ffffc90006157a10 R09: ffffc90006157a18 [ 66.953198][ T6880] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000005fa [ 66.961148][ T6880] R13: 0000000000000000 R14: ffff88808d69a000 R15: 0000000000000000 [ 66.969109][ T6880] FS: 00000000021d3880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 66.978088][ T6880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.984660][ T6880] CR2: 000055e28843b908 CR3: 00000000a7eed000 CR4: 00000000001506e0 [ 66.992613][ T6880] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.000568][ T6880] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.008519][ T6880] Call Trace: [ 67.011795][ T6880] reiserfs_mkdir+0x2c9/0x980 [ 67.016501][ T6880] ? reiserfs_mknod+0x700/0x700 [ 67.021336][ T6880] ? down_write+0xdb/0x150 [ 67.025795][ T6880] ? down_write_killable+0x170/0x170 [ 67.031062][ T6880] ? down_write_killable+0x170/0x170 [ 67.036331][ T6880] reiserfs_xattr_init+0x4de/0xb60 [ 67.041442][ T6880] reiserfs_fill_super+0x215d/0x2e00 [ 67.046710][ T6880] ? reiserfs_remount+0x1580/0x1580 [ 67.051888][ T6880] ? lock_downgrade+0x830/0x830 [ 67.056719][ T6880] ? snprintf+0xbb/0xf0 [ 67.060877][ T6880] ? wait_for_completion+0x260/0x260 [ 67.066153][ T6880] ? set_blocksize+0x1c1/0x400 [ 67.070897][ T6880] mount_bdev+0x32e/0x3f0 [ 67.075229][ T6880] ? reiserfs_remount+0x1580/0x1580 [ 67.080404][ T6880] ? reiserfs_kill_sb+0x1e0/0x1e0 [ 67.085406][ T6880] legacy_get_tree+0x105/0x220 [ 67.090151][ T6880] vfs_get_tree+0x89/0x2f0 [ 67.094546][ T6880] path_mount+0x12ae/0x1e70 [ 67.099031][ T6880] ? strncpy_from_user+0x29e/0x3a0 [ 67.104125][ T6880] ? copy_mount_string+0x40/0x40 [ 67.109042][ T6880] ? getname_flags.part.0+0x1dd/0x4f0 [ 67.114393][ T6880] __x64_sys_mount+0x27f/0x300 [ 67.119137][ T6880] ? copy_mnt_ns+0xae0/0xae0 [ 67.123722][ T6880] ? check_preemption_disabled+0x50/0x130 [ 67.129420][ T6880] ? syscall_enter_from_user_mode+0x1d/0x60 [ 67.135299][ T6880] do_syscall_64+0x2d/0x70 [ 67.139694][ T6880] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.145583][ T6880] RIP: 0033:0x447dba [ 67.149459][ T6880] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d a3 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 5a a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 67.169043][ T6880] RSP: 002b:00007fff8df28c18 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 67.178065][ T6880] RAX: ffffffffffffffda RBX: 00007fff8df28c70 RCX: 0000000000447dba [ 67.186025][ T6880] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff8df28c30 [ 67.193980][ T6880] RBP: 00007fff8df28c30 R08: 00007fff8df28c70 R09: 0000000000000000 [ 67.201931][ T6880] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000007 [ 67.209882][ T6880] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 67.217838][ T6880] Modules linked in: [ 67.232478][ T6880] ---[ end trace 7880f1913a12ce2b ]--- [ 67.238013][ T6880] RIP: 0010:reiserfs_security_init+0x285/0x4d0 [ 67.244174][ T6880] Code: 48 c1 ea 03 80 3c 02 00 0f 85 2b 02 00 00 4d 8b ad a0 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 23 02 00 00 49 83 7d 68 00 0f 84 62 01 00 00 48 [ 67.264241][ T6880] RSP: 0018:ffffc90006157980 EFLAGS: 00010202 [ 67.270502][ T6880] RAX: dffffc0000000000 RBX: 0000000000000036 RCX: 000000000000006c [ 67.278818][ T6880] RDX: 000000000000000d RSI: ffffffff81ff7ea3 RDI: 0000000000000068 [ 67.286844][ T6880] RBP: ffff88807ed041d0 R08: ffffc90006157a10 R09: ffffc90006157a18 [ 67.294820][ T6880] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000005fa [ 67.302823][ T6880] R13: 0000000000000000 R14: ffff88808d69a000 R15: 0000000000000000 [ 67.310853][ T6880] FS: 00000000021d3880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 67.319843][ T6880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.326491][ T6880] CR2: 00007f7074040098 CR3: 00000000a7eed000 CR4: 00000000001506f0 [ 67.334451][ T6880] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.342449][ T6880] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.350472][ T6880] Kernel panic - not syncing: Fatal exception [ 67.357733][ T6880] Kernel Offset: disabled [ 67.362102][ T6880] Rebooting in 86400 seconds..