Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.65' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 58.468319][ T6874] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 58.478228][ T6874] REISERFS (device loop0): using ordered data mode [ 58.486536][ T6874] reiserfs: using flush barriers [ 58.493645][ T6874] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 58.516136][ T6874] REISERFS (device loop0): checking transaction log (loop0) [ 60.507242][ T6874] REISERFS (device loop0): Using tea hash to sort names [ 60.514499][ T6874] REISERFS (device loop0): using 3.5.x disk format [ 60.521266][ T6874] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 60.533019][ T6874] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 60.541503][ T6874] CPU: 0 PID: 6874 Comm: syz-executor834 Not tainted 5.9.0-rc5-syzkaller #0 [ 60.550163][ T6874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.560210][ T6874] RIP: 0010:reiserfs_security_init+0x285/0x4d0 [ 60.566357][ T6874] 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 [ 60.585951][ T6874] RSP: 0018:ffffc90005827980 EFLAGS: 00010202 [ 60.591999][ T6874] RAX: dffffc0000000000 RBX: 0000000000000036 RCX: 000000000000006c [ 60.599948][ T6874] RDX: 000000000000000d RSI: ffffffff82009dd3 RDI: 0000000000000068 [ 60.607916][ T6874] RBP: ffff88807d8441d0 R08: ffffc90005827a10 R09: ffffc90005827a18 [ 60.615956][ T6874] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000005fa [ 60.623914][ T6874] R13: 0000000000000000 R14: ffff888094e60000 R15: 0000000000000000 [ 60.631875][ T6874] FS: 0000000001036880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 60.640792][ T6874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.647354][ T6874] CR2: 00007f5a6fb90ab4 CR3: 000000009a1ab000 CR4: 00000000001506f0 [ 60.655302][ T6874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.663252][ T6874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.671203][ T6874] Call Trace: [ 60.674475][ T6874] reiserfs_mkdir+0x2c9/0x980 [ 60.679130][ T6874] ? reiserfs_mknod+0x700/0x700 [ 60.683957][ T6874] ? down_write+0xdb/0x150 [ 60.688348][ T6874] ? down_write_killable+0x170/0x170 [ 60.693606][ T6874] ? down_write_killable+0x170/0x170 [ 60.698893][ T6874] reiserfs_xattr_init+0x4de/0xb52 [ 60.703987][ T6874] reiserfs_fill_super+0x215d/0x2df3 [ 60.709248][ T6874] ? reiserfs_remount+0x1580/0x1580 [ 60.714525][ T6874] ? lock_downgrade+0x830/0x830 [ 60.719360][ T6874] ? snprintf+0xbb/0xf0 [ 60.723518][ T6874] ? wait_for_completion+0x260/0x260 [ 60.728792][ T6874] ? set_blocksize+0x1c1/0x400 [ 60.733532][ T6874] mount_bdev+0x32e/0x3f0 [ 60.737870][ T6874] ? reiserfs_remount+0x1580/0x1580 [ 60.743042][ T6874] ? reiserfs_kill_sb+0x1e0/0x1e0 [ 60.748048][ T6874] legacy_get_tree+0x105/0x220 [ 60.752814][ T6874] vfs_get_tree+0x89/0x2f0 [ 60.757218][ T6874] path_mount+0x1387/0x20a0 [ 60.761697][ T6874] ? strncpy_from_user+0x2bf/0x3e0 [ 60.766782][ T6874] ? copy_mount_string+0x40/0x40 [ 60.771703][ T6874] ? getname_flags.part.0+0x1dd/0x4f0 [ 60.777066][ T6874] __x64_sys_mount+0x27f/0x300 [ 60.781822][ T6874] ? copy_mnt_ns+0xa60/0xa60 [ 60.786397][ T6874] ? check_preemption_disabled+0x50/0x130 [ 60.792103][ T6874] ? syscall_enter_from_user_mode+0x1d/0x60 [ 60.797972][ T6874] do_syscall_64+0x2d/0x70 [ 60.802365][ T6874] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.808250][ T6874] RIP: 0033:0x447d9a [ 60.812134][ T6874] 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 [ 60.831728][ T6874] RSP: 002b:00007fffe558f5c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 60.840140][ T6874] RAX: ffffffffffffffda RBX: 00007fffe558f620 RCX: 0000000000447d9a [ 60.848103][ T6874] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffe558f5e0 [ 60.857006][ T6874] RBP: 00007fffe558f5e0 R08: 00007fffe558f620 R09: 0000000000000000 [ 60.864954][ T6874] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006 [ 60.872918][ T6874] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 60.880866][ T6874] Modules linked in: [ 60.891814][ T6874] ---[ end trace e6a0a9f4ee2cea86 ]--- [ 60.897290][ T6874] RIP: 0010:reiserfs_security_init+0x285/0x4d0 [ 60.903508][ T6874] 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 [ 60.923165][ T6874] RSP: 0018:ffffc90005827980 EFLAGS: 00010202 [ 60.929221][ T6874] RAX: dffffc0000000000 RBX: 0000000000000036 RCX: 000000000000006c [ 60.937226][ T6874] RDX: 000000000000000d RSI: ffffffff82009dd3 RDI: 0000000000000068 [ 60.945252][ T6874] RBP: ffff88807d8441d0 R08: ffffc90005827a10 R09: ffffc90005827a18 [ 60.953266][ T6874] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000005fa [ 60.961968][ T6874] R13: 0000000000000000 R14: ffff888094e60000 R15: 0000000000000000 [ 60.969938][ T6874] FS: 0000000001036880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 60.978895][ T6874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.985530][ T6874] CR2: 00007ff7d575b000 CR3: 000000009a1ab000 CR4: 00000000001506f0 [ 60.993561][ T6874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.001572][ T6874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.009538][ T6874] Kernel panic - not syncing: Fatal exception [ 61.016662][ T6874] Kernel Offset: disabled [ 61.020990][ T6874] Rebooting in 86400 seconds..