[ 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 '10.128.15.192' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 67.669845][ T6905] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 67.681571][ T6905] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 67.690131][ T6905] CPU: 0 PID: 6905 Comm: syz-executor046 Not tainted 5.9.0-rc8-syzkaller #0 [ 67.698794][ T6905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.708840][ T6905] RIP: 0010:jffs2_parse_param+0x141/0x330 [ 67.714553][ T6905] Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 16 [ 67.734234][ T6905] RSP: 0018:ffffc90003f67b78 EFLAGS: 00010202 [ 67.740280][ T6905] RAX: dffffc0000000000 RBX: ffff88809e5c6400 RCX: ffffffff82883814 [ 67.748226][ T6905] RDX: 0000000000000001 RSI: ffffffff82883826 RDI: 0000000000000008 [ 67.756185][ T6905] RBP: 1ffff920007ecf6f R08: 0000000000000001 R09: 0000000000000003 [ 67.764146][ T6905] R10: 00000000003fffff R11: 0000000000000000 R12: 000000000000ac00 [ 67.772096][ T6905] R13: ffff888090cca000 R14: 0000000000000000 R15: 000000000000ac00 [ 67.780059][ T6905] FS: 000000000238a880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 67.788975][ T6905] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.795594][ T6905] CR2: 000000000043ea70 CR3: 00000000a8498000 CR4: 00000000001506f0 [ 67.803654][ T6905] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.811605][ T6905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.819557][ T6905] Call Trace: [ 67.822857][ T6905] ? jffs2_alloc_inode+0x40/0x40 [ 67.827782][ T6905] ? vfs_parse_fs_param+0x530/0x550 [ 67.833054][ T6905] ? jffs2_alloc_inode+0x40/0x40 [ 67.837966][ T6905] vfs_parse_fs_param+0x203/0x550 [ 67.842985][ T6905] vfs_parse_fs_string+0xe6/0x150 [ 67.848002][ T6905] ? vfs_parse_fs_param+0x550/0x550 [ 67.853202][ T6905] ? kmem_cache_alloc_trace+0x18e/0x300 [ 67.858729][ T6905] ? bpf_lsm_sb_eat_lsm_opts+0x5/0x10 [ 67.864193][ T6905] generic_parse_monolithic+0x16f/0x1f0 [ 67.871204][ T6905] ? vfs_parse_fs_string+0x150/0x150 [ 67.876478][ T6905] ? jffs2_get_parent+0x60/0x60 [ 67.881305][ T6905] ? alloc_fs_context+0x56e/0x880 [ 67.886354][ T6905] path_mount+0x133f/0x20a0 [ 67.890874][ T6905] ? strncpy_from_user+0x2bf/0x3e0 [ 67.895961][ T6905] ? copy_mount_string+0x40/0x40 [ 67.900874][ T6905] ? getname_flags.part.0+0x1dd/0x4f0 [ 67.906220][ T6905] __x64_sys_mount+0x27f/0x300 [ 67.911007][ T6905] ? copy_mnt_ns+0xa60/0xa60 [ 67.916105][ T6905] ? check_preemption_disabled+0x50/0x130 [ 67.921807][ T6905] ? syscall_enter_from_user_mode+0x1d/0x60 [ 67.927698][ T6905] do_syscall_64+0x2d/0x70 [ 67.932098][ T6905] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.937964][ T6905] RIP: 0033:0x446bda [ 67.941837][ T6905] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d ae 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 ae fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 67.961415][ T6905] RSP: 002b:00007ffe59c8ed68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 67.969820][ T6905] RAX: ffffffffffffffda RBX: 00007ffe59c8edb0 RCX: 0000000000446bda [ 67.977783][ T6905] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 0000000000000000 [ 67.985744][ T6905] RBP: 0000000000000080 R08: 00007ffe59c8edb0 R09: 0000000000000014 [ 67.993829][ T6905] R10: 0000000000000080 R11: 0000000000000246 R12: 0000000000401ec0 [ 68.001781][ T6905] R13: 0000000000401f50 R14: 0000000000000000 R15: 0000000000000000 [ 68.009760][ T6905] Modules linked in: [ 68.024322][ T6905] ---[ end trace 2c0da917c400a6e2 ]--- [ 68.030039][ T6905] RIP: 0010:jffs2_parse_param+0x141/0x330 [ 68.035741][ T6905] Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 16 [ 68.056250][ T6905] RSP: 0018:ffffc90003f67b78 EFLAGS: 00010202 [ 68.062803][ T6905] RAX: dffffc0000000000 RBX: ffff88809e5c6400 RCX: ffffffff82883814 [ 68.071659][ T6905] RDX: 0000000000000001 RSI: ffffffff82883826 RDI: 0000000000000008 [ 68.080296][ T6905] RBP: 1ffff920007ecf6f R08: 0000000000000001 R09: 0000000000000003 [ 68.088726][ T6905] R10: 00000000003fffff R11: 0000000000000000 R12: 000000000000ac00 [ 68.097062][ T6905] R13: ffff888090cca000 R14: 0000000000000000 R15: 000000000000ac00 [ 68.105873][ T6905] FS: 000000000238a880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 68.115273][ T6905] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.122253][ T6905] CR2: 00007f40c4321000 CR3: 00000000a8498000 CR4: 00000000001506f0 [ 68.130650][ T6905] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.139019][ T6905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.146981][ T6905] Kernel panic - not syncing: Fatal exception [ 68.154402][ T6905] Kernel Offset: disabled [ 68.158823][ T6905] Rebooting in 86400 seconds..