[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.101' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 455.262283] kasan: CONFIG_KASAN_INLINE enabled [ 455.267022] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 455.278585] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 455.284852] CPU: 1 PID: 8117 Comm: syz-executor523 Not tainted 4.19.211-syzkaller #0 [ 455.293695] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 455.303055] RIP: 0010:dtSplitUp+0x1414/0x4e70 [ 455.307537] Code: d6 eb fe 48 8b 54 24 58 48 8b 44 24 20 4c 8d 62 e8 4c 89 20 e8 dd d6 eb fe 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 2f 39 00 00 49 8b 34 24 31 ff 48 89 74 24 20 e8 [ 455.326422] RSP: 0018:ffff88808d347740 EFLAGS: 00010246 [ 455.331764] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8276ae27 [ 455.339022] RDX: 0000000000000000 RSI: ffffffff8276ae93 RDI: 0000000000000003 [ 455.346365] RBP: ffff88808cc1b66a R08: 0000000000000001 R09: 0000000000000000 [ 455.353650] R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 [ 455.360934] R13: ffff88808cc1b468 R14: ffff88808cc1b5a8 R15: 0000000000000000 [ 455.368323] FS: 0000555555f50300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 455.376528] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 455.382385] CR2: 00007f73b73ac658 CR3: 0000000098996000 CR4: 00000000003406e0 [ 455.389633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 455.396896] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 455.404159] Call Trace: [ 455.406728] ? save_trace+0xd6/0x290 [ 455.410418] ? __lock_acquire+0x22f9/0x3ff0 [ 455.414722] ? dtSplitRoot+0x1590/0x1590 [ 455.418764] ? do_mknodat.part.0+0x2ff/0x480 [ 455.423156] ? __x64_sys_mknodat+0x116/0x160 [ 455.427538] ? do_syscall_64+0xf9/0x620 [ 455.431489] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 455.436832] ? debug_check_no_obj_freed+0x201/0x490 [ 455.441829] ? lock_downgrade+0x720/0x720 [ 455.445953] ? txLockAlloc+0x211/0x2e0 [ 455.449824] ? txLock+0x6b1/0x1bd0 [ 455.453357] ? lock_downgrade+0x720/0x720 [ 455.457485] ? lock_acquire+0x170/0x3c0 [ 455.461467] ? txLock+0x9e/0x1bd0 [ 455.464905] dtInsert+0x7fd/0xa00 [ 455.468341] ? dtSearch+0x1ef0/0x1ef0 [ 455.472120] ? txEnd+0x320/0x320 [ 455.475492] ? posix_acl_create+0x109/0x170 [ 455.479808] jfs_create.part.0+0x3c6/0x880 [ 455.484034] ? jfs_mkdir+0x60/0x60 [ 455.487570] ? lock_downgrade+0x720/0x720 [ 455.491786] ? debug_check_no_obj_freed+0xb5/0x490 [ 455.496795] ? rwsem_down_read_failed_killable+0x2e0/0x580 [ 455.502400] ? __dquot_initialize+0x298/0xb70 [ 455.506873] ? userns_put+0xb0/0xb0 [ 455.510482] ? dquot_initialize_needed+0x290/0x290 [ 455.515393] ? generic_permission+0x116/0x4d0 [ 455.519877] ? security_inode_permission+0xc5/0xf0 [ 455.524786] jfs_create+0x3f/0x60 [ 455.528219] vfs_create+0x461/0x6c0 [ 455.531826] do_mknodat.part.0+0x2ff/0x480 [ 455.536039] ? kern_path_create+0x40/0x40 [ 455.540167] ? fput+0x2b/0x190 [ 455.543339] __x64_sys_mknodat+0x116/0x160 [ 455.547551] do_syscall_64+0xf9/0x620 [ 455.551332] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 455.556520] RIP: 0033:0x7ff0c7e1ee99 [ 455.560333] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 455.579217] RSP: 002b:00007ffc969299f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 [ 455.586907] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007ff0c7e1ee99 [ 455.594153] RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000003 [ 455.602007] RBP: 00007ff0c7dde700 R08: 0000000000000000 R09: 0000000000000000 [ 455.609257] R10: 0000000000000103 R11: 0000000000000246 R12: 00000000f8008000 [ 455.616508] R13: 0000000000000000 R14: 00083878000000f4 R15: 0000000000000000 [ 455.623764] Modules linked in: [ 455.628849] ---[ end trace 5564f1e64822ba28 ]--- [ 455.633632] RIP: 0010:dtSplitUp+0x1414/0x4e70 [ 455.638133] Code: d6 eb fe 48 8b 54 24 58 48 8b 44 24 20 4c 8d 62 e8 4c 89 20 e8 dd d6 eb fe 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 2f 39 00 00 49 8b 34 24 31 ff 48 89 74 24 20 e8 [ 455.657253] RSP: 0018:ffff88808d347740 EFLAGS: 00010246 [ 455.662678] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8276ae27 [ 455.670935] RDX: 0000000000000000 RSI: ffffffff8276ae93 RDI: 0000000000000003 [ 455.678192] RBP: ffff88808cc1b66a R08: 0000000000000001 R09: 0000000000000000 [ 455.685494] R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 [ 455.692836] R13: ffff88808cc1b468 R14: ffff88808cc1b5a8 R15: 0000000000000000 [ 455.700144] FS: 0000555555f50300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 455.708364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 455.714288] CR2: 000055b0141a20e0 CR3: 0000000098996000 CR4: 00000000003406f0 [ 455.721619] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 455.728915] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 455.736182] Kernel panic - not syncing: Fatal exception [ 455.741802] Kernel Offset: disabled [ 455.745423] Rebooting in 86400 seconds..