| TITLE: KMSAN: uninit-value in vti6_ioctl |
| |
| syzkaller login: [ 44.865333] ================================================================== |
| [ 44.872739] BUG: KMSAN: uninit-value in strlcpy+0x68/0x1c0 |
| [ 44.878347] CPU: 1 PID: 4514 Comm: syz-executor022 Not tainted 4.16.0+ #87 |
| [ 44.885339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 44.894694] Call Trace: |
| [ 44.897273] dump_stack+0x185/0x1d0 |
| [ 44.900894] ? strlcpy+0x68/0x1c0 |
| [ 44.904330] kmsan_report+0x142/0x240 |
| [ 44.908119] __msan_warning_32+0x6c/0xb0 |
| [ 44.912173] strlcpy+0x68/0x1c0 |
| [ 44.915436] vti6_ioctl+0x1cea/0x3410 |
| [ 44.919230] ? vti6_tnl_xmit+0x2070/0x2070 |
| [ 44.923444] dev_ifsioc+0x8a8/0x10c0 |
| [ 44.927139] ? _cond_resched+0x3c/0xd0 |
| [ 44.931008] dev_ioctl+0xc3e/0x1cf0 |
| [ 44.934625] ? kmsan_set_origin+0x9e/0x160 |
| [ 44.938865] sock_ioctl+0x744/0xca0 |
| [ 44.942647] ? sock_poll+0x370/0x370 |
| [ 44.946373] do_vfs_ioctl+0xaf0/0x2440 |
| [ 44.950299] ? __msan_metadata_ptr_for_load_4+0x10/0x20 |
| [ 44.955672] ? __fget_light+0x1f5/0x710 |
| [ 44.959657] ? __msan_metadata_ptr_for_load_8+0x10/0x20 |
| [ 44.965033] SYSC_ioctl+0x1d2/0x260 |
| [ 44.968659] SyS_ioctl+0x54/0x80 |
| [ 44.972030] do_syscall_64+0x309/0x430 |
| [ 44.975910] ? ioctl_file_clone+0x4f0/0x4f0 |
| [ 44.980218] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 |
| [ 44.985389] RIP: 0033:0x43fe59 |
| [ 44.988556] RSP: 002b:00007ffeb63ff5b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000010 |
| [ 44.996253] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fe59 |
| [ 45.003592] RDX: 0000000020000000 RSI: 08000000000089f1 RDI: 0000000000000003 |
| [ 45.010853] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 |
| [ 45.018121] R10: 00000000004002c8 R11: 0000000000000286 R12: 0000000000401780 |
| [ 45.025377] R13: 0000000000401810 R14: 0000000000000000 R15: 0000000000000000 |
| [ 45.032627] |
| [ 45.034232] Local variable description: ----p1@vti6_ioctl |
| [ 45.039742] Variable was created at: |
| [ 45.043440] vti6_ioctl+0xc1/0x3410 |
| [ 45.047060] dev_ifsioc+0x8a8/0x10c0 |
| [ 45.050756] ================================================================== |
