Re: general protection fault in unlink_file_vma

From: syzbot
Date: Wed Sep 16 2020 - 00:24:10 EST


syzbot has tested the proposed patch but the reproducer is still triggering an issue:
kernel panic: Fatal exception

RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffd30630720 R11: 0000000000000000 R12: 000000000118d940
R13: 000000000118d940 R14: ffffffffffffffff R15: 000000000118cfec
FS: 0000000001b47940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0033 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001590004 CR3: 0000000021097000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Kernel panic - not syncing: Fatal exception
Kernel Offset: disabled

Tested on:

commit: 8f79400b fix vma_merge gpf
git tree: vma_merge_fix
console output:
kernel config:
dashboard link:
compiler: gcc (GCC) 10.1.0-syz 20200507