Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 1 Apr 2024 11:55:17 -0700 | Subject | Re: [syzbot] [bpf?] KMSAN: uninit-value in trie_delete_elem | From | Yonghong Song <> |
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On 3/26/24 12:00 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 4f55aa85a874 Merge tag 'fbdev-for-6.9-rc1' of git://git.ke.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=11a8dc6e180000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e6bd769cb793b98a > dashboard link: https://syzkaller.appspot.com/bug?extid=603bcd9b0bf1d94dbb9b > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > userspace arch: i386 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/991fcbce770a/disk-4f55aa85.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/bd716e5d2c3c/vmlinux-4f55aa85.xz > kernel image: https://storage.googleapis.com/syzbot-assets/bf1151dbf5fc/bzImage-4f55aa85.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+603bcd9b0bf1d94dbb9b@syzkaller.appspotmail.com > > ===================================================== > BUG: KMSAN: uninit-value in trie_delete_elem+0xc0/0xbe0 kernel/bpf/lpm_trie.c:448
Unrelated to the bug itself, with KMSAN is enabled, qemu cannot boot my vm any more. Anything special I need to do in order to boot a KMSAN kernel?
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