Messages in this thread | | | Subject | Re: [syzbot] [bpf?] WARNING: bad unlock balance in bpf | From | Daniel Borkmann <> | Date | Fri, 26 May 2023 14:52:31 +0200 |
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On 5/26/23 12:10 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: c4c84f6fb2c4 bpf: drop unnecessary bpf_capable() check in .. > git tree: bpf-next > console+strace: https://syzkaller.appspot.com/x/log.txt?x=119576a9280000 > kernel config: https://syzkaller.appspot.com/x/.config?x=8bc832f563d8bf38 > dashboard link: https://syzkaller.appspot.com/bug?extid=8982e75c2878b9ffeac5 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10391dde280000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=137da9c5280000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/3cb57feeb883/disk-c4c84f6f.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/7ccb6d78c42d/vmlinux-c4c84f6f.xz > kernel image: https://storage.googleapis.com/syzbot-assets/fb02c9cdb21c/bzImage-c4c84f6f.xz > > The issue was bisected to: > > commit c4c84f6fb2c4dc4c0f5fd927b3c3d3fd28b7030e > Author: Andrii Nakryiko <andrii@kernel.org> > Date: Wed May 24 22:54:19 2023 +0000 > > bpf: drop unnecessary bpf_capable() check in BPF_MAP_FREEZE command > [...]
Fyi, fixed this up today in bpf-next tree.
#syz fix: bpf: Fix bad unlock balance on freeze_mutex
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