syzbot suspects this issue was fixed by commit:
commit a97915559f5c5ff1972d678b94fd460c72a3b5f2 Author: JP Kobryn inwardvessel@gmail.com Date: Fri Apr 4 01:10:48 2025 +0000
cgroup: change rstat function signatures from cgroup-based to css-based
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12ca4c82580000 start commit: 932fc2f19b74 Merge branch 'irq-save-restore' git tree: bpf-next kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 dashboard link: https://syzkaller.appspot.com/bug?extid=31eb4d4e7d9bc1fc1312 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=161cdfc0580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12dfc8df980000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: cgroup: change rstat function signatures from cgroup-based to css-based
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
On Sun, Jun 01, 2025 at 09:21:02AM -0700, syzbot syzbot+31eb4d4e7d9bc1fc1312@syzkaller.appspotmail.com wrote:
syzbot suspects this issue was fixed by commit:
commit a97915559f5c5ff1972d678b94fd460c72a3b5f2 Author: JP Kobryn inwardvessel@gmail.com Date: Fri Apr 4 01:10:48 2025 +0000
cgroup: change rstat function signatures from cgroup-based to css-based
It says: "This non-functional change serves..."
However, it moves the *_rstat_init in cgroup_create() after kernfs dir creation and given the reproducer has a fault injected: mkdir(&(0x7f0000000000)='./cgroup/file0\x00', 0xd0939199c36b4d28) (fail_nth: 8)
I'd say this might be relevant (although I don't see the possibly incorrect error handlnig path) but it doesn't mean this commit fixes it, it'd rather require the reproducer to adjust the N on this path.
0.02€, Michal
linux-kselftest-mirror@lists.linaro.org
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Michal Koutný -
syzbot