Re: [syzbot] [mm?] possible deadlock in __mmap_lock_do_trace_start_locking
From: syzbot
Date: Sun Jun 16 2024 - 10:05:17 EST
syzbot has bisected this issue to:
commit 21c38a3bd4ee3fb7337d013a638302fb5e5f9dc2
Author: Jesper Dangaard Brouer <hawk@xxxxxxxxxx>
Date: Wed May 1 14:04:11 2024 +0000
cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16695261980000
start commit: 36534d3c5453 tcp: use signed arithmetic in tcp_rtx_probe0_..
git tree: bpf
final oops: https://syzkaller.appspot.com/x/report.txt?x=15695261980000
console output: https://syzkaller.appspot.com/x/log.txt?x=11695261980000
kernel config: https://syzkaller.appspot.com/x/.config?x=333ebe38d43c42e2
dashboard link: https://syzkaller.appspot.com/bug?extid=6ff90931779bcdfc840c
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1585acfa980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17bdb7ee980000
Reported-by: syzbot+6ff90931779bcdfc840c@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 21c38a3bd4ee ("cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection