On 4/1/21 4:29 AM, syzbot wrote:
Hello, syzbot found the following issue on: HEAD commit: 36e79851 libbpf: Preserve empty DATASEC BTFs during static.. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=1569bb06d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7eff0f22b8563a5f dashboard link: https://syzkaller.appspot.com/bug?extid=774c590240616eaa3423 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17556b7cd00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1772be26d00000 The issue was bisected to: commit 997acaf6b4b59c6a9c259740312a69ea549cc684 Author: Mark Rutland <mark.rutland@xxxxxxx> Date: Mon Jan 11 15:37:07 2021 +0000 lockdep: report broken irq restoration bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10197016d00000 final oops: https://syzkaller.appspot.com/x/report.txt?x=12197016d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=14197016d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+774c590240616eaa3423@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 997acaf6b4b5 ("lockdep: report broken irq restoration") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8725 at include/linux/bpf-cgroup.h:193 bpf_cgroup_storage_set include/linux/bpf-cgroup.h:193 [inline] WARNING: CPU: 0 PID: 8725 at include/linux/bpf-cgroup.h:193 bpf_test_run+0x65e/0xaa0 net/bpf/test_run.c:109
I will look at this issue. Thanks!
Modules linked in: CPU: 0 PID: 8725 Comm: syz-executor927 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_cgroup_storage_set include/linux/bpf-cgroup.h:193 [inline] RIP: 0010:bpf_test_run+0x65e/0xaa0 net/bpf/test_run.c:109 Code: e9 29 fe ff ff e8 b2 9d 3a fa 41 83 c6 01 bf 08 00 00 00 44 89 f6 e8 51 a5 3a fa 41 83 fe 08 0f 85 74 fc ff ff e8 92 9d 3a fa <0f> 0b bd f0 ff ff ff e9 5c fd ff ff e8 81 9d 3a fa 83 c5 01 bf 08 RSP: 0018:ffffc900017bfaf0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc90000f29000 RCX: 0000000000000000 RDX: ffff88801bc68000 RSI: ffffffff8739543e RDI: 0000000000000003 RBP: 0000000000000007 R08: 0000000000000008 R09: 0000000000000001 R10: ffffffff8739542f R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888021dd54c0 R14: 0000000000000008 R15: 0000000000000000 FS: 00007f00157d7700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0015795718 CR3: 00000000157ae000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_prog_test_run_skb+0xabc/0x1c70 net/bpf/test_run.c:628 bpf_prog_test_run kernel/bpf/syscall.c:3132 [inline] __do_sys_bpf+0x218b/0x4f40 kernel/bpf/syscall.c:4411 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x446199 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f00157d72f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004cb440 RCX: 0000000000446199 RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a RBP: 000000000049b074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: f9abde7200f522cd R13: 3952ddf3af240c07 R14: 1631e0d82d3fa99d R15: 00000000004cb448 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
