Hello, syzbot found the following issue on: HEAD commit: 7ada3787e91c bpf: Check for NULL return from bpf_get_btf_v.. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=14079871700000 kernel config: https://syzkaller.appspot.com/x/.config?x=820db791969fe863 dashboard link: https://syzkaller.appspot.com/bug?extid=c946805b5ce6ab87df0b compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c946805b5ce6ab87df0b@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ bpf_prog_pack bug WARNING: CPU: 0 PID: 8 at kernel/bpf/core.c:947 bpf_prog_pack_free+0x2fc/0x3a0 kernel/bpf/core.c:947 Modules linked in: CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 5.17.0-rc6-syzkaller-02056-g7ada3787e91c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events bpf_prog_free_deferred RIP: 0010:bpf_prog_pack_free+0x2fc/0x3a0 kernel/bpf/core.c:947 Code: 0b 31 ff 89 de e8 64 44 f3 ff 84 db 0f 85 82 fe ff ff e8 d7 41 f3 ff 48 c7 c7 60 df b2 89 c6 05 e2 99 fa 0b 01 e8 6b 10 87 07 <0f> 0b e9 63 fe ff ff e8 b8 41 f3 ff 0f 0b 0f 0b 41 be ff ff ff ff RSP: 0000:ffffc900000d7c60 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888010e65700 RSI: ffffffff815fe3a8 RDI: fffff5200001af7e RBP: ffffffff8bc177e0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815f8a3e R11: 0000000000000000 R12: ffff8881449f4010 R13: ffffffffa0400000 R14: ffffffffa0600640 R15: 0000000000000540 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000b88e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> bpf_jit_binary_pack_free kernel/bpf/core.c:1151 [inline] bpf_jit_free+0x11d/0x2b0 kernel/bpf/core.c:1180 bpf_prog_free_deferred+0x5c1/0x790 kernel/bpf/core.c:2553 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> --- 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.
