Hello:
This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Thu, 3 Feb 2022 11:17:27 -0800 you wrote:
> syzbot reported a btf decl_tag bug with stack trace below:
>
> general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
> KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
> CPU: 0 PID: 3592 Comm: syz-executor914 Not tainted 5.16.0-syzkaller-11424-gb7892f7d5cb2 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> RIP: 0010:btf_type_vlen include/linux/btf.h:231 [inline]
> RIP: 0010:btf_decl_tag_resolve+0x83e/0xaa0 kernel/bpf/btf.c:3910
> ...
> Call Trace:
> <TASK>
> btf_resolve+0x251/0x1020 kernel/bpf/btf.c:4198
> btf_check_all_types kernel/bpf/btf.c:4239 [inline]
> btf_parse_type_sec kernel/bpf/btf.c:4280 [inline]
> btf_parse kernel/bpf/btf.c:4513 [inline]
> btf_new_fd+0x19fe/0x2370 kernel/bpf/btf.c:6047
> bpf_btf_load kernel/bpf/syscall.c:4039 [inline]
> __sys_bpf+0x1cbb/0x5970 kernel/bpf/syscall.c:4679
> __do_sys_bpf kernel/bpf/syscall.c:4738 [inline]
> __se_sys_bpf kernel/bpf/syscall.c:4736 [inline]
> __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4736
> do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> entry_SYSCALL_64_after_hwframe+0x44/0xae
>
> [...]
Here is the summary with links:
- [bpf,1/2] bpf: fix a btf decl_tag bug when tagging a function
https://git.kernel.org/bpf/bpf-next/c/d7e7b42f4f95
- [bpf,2/2] selftests/bpf: add a selftest for invalid func btf with btf decl_tag
https://git.kernel.org/bpf/bpf-next/c/cf1a4cbce63b
You are awesome, thank you!
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