ci starts bisection 2023-01-31 16:28:02.53737435 +0000 UTC m=+767796.483436413 bisecting fixing commit since 1b929c02afd37871d5afb9d498426f83432e71c2 building syzkaller on 44712fbc6b687170984c3562336a415b56d82607 ensuring issue is reproducible on original commit 1b929c02afd37871d5afb9d498426f83432e71c2 testing commit 1b929c02afd37871d5afb9d498426f83432e71c2 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: b86ae9a25f36082fe612741dbc352448b03d6dae27e74596ddb94b81b16c721d all runs: crashed: WARNING in bpf_verifier_vlog testing current HEAD 9f266ccaa2f5228bfe67ad58a94ca4e0109b954a testing commit 9f266ccaa2f5228bfe67ad58a94ca4e0109b954a gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 5ecf769581f5d08b007c3fa9f2591d64dc148e12d3e1bdaadf75b3bdc191208d all runs: crashed: WARNING in bpf_verifier_vlog revisions tested: 2, total time: 26m2.915817885s (build: 18m59.443799469s, test: 6m29.671121842s) the crash still happens on HEAD commit msg: Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost crash: WARNING in bpf_verifier_vlog ------------[ cut here ]------------ verifier log line truncated - local buffer too short WARNING: CPU: 0 PID: 5603 at kernel/bpf/verifier.c:301 bpf_verifier_vlog+0x202/0x330 kernel/bpf/verifier.c:301 Modules linked in: CPU: 0 PID: 5603 Comm: syz-executor.0 Not tainted 6.2.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:bpf_verifier_vlog+0x202/0x330 kernel/bpf/verifier.c:301 Code: 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 80 3d 36 f6 c8 0b 00 75 15 48 c7 c7 80 29 72 89 c6 05 26 f6 c8 0b 01 e8 28 76 66 07 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 04 RSP: 0018:ffffc900031cf8a8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880169c8210 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff52000639f07 RBP: ffffc900031cf9a0 R08: 0000000000000001 R09: ffff8880b9a2894b R10: ffffed1017345129 R11: 0000000000000000 R12: ffff8880169c8000 R13: 00000000000003ff R14: ffff8880169c8214 R15: ffffffff8973cbe0 FS: 00007f25a82b8700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020100000 CR3: 000000002218e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __btf_verifier_log+0xa6/0xd0 kernel/bpf/btf.c:1370 __btf_verifier_log_type+0x39b/0x9c0 kernel/bpf/btf.c:1407 btf_func_proto_check_meta+0x114/0x120 kernel/bpf/btf.c:4213 btf_check_meta kernel/bpf/btf.c:4907 [inline] btf_check_all_metas+0x318/0xb10 kernel/bpf/btf.c:4931 btf_parse_type_sec kernel/bpf/btf.c:5067 [inline] btf_parse kernel/bpf/btf.c:5459 [inline] btf_new_fd+0x66d/0x2810 kernel/bpf/btf.c:7068 bpf_btf_load kernel/bpf/syscall.c:4328 [inline] __sys_bpf+0x1092/0x3cb0 kernel/bpf/syscall.c:5014 __do_sys_bpf kernel/bpf/syscall.c:5073 [inline] __se_sys_bpf kernel/bpf/syscall.c:5071 [inline] __x64_sys_bpf+0x74/0xb0 kernel/bpf/syscall.c:5071 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f25a748c0a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f25a82b8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f25a75abf80 RCX: 00007f25a748c0a9 RDX: 0000000000000020 RSI: 0000000020000240 RDI: 0000000000000012 RBP: 00007f25a74e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc8edcacbf R14: 00007f25a82b8300 R15: 0000000000022000