Hello, syzbot found the following issue on: HEAD commit: b1dfc0f76231 net: phy: skip LED triggers on PHYs on SFP mo.. git tree: net console+strace: https://syzkaller.appspot.com/x/log.txt?x=15d0331ee80000 kernel config: https://syzkaller.appspot.com/x/.config?x=e043d554f0a5f852 dashboard link: https://syzkaller.appspot.com/bug?extid=46700eea57ecc7f84776 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=128c8ad1e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12456fb6e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fcd0802bfd92/disk-b1dfc0f7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d3d9e5ecc7f0/vmlinux-b1dfc0f7.xz kernel image: https://storage.googleapis.com/syzbot-assets/4b04f82a5ed6/bzImage-b1dfc0f7.xz The issue was bisected to: commit f63181b6ae79fd3b034cde641db774268c2c3acf Author: Andrii Nakryiko <andrii@xxxxxxxxxx> Date: Fri Nov 4 16:36:47 2022 +0000 bpf: stop setting precise in current state bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10eed821e80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=12eed821e80000 console output: https://syzkaller.appspot.com/x/log.txt?x=14eed821e80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+46700eea57ecc7f84776@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: f63181b6ae79 ("bpf: stop setting precise in current state") ================================================================================ UBSAN: shift-out-of-bounds in kernel/bpf/verifier.c:13571:63 shift exponent 1073741824 is too large for 32-bit type 'int' CPU: 0 PID: 5069 Comm: syz-executor200 Not tainted 6.7.0-rc5-syzkaller-00167-gb1dfc0f76231 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_shift_out_of_bounds+0x2a6/0x480 lib/ubsan.c:387 scalar32_min_max_arsh kernel/bpf/verifier.c:13571 [inline] adjust_scalar_min_max_vals kernel/bpf/verifier.c:13759 [inline] adjust_reg_min_max_vals.cold+0x162/0x221 kernel/bpf/verifier.c:13860 check_alu_op+0x498/0x3a60 kernel/bpf/verifier.c:14092 do_check kernel/bpf/verifier.c:17517 [inline] do_check_common+0x1b30/0xd690 kernel/bpf/verifier.c:20177 do_check_main kernel/bpf/verifier.c:20240 [inline] bpf_check+0x77d9/0xa5e0 kernel/bpf/verifier.c:20877 bpf_prog_load+0x1531/0x2200 kernel/bpf/syscall.c:2716 __sys_bpf+0xbf7/0x4920 kernel/bpf/syscall.c:5383 __do_sys_bpf kernel/bpf/syscall.c:5487 [inline] __se_sys_bpf kernel/bpf/syscall.c:5485 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5485 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7ff0c7237af9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007fff01650e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff0c7237af9 RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000003a28 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 </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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
