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WARNING in bpf_probe_read_compat

Status: upstream: reported C repro on 2023/11/02 23:51
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+c8d08ea57cf6eedbc51c@syzkaller.appspotmail.com
First crash: 588d, last: 1h58m
Fix commit to backport (bisect log) :
tree: upstream
commit d319f344561de23e810515d109c7278919bff7b0
Author: Alexei Starovoitov <ast@kernel.org>
Date: Mon Apr 10 17:43:44 2023 +0000

  mm: Fix copy_from_user_nofault().

  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/11/03 linux-5.15.y (ToT) 12952a23a5da C [report] WARNING in bpf_probe_read_compat
2023/11/03 upstream (ToT) bc3012f4e3a9 C Didn't crash
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/11/04 00:14 5h04m fix candidate upstream OK (1) job log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ad e2 d7 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 30 df d7 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc900000074f8 EFLAGS: 00010246
RAX: ffffffff819fe2f0 RBX: 0000000000000000 RCX: ffffffff8bebc3c0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff17d7879
R10: fffffbfff17d7879 R11: 1ffffffff17d7878 R12: ffffffff8bebdb48
R13: 00007ffffffff000 R14: ffffc90000007568 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558b2946c8 CR3: 000000002671f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
 </IRQ>
 <TASK>
 </TASK>

Crashes (87518):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/11 06:41 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/11 01:33 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/09 01:46 linux-5.15.y 1c700860e8bc 4826c28e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/08 23:30 linux-5.15.y 1c700860e8bc 4826c28e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/07 07:22 linux-5.15.y 1c700860e8bc 4826c28e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/06 01:50 linux-5.15.y 1c700860e8bc 6b6b5f21 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/02 00:36 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/30 09:00 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/29 23:23 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/29 11:37 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/05/29 11:01 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/05/29 10:22 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/05/25 08:04 linux-5.15.y 98f47d0e9b8c ed351ea7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/20 01:17 linux-5.15.y a68c15152131 b84f0537 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/18 12:34 linux-5.15.y a68c15152131 f41472b0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/17 03:52 linux-5.15.y 3b8db0e4f263 f41472b0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/05/04 22:49 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/30 06:34 linux-5.15.y f7347f400572 85a5a23f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/29 04:25 linux-5.15.y f7347f400572 aeb6ec69 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/27 10:36 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/26 00:31 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/21 04:23 linux-5.15.y f7347f400572 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/19 04:49 linux-5.15.y f7347f400572 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/18 20:58 linux-5.15.y f7347f400572 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/15 17:23 linux-5.15.y f7347f400572 23b969b7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/15 06:15 linux-5.15.y f7347f400572 0bd6db41 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/14 19:27 linux-5.15.y f7347f400572 0bd6db41 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/14 12:06 linux-5.15.y f7347f400572 0bd6db41 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/12 20:51 linux-5.15.y f7347f400572 0bd6db41 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/01 12:59 linux-5.15.y 0c935c049b5c 36d76a97 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/22 09:37 linux-5.15.y 0c935c049b5c c6512ef7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/03/20 02:26 linux-5.15.y 0c935c049b5c e20d7b13 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/15 18:30 linux-5.15.y 0c935c049b5c e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/09 11:10 linux-5.15.y c16c81c81336 163f510d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/06 18:24 linux-5.15.y c16c81c81336 831e3629 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2023/11/03 00:11 linux-5.15.y 12952a23a5da c4ac074c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/26 10:02 linux-5.15.y f7347f400572 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/06 19:58 linux-5.15.y c16c81c81336 831e3629 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/05 17:07 linux-5.15.y c16c81c81336 60f5d8d9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/05 15:38 linux-5.15.y c16c81c81336 60f5d8d9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/05 14:59 linux-5.15.y c16c81c81336 60f5d8d9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/13 18:28 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 15:34 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 13:57 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/13 12:35 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/13 07:11 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/13 04:42 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 04:31 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/13 03:31 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 02:50 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 02:28 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 02:25 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 01:23 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 00:56 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/13 00:28 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/13 00:23 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 20:23 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 17:02 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 15:52 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 11:53 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 11:23 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 11:10 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 08:58 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 06:02 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 03:10 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 02:27 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 01:44 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 01:42 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 00:42 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 00:12 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/12 00:01 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/11 21:14 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/11 20:38 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/11 17:36 linux-5.15.y 1c700860e8bc 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/11 10:43 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/11 07:49 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/11 02:22 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/11 00:53 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/11 00:52 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/10 23:24 linux-5.15.y 1c700860e8bc 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/10 13:19 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/10 11:30 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/10 10:46 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/10 10:39 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/06/10 09:34 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/10 08:18 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/06/10 05:08 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2023/11/02 23:50 linux-5.15.y 12952a23a5da c4ac074c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
* Struck through repros no longer work on HEAD.