syzbot


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: 533d, last: now
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: 14 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:-1
Modules linked in:
CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 3b b1 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 24 b1 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000d37850 EFLAGS: 00010246
RAX: ffffffff81aa911c RBX: 0000000000000000 RCX: ffff88813ff21dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aa902d R09: ffffed1027fe43b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000008f0000
R13: 0000000000000008 R14: 00000000008f0000 R15: ffffc90000d378c8
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557c2d5ca8 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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+0xe4/0x180 kernel/trace/bpf_trace.c:277
 </TASK>
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 panic+0x318/0x860 kernel/panic.c:309
 __warn+0x2b2/0x300 kernel/panic.c:-1
 report_bug+0x1b7/0x2e0 lib/bug.c:199
 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 3b b1 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 24 b1 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000d37850 EFLAGS: 00010246
RAX: ffffffff81aa911c RBX: 0000000000000000 RCX: ffff88813ff21dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aa902d R09: ffffed1027fe43b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000008f0000
R13: 0000000000000008 R14: 00000000008f0000 R15: ffffc90000d378c8
 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+0xe4/0x180 kernel/trace/bpf_trace.c:277
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (78956):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2025/03/05 01:50 linux-5.15.y c16c81c81336 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/03 11:36 linux-5.15.y c16c81c81336 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/02 21:31 linux-5.15.y c16c81c81336 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/03/01 21:09 linux-5.15.y c16c81c81336 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/28 09:28 linux-5.15.y c16c81c81336 6a8fcbc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/02/23 05:32 linux-5.15.y c16c81c81336 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/18 02:13 linux-5.15.y c16c81c81336 429ea007 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/17 19:11 linux-5.15.y c16c81c81336 4121cf9d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/17 15:11 linux-5.15.y c16c81c81336 4121cf9d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/15 11:09 linux-5.15.y c16c81c81336 40a34ec9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/15 03:54 linux-5.15.y c16c81c81336 1022af74 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/14 21:23 linux-5.15.y c16c81c81336 1022af74 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/13 06:19 linux-5.15.y c16c81c81336 b27c2402 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/12 09:05 linux-5.15.y c16c81c81336 f2baddf5 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/11 09:12 linux-5.15.y c16c81c81336 43f51a00 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/11 07:30 linux-5.15.y c16c81c81336 43f51a00 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/11 06:49 linux-5.15.y c16c81c81336 43f51a00 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/10 06:51 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/09 13:42 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/08 21:17 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/08 10:31 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/07 12:55 linux-5.15.y c16c81c81336 53657d1b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/02/05 07:57 linux-5.15.y c16c81c81336 5896748e .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
2025/03/06 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
2025/04/19 11:42 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/19 10:37 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/19 09:48 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/19 09:21 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/19 08:31 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/19 07:42 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/19 07:40 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/19 06:37 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/19 05:39 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/19 04:07 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/19 00:59 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 22:55 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 22:21 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 21:59 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 19:55 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/18 19:14 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 08:59 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 07:55 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 07:37 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 07:24 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 07:05 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 06:03 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 06:00 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 04:56 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 04:13 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/18 00:55 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/18 00:47 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 23:46 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 21:49 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 20:42 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 20:38 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 19:16 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 18:09 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 17:34 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 16:55 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 15:36 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 14:16 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in bpf_probe_read_compat
2025/04/17 12:49 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 12:40 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 11:40 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 11:38 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 09:27 linux-5.15.y f7347f400572 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in bpf_probe_read_compat
2025/04/17 07:56 linux-5.15.y f7347f400572 a95239b1 .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.