syzbot


WARNING in format_decode

Status: upstream: reported C repro on 2023/11/17 23:37
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+62370a20d9e4691f7b49@syzkaller.appspotmail.com
First crash: 379d, last: 12d
Bug presence (1)
Date Name Commit Repro Result
2023/11/18 upstream (ToT) 791c8ab095f7 C [report] WARNING in format_decode
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in format_decode reiserfs C 1 2437d 2436d 5/28 fixed on 2018/05/08 18:30
android-49 WARNING in format_decode 1 2231d 2058d 0/3 auto-closed as invalid on 2019/04/28 09:31
upstream WARNING in format_decode (3) bpf trace C done 1229 8d09h 375d 0/28 upstream: reported C repro on 2023/11/21 22:43
upstream WARNING in format_decode (2) trace C 16 2206d 2288d 11/28 fixed on 2018/12/07 08:24
linux-6.1 WARNING in format_decode origin:upstream C 165 1d07h 379d 0/3 upstream: reported C repro on 2023/11/17 22:49
Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/11/19 13:42 8m retest repro linux-5.15.y report log
2024/11/19 13:42 15m retest repro linux-5.15.y report log
2024/11/19 13:42 9m retest repro linux-5.15.y report log
2024/11/19 13:42 10m retest repro linux-5.15.y report log
2024/11/19 13:42 9m retest repro linux-5.15.y report log
2024/11/05 09:48 1h14m retest repro linux-5.15.y report log
2024/11/05 09:48 1h08m retest repro linux-5.15.y report log
2024/11/05 09:48 9m retest repro linux-5.15.y report log
2024/11/05 09:48 12m retest repro linux-5.15.y report log
2024/11/05 09:48 54m retest repro linux-5.15.y report log

Sample crash report:
------------[ cut here ]------------
Please remove unsupported %� in format string
WARNING: CPU: 0 PID: 3565 at lib/vsprintf.c:2667 format_decode+0x12d2/0x1f10 lib/vsprintf.c:2667
Modules linked in:
CPU: 0 PID: 3565 Comm: syz-executor409 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:format_decode+0x12d2/0x1f10 lib/vsprintf.c:2667
Code: a7 09 01 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 30 0c 00 00 41 0f be 36 48 c7 c7 a0 27 dc 8a e8 4e 91 1d fd <0f> 0b e9 01 fa ff ff 48 8b 4c 24 18 80 e1 07 38 c1 0f 8c e3 ed ff
RSP: 0018:ffffc900011df6c0 EFLAGS: 00010246
RAX: c4e76076d9d52f00 RBX: 00000000ffffffdb RCX: ffff8880199e5940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900011df7b0 R08: ffffffff816689dc R09: fffff5200023be19
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff0a00ffffff00
R13: ffff0000ffffff00 R14: ffffc900011df9ec R15: 1ffff9200023bf3d
FS:  000055556ab11380(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 0000000073f09000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0x130/0x1160 lib/vsprintf.c:3238
 ____bpf_trace_printk kernel/trace/bpf_trace.c:381 [inline]
 bpf_trace_printk+0x1bc/0x410 kernel/trace/bpf_trace.c:366
 bpf_prog_12183cdb1cd51dab+0x2e/0xd04
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 bpf_test_run+0x3f4/0x8a0 net/bpf/test_run.c:119
 bpf_prog_test_run_skb+0xb41/0x1420 net/bpf/test_run.c:669
 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3368
 __sys_bpf+0x3ac/0x670 kernel/bpf/syscall.c:4669
 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7cf75bc4e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 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:00007ffd106ea268 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ffd106ea438 RCX: 00007f7cf75bc4e9
RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007f7cf762f610 R08: 0000000000000000 R09: 00007ffd106ea438
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd106ea428 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (163):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/07 05:24 linux-5.15.y 14e468424d3e 9750182a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/09/05 21:28 linux-5.15.y 14e468424d3e 464ac2ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/08/18 22:13 linux-5.15.y 7e89efd3ae1c dbc93b08 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/08/18 20:38 linux-5.15.y 7e89efd3ae1c dbc93b08 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/09 19:00 linux-5.15.y 284087d4f7d5 05079661 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/02/24 17:32 linux-5.15.y 458ce51d0356 8d446f15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/02/24 16:30 linux-5.15.y 458ce51d0356 8d446f15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/02/24 03:34 linux-5.15.y 458ce51d0356 8d446f15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/02/18 00:08 linux-5.15.y 6139f2a02fe0 578f7538 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/02/15 11:50 linux-5.15.y 6139f2a02fe0 d9b1cdd5 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/02/15 09:25 linux-5.15.y 6139f2a02fe0 d9b1cdd5 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/02/09 01:20 linux-5.15.y 6139f2a02fe0 7f07e9b0 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/26 16:38 linux-5.15.y 6139f2a02fe0 cc4a4020 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/26 14:36 linux-5.15.y 6139f2a02fe0 cc4a4020 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/01/16 15:38 linux-5.15.y ddcaf4999061 2a7bcc7f .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/12 06:55 linux-5.15.y 26c690eff0a5 dda5a988 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/04 21:36 linux-5.15.y d93fa2c78854 28c42cff .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/04 20:50 linux-5.15.y d93fa2c78854 28c42cff .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/30 22:42 linux-5.15.y d93fa2c78854 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/30 21:58 linux-5.15.y d93fa2c78854 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2023/12/06 06:00 linux-5.15.y 9b91d36ba301 858d62d1 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 05:37 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 05:07 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 04:36 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 04:11 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 03:45 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 03:12 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 02:42 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 02:20 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 01:50 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 01:05 linux-5.15.y 80529b4968a8 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/10/21 02:11 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/10/20 09:38 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/10/20 09:37 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/10/15 02:03 linux-5.15.y 3a5928702e71 b01b6661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/10/14 18:58 linux-5.15.y 3a5928702e71 084d8178 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/10/11 16:20 linux-5.15.y 3a5928702e71 cd942402 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/29 19:35 linux-5.15.y 3a5928702e71 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/09/28 23:47 linux-5.15.y 3a5928702e71 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/28 22:20 linux-5.15.y 3a5928702e71 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/28 14:57 linux-5.15.y 3a5928702e71 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/09/28 08:53 linux-5.15.y 3a5928702e71 440b26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/25 01:14 linux-5.15.y 3a5928702e71 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/14 06:08 linux-5.15.y 3a5928702e71 b58f933c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/12 22:17 linux-5.15.y 3a5928702e71 60e1a995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/09/12 05:39 linux-5.15.y 14e468424d3e d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/09/10 06:55 linux-5.15.y 14e468424d3e 784df80e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/08/18 19:05 linux-5.15.y 7e89efd3ae1c dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/08/13 10:14 linux-5.15.y 7e89efd3ae1c 7b0f4b46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/08/12 19:11 linux-5.15.y 7e89efd3ae1c 842184b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/08/12 18:18 linux-5.15.y 7e89efd3ae1c 842184b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/07/21 01:58 linux-5.15.y 7c6d66f0266f b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/07/07 20:01 linux-5.15.y f45bea23c39c 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/07/03 10:27 linux-5.15.y 4878aadf2d15 1ecfa2d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/07/01 07:29 linux-5.15.y 4878aadf2d15 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/07/01 04:48 linux-5.15.y 4878aadf2d15 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/18 21:30 linux-5.15.y 4878aadf2d15 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/18 18:41 linux-5.15.y 4878aadf2d15 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/06/10 22:56 linux-5.15.y c61bd26ae81a 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/08 16:07 linux-5.15.y c61bd26ae81a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/06 12:22 linux-5.15.y c61bd26ae81a 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/06 12:05 linux-5.15.y c61bd26ae81a 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/05 20:22 linux-5.15.y c61bd26ae81a 5aa1a7c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/06/04 07:24 linux-5.15.y c61bd26ae81a a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/31 02:13 linux-5.15.y c61bd26ae81a 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/25 01:04 linux-5.15.y 83655231580b a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/23 17:40 linux-5.15.y 83655231580b 4c2072ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/17 18:58 linux-5.15.y 83655231580b a12e99e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/11 12:42 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/11 05:27 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/11 04:07 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/03 17:45 linux-5.15.y 284087d4f7d5 dd26401e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/03 06:25 linux-5.15.y 284087d4f7d5 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/03 04:00 linux-5.15.y 284087d4f7d5 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/05/02 02:34 linux-5.15.y b925f60c6ee7 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2023/11/17 23:36 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
* Struck through repros no longer work on HEAD.