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: 106d, last: 7d08h
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 2163d 2163d 5/26 fixed on 2018/05/08 18:30
android-49 WARNING in format_decode 1 1957d 1784d 0/3 auto-closed as invalid on 2019/04/28 09:31
upstream WARNING in format_decode (3) bpf trace C done 279 7d08h 102d 0/26 upstream: reported C repro on 2023/11/21 22:43
upstream WARNING in format_decode (2) trace C 16 1932d 2014d 11/26 fixed on 2018/12/07 08:24
linux-6.1 WARNING in format_decode origin:upstream C 54 7d08h 106d 0/3 upstream: reported C repro on 2023/11/17 22:49

Sample crash report:
------------[ cut here ]------------
Please remove unsupported %� in format string
WARNING: CPU: 0 PID: 3506 at lib/vsprintf.c:2667 format_decode+0x12d2/0x1f10 lib/vsprintf.c:2667
Modules linked in:
CPU: 0 PID: 3506 Comm: syz-executor393 Not tainted 5.15.149-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:format_decode+0x12d2/0x1f10 lib/vsprintf.c:2667
Code: a4 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 20 b4 db 8a e8 8e 80 1f 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:ffffc900020676e0 EFLAGS: 00010046
RAX: 8af68d4c74891100 RBX: 00000000ffffffdb RCX: ffff888021b03b80
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: ffffc900020677d0 R08: ffffffff8166625c R09: ffffed1017344f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff0a00ffffff00
R13: ffff0000ffffff00 R14: ffffc900020679ec R15: 1ffff9200040cf3d
FS:  00005555573c5380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000001a94d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0x130/0x10c0 lib/vsprintf.c:3238
 ____bpf_trace_printk kernel/trace/bpf_trace.c:383 [inline]
 bpf_trace_printk+0x191/0x3d0 kernel/trace/bpf_trace.c:368
 bpf_prog_12183cdb1cd51dab+0x2e/0x8e4
 bpf_dispatcher_nop_func include/linux/bpf.h:780 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 bpf_test_run+0x3f4/0x8a0 net/bpf/test_run.c:119
 bpf_prog_test_run_skb+0xb41/0x1420 net/bpf/test_run.c:663
 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3346
 __sys_bpf+0x3ac/0x670 kernel/bpf/syscall.c:4647
 __do_sys_bpf kernel/bpf/syscall.c:4733 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4731 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4731
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd9dfa644e9
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:00007ffcf58e3cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ffcf58e3e88 RCX: 00007fd9dfa644e9
RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007fd9dfad7610 R08: 0000000000000000 R09: 00007ffcf58e3e88
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcf58e3e78 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (50):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2024/02/07 13:34 linux-5.15.y 6139f2a02fe0 6404acf9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/01/26 09:01 linux-5.15.y 6139f2a02fe0 cc4a4020 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/17 08:32 linux-5.15.y ddcaf4999061 2a7bcc7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/01/12 07:21 linux-5.15.y 26c690eff0a5 dda5a988 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/12 03:50 linux-5.15.y 26c690eff0a5 dda5a988 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/01/10 19:21 linux-5.15.y 26c690eff0a5 04815ef1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/10 19:21 linux-5.15.y 26c690eff0a5 04815ef1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/04 20:29 linux-5.15.y d93fa2c78854 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/01/04 20:21 linux-5.15.y d93fa2c78854 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2024/01/04 19:39 linux-5.15.y d93fa2c78854 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2024/01/04 19:36 linux-5.15.y d93fa2c78854 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/16 05:05 linux-5.15.y d0fc081c6241 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/13 14:13 linux-5.15.y 8a1d809b0545 ebcad15c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/13 07:02 linux-5.15.y 8a1d809b0545 ebcad15c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in format_decode
2023/12/12 17:03 linux-5.15.y 8a1d809b0545 ebcad15c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/05 23:07 linux-5.15.y 9b91d36ba301 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/12/01 06:33 linux-5.15.y a78d278e01b1 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/24 03:28 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/22 07:02 linux-5.15.y 2a910f4af54d cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/20 00:12 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/20 00:11 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 03:19 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf WARNING in format_decode
2023/11/18 01:56 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf 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.