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UBSAN: array-index-out-of-bounds in jfs_readdir

Status: upstream: reported C repro on 2024/04/01 00:16
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+d9da34bfc308d1389b46@syzkaller.appspotmail.com
First crash: 31d, last: 6d05h
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2024/04/30 upstream (ToT) 98369dccd2f8 C [report] UBSAN: array-index-out-of-bounds in jfs_readdir
▶ ▼ Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: slab-out-of-bounds Read in jfs_readdir jfs C error done 17 115d 476d 26/26 fixed on 2024/03/20 11:33
linux-5.15 UBSAN: array-index-out-of-bounds in jfs_readdir origin:upstream C 15 15d 31d 0/3 upstream: reported C repro on 2024/04/01 00:20
upstream UBSAN: array-index-out-of-bounds in jfs_readdir jfs C inconclusive 28 4d08h 31d 0/26 upstream: reported C repro on 2024/04/01 14:07
linux-4.14 KASAN: slab-out-of-bounds Read in jfs_readdir jfs 1 476d 476d 0/1 upstream: reported on 2023/01/12 07:34
linux-4.19 KASAN: slab-out-of-bounds Read in jfs_readdir jfs 2 476d 476d 0/1 upstream: reported on 2023/01/12 07:27

Sample crash report:
loop0: detected capacity change from 0 to 32768
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2892:30
index -1 is out of range for type 'struct dtslot[128]'
CPU: 0 PID: 3540 Comm: syz-executor400 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_out_of_bounds+0x118/0x140 lib/ubsan.c:282
 jfs_readdir+0x1c81/0x4620 fs/jfs/jfs_dtree.c:2892
 iterate_dir+0x224/0x560
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe22e711639
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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:00007ffedfa23a28 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007ffedfa23bf8 RCX: 00007fe22e711639
RDX: 000000000000102a RSI: 0000000020002280 RDI: 0000000000000004
RBP: 00007fe22e78a610 R08: 0000000000000000 R09: 00007ffedfa23bf8
R10: 00000000000060cc R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffedfa23be8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
================================================================================

Crashes (31):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/01 00:46 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:31 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/07 06:10 linux-6.1.y 347385861c50 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:24 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/26 10:21 linux-6.1.y 6741e066ec76 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/26 10:21 linux-6.1.y 6741e066ec76 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/26 10:21 linux-6.1.y 6741e066ec76 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/26 10:21 linux-6.1.y 6741e066ec76 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/14 11:13 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/14 11:13 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/14 11:13 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/14 11:13 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/13 10:27 linux-6.1.y bf1e3b1cb1e0 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/10 06:44 linux-6.1.y 347385861c50 171ec371 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/02 14:59 linux-6.1.y e5cd595e23c1 eb2966c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/02 14:59 linux-6.1.y e5cd595e23c1 eb2966c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/02 05:12 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/02 05:12 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:54 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:54 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:52 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:52 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:49 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:49 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:49 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:49 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:36 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:35 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:16 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:15 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
2024/04/01 00:15 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in jfs_readdir
* Struck through repros no longer work on HEAD.