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UBSAN: array-index-out-of-bounds in xtSearch (2)

Status: upstream: reported C repro on 2023/11/05 20:01
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+7cb897779f3c479d0615@syzkaller.appspotmail.com
First crash: 178d, last: 5d02h
Fix commit to backport (bisect log) :
tree: upstream
commit a779ed754e52d582b8c0e17959df063108bd0656
Author: Dave Kleikamp <dave.kleikamp@oracle.com>
Date: Thu Oct 5 14:16:14 2023 +0000

  jfs: define xtree root and page independently

  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/11/06 linux-6.1.y (ToT) 4a61839152cc C [report] UBSAN: array-index-out-of-bounds in xtSearch
2023/11/06 upstream (ToT) d2f51b3516da C Didn't crash
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 UBSAN: array-index-out-of-bounds in xtSearch origin:upstream C done 3 298d 375d 3/3 fixed on 2023/09/23 10:26
upstream UBSAN: array-index-out-of-bounds in xtSearch jfs C unreliable done 122 158d 576d 25/26 fixed on 2024/01/08 11:23
linux-5.15 UBSAN: array-index-out-of-bounds in xtSearch 17 370d 412d 0/3 auto-obsoleted due to no activity on 2023/08/22 15:17
linux-5.15 UBSAN: array-index-out-of-bounds in xtSearch (2) origin:lts-only C done 62 11h45m 178d 0/3 upstream: reported C repro on 2023/11/05 19:59
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/12/18 12:34 4h10m fix candidate upstream job log (1)

Sample crash report:
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:360:4
index 19 is out of range for type 'xad_t[18]' (aka 'struct xad[18]')
CPU: 0 PID: 3543 Comm: syz-executor424 Not tainted 6.1.61-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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
 xtSearch+0x6dc/0x1ca0 fs/jfs/jfs_xtree.c:360
 xtLookup+0x2c0/0x8e0 fs/jfs/jfs_xtree.c:152
 extHint+0x291/0x710 fs/jfs/jfs_extent.c:215
 jfs_get_block+0x3a7/0xe50 fs/jfs/inode.c:246
 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x98/0x1f0 fs/buffer.c:2102
 jfs_write_begin+0x2d/0x60 fs/jfs/inode.c:304
 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3754
 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3882
 generic_file_write_iter+0xab/0x310 mm/filemap.c:3914
 do_iter_write+0x6e6/0xc50 fs/read_write.c:861
 iter_file_splice_write+0x806/0xfa0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0xe3/0x1c0 fs/splice.c:931
 splice_direct_to_actor+0x4c0/0xbd0 fs/splice.c:886
 do_splice_direct+0x27f/0x3c0 fs/splice.c:974
 do_sendfile+0x61c/0xff0 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64+0x178/0x1e0 fs/read_write.c:1309
 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+0x63/0xcd
RIP: 0033:0x7f5ce5609549
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5ce55a5218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5ce5696658 RCX: 00007f5ce5609549
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007f5ce5696650 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 00007f5ce5663608
R13: 00007f5ce565d0c0 R14: 00007f5ce565d890 R15: 0030656c69662f2e
 </TASK>
================================================================================

Crashes (40):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/06 00:40 linux-6.1.y 4a61839152cc 500bfdc4 .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 xtSearch
2024/04/27 10:27 linux-6.1.y 6741e066ec76 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/04/24 05:10 linux-6.1.y 6741e066ec76 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/04/21 12:46 linux-6.1.y 6741e066ec76 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/03/07 10:18 linux-6.1.y 61adba85cc40 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/03/07 05:07 linux-6.1.y 61adba85cc40 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/03/07 04:15 linux-6.1.y 61adba85cc40 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/03/03 14:49 linux-6.1.y a3eb3a74aa8c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/03/02 20:49 linux-6.1.y a3eb3a74aa8c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/02/26 07:02 linux-6.1.y 81e1dc2f7001 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/02/24 06:37 linux-6.1.y 81e1dc2f7001 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/02/22 05:45 linux-6.1.y 8b4118fabd6e 345111b5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/02/19 03:35 linux-6.1.y 8b4118fabd6e 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/02/01 09:18 linux-6.1.y e5c3b988b827 373b66cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/02/01 09:10 linux-6.1.y e5c3b988b827 373b66cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/01/27 04:29 linux-6.1.y 883d1a956208 cc4a4020 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/27 06:51 linux-6.1.y 4aa6747d9352 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/21 01:17 linux-6.1.y 4aa6747d9352 de21eb89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/20 10:44 linux-6.1.y ba6f5fb46511 3ad490ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/19 02:46 linux-6.1.y ba6f5fb46511 924661f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/19 02:35 linux-6.1.y ba6f5fb46511 924661f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/16 05:40 linux-6.1.y ba6f5fb46511 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/11 18:03 linux-6.1.y e7cddbb41b63 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/10 12:33 linux-6.1.y 6c6a6c7e211c 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/08 16:13 linux-6.1.y 6c6a6c7e211c 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/06 03:41 linux-6.1.y c6114c845984 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/06 03:07 linux-6.1.y c6114c845984 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/06 02:56 linux-6.1.y c6114c845984 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/12/03 06:44 linux-6.1.y 6ac30d748bb0 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/22 12:56 linux-6.1.y 69e434a1cb21 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/20 06:23 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/20 05:13 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/18 11:35 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/18 11:18 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/18 11:17 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/18 11:03 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/17 10:05 linux-6.1.y fb2635ac69ab cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2023/11/05 20:00 linux-6.1.y 4a61839152cc 500bfdc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan UBSAN: array-index-out-of-bounds in xtSearch
2024/01/16 01:30 linux-6.1.y fec3b1451d5f 2a7bcc7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in xtSearch
2023/11/25 16:51 linux-6.1.y 69e434a1cb21 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 UBSAN: array-index-out-of-bounds in xtSearch
* Struck through repros no longer work on HEAD.