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

Status: upstream: reported C repro on 2022/09/27 11:45
Labels: jfs (incorrect?)
Reported-by: syzbot+79d792676d8ac050949f@syzkaller.appspotmail.com
First crash: 245d, last: 46d

Cause bisection: failed (error log, bisect log)

Fix bisection: the fix commit could be any of (bisect log):
  1ea66d71b176 jfs: remove unused declarations for jfs
  dee874452409 jfs: remove redundant assignments to ipaimap and ipaimap2
  b0a35efa0ebc fs/jfs/jfs_xattr.h: Fix spelling typo in comment
  ebe060369f8d jfs: Fix fortify moan in symlink
  25e70c6162f2 fs: jfs: fix shift-out-of-bounds in dbDiscardAG
  4ef3405e82d2 MAINTAINERS: git://github -> https://github.com for kleikamp
  73c6da327ff1 fs/jfs: replace ternary operator with min_t()
  d0e482c45c50 jfs: Fix a typo in function jfs_umount
  898f70669568 fs: jfs: fix shift-out-of-bounds in dbAllocAG
  a60dca73a1a8 jfs: makes diUnmount/diMount in jfs_mount_rw atomic
  56c003e4db4a Merge tag 'jfs-6.2' of https://github.com/kleikamp/linux-shaggy
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] UBSAN: array-index-out-of-bounds in diAlloc 0 (1) 2022/09/27 11:45
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in diAlloc C error 3 194d 239d 0/1 upstream: reported C repro on 2022/10/02 23:41
linux-4.14 KASAN: use-after-free Read in diAlloc C 2 93d 238d 0/1 upstream: reported C repro on 2022/10/03 09:45

Sample crash report:
loop0: detected capacity change from 0 to 32768
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:1359:19
index 65535 is out of range for type 'atomic_t [128]'
CPU: 0 PID: 3607 Comm: syz-executor426 Not tainted 6.0.0-rc7-syzkaller-00250-ga962b54e162c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283
 diAlloc+0x1434/0x1700 fs/jfs/jfs_imap.c:1359
 ialloc+0x8c/0xa80 fs/jfs/jfs_inode.c:56
 jfs_create+0x13a/0xb10 fs/jfs/namei.c:92
 lookup_open fs/namei.c:3413 [inline]
 open_last_lookups fs/namei.c:3481 [inline]
 path_openat+0x12d0/0x2df0 fs/namei.c:3688
 do_filp_open+0x264/0x4f0 fs/namei.c:3718
 do_sys_openat2+0x124/0x4e0 fs/open.c:1313
 do_sys_open fs/open.c:1329 [inline]
 __do_sys_open fs/open.c:1337 [inline]
 __se_sys_open fs/open.c:1333 [inline]
 __x64_sys_open+0x221/0x270 fs/open.c:1333
 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: 0033:0x7f05492ebe99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc6a3b7468 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f05492ebe99
RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000200
RBP: 00007f05492ab660 R08: 00005555557372c0 R09: 0000000000000000
R10: 00007ffc6a3b7330 R11: 0000000000000246 R12: 0000000200000004
R13: 0000000000000000 R14: 00080000000000f8 R15: 0000000000000000
 </TASK>
================================================================================

Crashes (35):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2022/10/03 14:00 upstream a962b54e162c feb56351 .config strace log report syz C [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/09/27 21:09 upstream a1375562c0a8 87840e00 .config strace log report syz C [disk image] [vmlinux] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in diAlloc
2022/09/26 20:59 upstream f76349cf4145 d59ba983 .config strace log report syz C ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/09 09:26 upstream a6afa4199d3d aea5da89 .config strace log report syz C [disk image] [vmlinux] [mounted in repro] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in diAlloc
2023/02/09 18:01 upstream 0983f6bf2bfc 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2023/01/12 17:43 upstream e8f60cd7db24 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/12/23 14:23 upstream 8395ae05cb5a 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/19 06:25 upstream ab290eaddc4c 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/19 05:12 upstream ab290eaddc4c 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/18 12:17 upstream 84368d882b96 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/18 00:01 upstream 81ac25651a62 4ba8ab94 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/16 07:38 upstream 81e7cfa3a9eb 3a127a31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/16 04:12 upstream 81e7cfa3a9eb 3a127a31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/15 04:25 upstream e01d50cbd6ee 97de9cfc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/13 08:45 upstream fef7fd48922d f42ee5d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/12 22:06 upstream 8f2975c2bb4c f42ee5d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/12 13:03 upstream 8f2975c2bb4c f42ee5d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/12 05:27 upstream eb037f16f7e8 f42ee5d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/10 11:45 upstream f67dd6ce0723 b2488a87 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/10 04:58 upstream f67dd6ce0723 b2488a87 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/08 07:38 upstream 59f2f4b8a757 6feb842b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/11/01 18:05 upstream b229b6ca5abb a1d8560a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/27 11:48 upstream 4dc12f37a8e9 86777b7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/27 01:27 upstream 4dc12f37a8e9 86777b7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/24 20:01 upstream 247f34f7b803 faae2fda .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/22 00:18 upstream 6d36c728bc2e 63e790dd .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/21 12:34 upstream 6d36c728bc2e 63e790dd .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/18 16:46 upstream 493ffd6605b2 b31320fc .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/17 09:49 upstream 493ffd6605b2 67cb024c .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/16 02:35 upstream 493ffd6605b2 67cb024c .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/12 19:42 upstream 493ffd6605b2 16a9c9e0 .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/09 13:27 upstream a6afa4199d3d aea5da89 .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/06 02:39 upstream 2bca25eaeba6 2c6543ad .config console log report info [disk image] [vmlinux] ci2-upstream-fs UBSAN: array-index-out-of-bounds in diAlloc
2022/10/20 23:27 linux-next acee3e83b493 a0fd4dab .config console log report info [disk image] [vmlinux] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in diAlloc
2023/04/13 23:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7920df21c1b7 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: array-index-out-of-bounds in diAlloc
* Struck through repros no longer work on HEAD.