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

Status: upstream: reported C repro on 2024/05/18 12:29
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+412dea214d8baa3f7483@syzkaller.appspotmail.com
First crash: 120d, last: 22h44m
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: invalid opcode in dbFindLeaf (log)
Repro: C syz .config
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [jfs?] UBSAN: array-index-out-of-bounds in dbAdjTree (2) 0 (2) 2024/08/16 17:21
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream UBSAN: array-index-out-of-bounds in dbAdjTree jfs C error error 41 239d 716d 25/27 fixed on 2024/01/30 15:47
linux-4.14 KASAN: slab-out-of-bounds Read in dbAdjTree C 3 563d 710d 0/1 upstream: reported C repro on 2022/10/03 00:17
linux-4.19 KASAN: use-after-free Read in dbAdjTree C error 5 564d 681d 0/1 upstream: reported C repro on 2022/10/31 14:16

Sample crash report:
loop0: detected capacity change from 0 to 32768
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2902:18
index -3 is out of range for type 's8[1365]' (aka 'signed char[1365]')
CPU: 0 UID: 0 PID: 5228 Comm: syz-executor656 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429
 dbAdjTree+0x377/0x520 fs/jfs/jfs_dmap.c:2902
 dbAllocBits+0x4ea/0x990 fs/jfs/jfs_dmap.c:2193
 dbAllocDmap+0x6d/0x150 fs/jfs/jfs_dmap.c:2034
 dbAlloc+0x509/0xca0 fs/jfs/jfs_dmap.c:816
 extBalloc fs/jfs/jfs_extent.c:326 [inline]
 extAlloc+0x4f8/0x1010 fs/jfs/jfs_extent.c:122
 jfs_get_block+0x41b/0xe60 fs/jfs/inode.c:248
 __block_write_begin_int+0x50c/0x1a70 fs/buffer.c:2125
 __block_write_begin fs/buffer.c:2174 [inline]
 block_write_begin+0x9b/0x1e0 fs/buffer.c:2235
 jfs_write_begin+0x31/0x70 fs/jfs/inode.c:299
 generic_perform_write+0x399/0x840 mm/filemap.c:4019
 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4147
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa72/0xc90 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74e7292e59
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007ffcb67c8aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f74e72dc095 RCX: 00007f74e7292e59
RDX: 00000000fffffdef RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007f74e730d5f0 R08: 000055558f8664c0 R09: 000055558f8664c0
R10: 0000000000006289 R11: 0000000000000246 R12: 00007ffcb67c8ad0
R13: 00007ffcb67c8cf8 R14: 431bde82d7b634db R15: 00007f74e72dc03b
 </TASK>
---[ end trace ]---

Crashes (31):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/16 18:29 upstream d7a5aa4b3c00 e1c76ab2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/16 17:21 upstream d7a5aa4b3c00 e1c76ab2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/27 00:17 upstream 5be63fc19fca 9aee4e0b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/16 16:09 upstream d7a5aa4b3c00 e1c76ab2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/16 16:08 upstream d7a5aa4b3c00 e1c76ab2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:45 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:45 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:45 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:43 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:42 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:40 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:39 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:27 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:27 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:26 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:25 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/03 07:23 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/05/17 11:41 upstream ea5f6ad9ad96 c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/05/16 10:54 upstream 3c999d1ae3c7 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/05/14 12:21 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/05/14 12:21 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/11 07:43 upstream 8d8d276ba2fb 8ab55d0e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/11 06:53 upstream 8d8d276ba2fb 8ab55d0e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/10 21:35 upstream 8d8d276ba2fb e1ac59f4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/08 15:12 upstream d1f2d51b711a 9750182a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/06 18:54 upstream b831f83e40a2 ce70880a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/06 00:20 upstream ad618736883b 464ac2ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/05 01:40 upstream c7fb1692dc01 dfbe2ed4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/09/04 07:26 upstream 88fac17500f4 9d47f20a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/31 04:59 upstream fb24560f31f9 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
2024/08/31 02:57 upstream fb24560f31f9 1eda0d14 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dbAdjTree
* Struck through repros no longer work on HEAD.