syzbot


KASAN: slab-out-of-bounds Read in ntfs_listxattr (2)

Status: fixed on 2024/03/25 23:45
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+65e940cfb8f99a97aca7@syzkaller.appspotmail.com
Fix commit: 731ab1f98288 fs/ntfs3: Fix oob in ntfs_listxattr
First crash: 149d, last: 106d
Cause bisection: failed (error log, bisect log)
  
Discussions (6)
Title Replies (including bot) Last reply
[PATCH AUTOSEL 5.15 12/22] fs/ntfs3: Fix oob in ntfs_listxattr 1 (1) 2024/02/13 00:23
[PATCH AUTOSEL 6.1 12/28] fs/ntfs3: Fix oob in ntfs_listxattr 1 (1) 2024/02/13 00:22
[PATCH AUTOSEL 6.6 22/51] fs/ntfs3: Fix oob in ntfs_listxattr 1 (1) 2024/02/13 00:19
[PATCH AUTOSEL 6.7 25/58] fs/ntfs3: Fix oob in ntfs_listxattr 1 (1) 2024/02/13 00:17
[PATCH arm64] ntfs3: fix oob in ntfs_listxattr 1 (1) 2023/12/30 09:00
[syzbot] [ntfs3?] KASAN: slab-out-of-bounds Read in ntfs_listxattr (2) 1 (3) 2023/12/30 08:57
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: slab-out-of-bounds Read in ntfs_listxattr ntfs3 C done 70 152d 532d 25/26 fixed on 2023/12/22 18:34
linux-5.15 KASAN: slab-out-of-bounds Read in ntfs_listxattr C error 152 111d 421d 0/3 auto-obsoleted due to no activity on 2024/04/25 11:40
linux-6.1 KASAN: slab-out-of-bounds Read in ntfs_listxattr C done 52 83d 420d 3/3 fixed on 2024/04/02 12:56
Last patch testing requests (1)
Created Duration User Patch Repo Result
2023/12/30 08:08 26m eadavis@qq.com patch git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git aafe7ad77b91 OK log

Sample crash report:
ntfs3: loop0: Mark volume as dirty due to NTFS errors
ntfs3: loop0: Failed to load $Extend (-22).
ntfs3: loop0: Failed to initialize $Extend.
==================================================================
BUG: KASAN: slab-out-of-bounds in ntfs_list_ea fs/ntfs3/xattr.c:232 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_listxattr+0x354/0x50c fs/ntfs3/xattr.c:733
Read of size 48 at addr ffff0000d76354b0 by task syz-executor360/6097

CPU: 0 PID: 6097 Comm: syz-executor360 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:475
 kasan_report+0xd8/0x138 mm/kasan/report.c:588
 kasan_check_range+0x254/0x294 mm/kasan/generic.c:187
 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105
 ntfs_list_ea fs/ntfs3/xattr.c:232 [inline]
 ntfs_listxattr+0x354/0x50c fs/ntfs3/xattr.c:733
 vfs_listxattr fs/xattr.c:494 [inline]
 listxattr+0x108/0x368 fs/xattr.c:841
 path_listxattr fs/xattr.c:865 [inline]
 __do_sys_listxattr fs/xattr.c:877 [inline]
 __se_sys_listxattr fs/xattr.c:874 [inline]
 __arm64_sys_listxattr+0x13c/0x21c fs/xattr.c:874
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Allocated by task 6097:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x7c mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:198 [inline]
 __do_kmalloc_node mm/slab_common.c:1007 [inline]
 __kmalloc+0xcc/0x1b8 mm/slab_common.c:1020
 kmalloc include/linux/slab.h:604 [inline]
 ntfs_read_ea+0x3c0/0x808 fs/ntfs3/xattr.c:118
 ntfs_list_ea fs/ntfs3/xattr.c:204 [inline]
 ntfs_listxattr+0x14c/0x50c fs/ntfs3/xattr.c:733
 vfs_listxattr fs/xattr.c:494 [inline]
 listxattr+0x108/0x368 fs/xattr.c:841
 path_listxattr fs/xattr.c:865 [inline]
 __do_sys_listxattr fs/xattr.c:877 [inline]
 __se_sys_listxattr fs/xattr.c:874 [inline]
 __arm64_sys_listxattr+0x13c/0x21c fs/xattr.c:874
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

The buggy address belongs to the object at ffff0000d7635480
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 48 bytes inside of
 allocated 60-byte region [ffff0000d7635480, ffff0000d76354bc)

The buggy address belongs to the physical page:
page:000000004ec57951 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x117635
flags: 0x5ffc00000000800(slab|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000800 ffff0000c0001640 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d7635380: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d7635400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff0000d7635480: 00 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc
                                        ^
 ffff0000d7635500: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff0000d7635580: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
==================================================================

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/29 23:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci aafe7ad77b91 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2023/12/25 09:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci aafe7ad77b91 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/18 10:49 upstream 1b1934dbbdcf 915053c7 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root KFENCE: out-of-bounds in ntfs_listxattr
2024/01/22 09:51 upstream 4fbbed787267 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/02 08:06 upstream 610a9b8f49fb fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/02/06 12:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 41bccc98fb79 4e988e80 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/30 07:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 0802e17d9aca 991a98f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/24 03:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 0802e17d9aca 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/22 10:47 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 0802e17d9aca 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/22 09:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 0802e17d9aca 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/12 00:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 0802e17d9aca 00f3cc59 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2024/01/05 13:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 0802e17d9aca 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2023/12/29 22:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci aafe7ad77b91 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2023/12/26 06:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci aafe7ad77b91 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
2023/12/25 09:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci aafe7ad77b91 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in ntfs_listxattr
* Struck through repros no longer work on HEAD.