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* [syzbot] [hfs?] KMSAN: uninit-value in hfs_free_fork
@ 2024-05-06  7:01 syzbot
  2024-10-22 21:25 ` [syzbot] [syzbot] [hfs?] KMSAN: uninit-value in hfs_free_fork; test if repro still valid syzbot
                   ` (3 more replies)
  0 siblings, 4 replies; 11+ messages in thread
From: syzbot @ 2024-05-06  7:01 UTC (permalink / raw)
  To: linux-fsdevel, linux-kernel, syzkaller-bugs

Hello,

syzbot found the following issue on:

HEAD commit:    b9158815de52 Merge tag 'char-misc-6.9-rc7' of git://git.ke..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=15154bff180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=bbf567496022057b
dashboard link: https://syzkaller.appspot.com/bug?extid=2e6fb1f89ce5e13cd02d
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1262fb38980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1530bdc4980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7886d49e8de8/disk-b9158815.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7909f40ff65c/vmlinux-b9158815.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7641fb86043d/bzImage-b9158815.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/aeab32d02708/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2e6fb1f89ce5e13cd02d@syzkaller.appspotmail.com

=====================================================
BUG: KMSAN: uninit-value in __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
BUG: KMSAN: uninit-value in hfs_free_fork+0x6b4/0xa50 fs/hfs/extent.c:320
 __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
 hfs_free_fork+0x6b4/0xa50 fs/hfs/extent.c:320
 hfs_cat_delete+0x501/0xb90 fs/hfs/catalog.c:247
 hfs_remove+0x16a/0x2f0 fs/hfs/dir.c:262
 vfs_unlink+0x676/0xa30 fs/namei.c:4335
 do_unlinkat+0x823/0xe10 fs/namei.c:4399
 __do_sys_unlink fs/namei.c:4447 [inline]
 __se_sys_unlink fs/namei.c:4445 [inline]
 __x64_sys_unlink+0x78/0xb0 fs/namei.c:4445
 x64_sys_call+0x31c7/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3804 [inline]
 slab_alloc_node mm/slub.c:3845 [inline]
 __do_kmalloc_node mm/slub.c:3965 [inline]
 __kmalloc+0x6e4/0x1000 mm/slub.c:3979
 kmalloc include/linux/slab.h:632 [inline]
 hfs_find_init+0x91/0x250 fs/hfs/bfind.c:21
 hfs_free_fork+0x3bb/0xa50 fs/hfs/extent.c:316
 hfs_cat_delete+0x501/0xb90 fs/hfs/catalog.c:247
 hfs_remove+0x16a/0x2f0 fs/hfs/dir.c:262
 vfs_unlink+0x676/0xa30 fs/namei.c:4335
 do_unlinkat+0x823/0xe10 fs/namei.c:4399
 __do_sys_unlink fs/namei.c:4447 [inline]
 __se_sys_unlink fs/namei.c:4445 [inline]
 __x64_sys_unlink+0x78/0xb0 fs/namei.c:4445
 x64_sys_call+0x31c7/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 PID: 5043 Comm: syz-executor323 Not tainted 6.9.0-rc6-syzkaller-00290-gb9158815de52 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
=====================================================


---
This report is generated by a bot. It may contain errors.
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If the report is already addressed, let syzbot know by replying with:
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#syz undup

^ permalink raw reply	[flat|nested] 11+ messages in thread
[parent not found: <41a67fa0-52c7-4089-8cb1-3d3d622cbcff@gmail.com>]
[parent not found: <18374947-f71e-4f71-b097-f06eb0699bfa@gmail.com>]
[parent not found: <429d2bea-ef68-4130-bb8a-0fb5fd38663c@gmail.com>]
[parent not found: <6f129270-4c3c-454b-831b-4fe2f5597bc7@gmail.com>]
end of thread, other threads:[~2024-11-11 20:49 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-05-06  7:01 [syzbot] [hfs?] KMSAN: uninit-value in hfs_free_fork syzbot
2024-10-22 21:25 ` [syzbot] [syzbot] [hfs?] KMSAN: uninit-value in hfs_free_fork; test if repro still valid syzbot
2024-11-11 19:49 ` [syzbot] KMSAN: uninit-value in hfs_free_fork syzbot
2024-11-11 19:50 ` syzbot
2024-11-11 19:53 ` syzbot
     [not found] <41a67fa0-52c7-4089-8cb1-3d3d622cbcff@gmail.com>
2024-10-22 22:07 ` [syzbot] [hfs?] " syzbot
2024-10-22 22:11   ` Gianfranco Trad
2024-10-22 22:40     ` syzbot
     [not found] <18374947-f71e-4f71-b097-f06eb0699bfa@gmail.com>
2024-11-11 20:21 ` syzbot
     [not found] <429d2bea-ef68-4130-bb8a-0fb5fd38663c@gmail.com>
2024-11-11 20:21 ` syzbot
     [not found] <6f129270-4c3c-454b-831b-4fe2f5597bc7@gmail.com>
2024-11-11 20:49 ` syzbot

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