LinuxLists.cc - [syzbot] [f2fs?] KASAN: slab-out-of-bounds Read in f2fs_get_node

2024-04-25 07:59:46

Subject: [syzbot] [f2fs?] KASAN: slab-out-of-bounds Read in f2fs_get_node_info

Hello,

syzbot found the following issue on:

HEAD commit: ed30a4a51bb1 Linux 6.9-rc5
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1116bc30980000
kernel config: https://syzkaller.appspot.com/x/.config?x=5a05c230e142f2bc
dashboard link: https://syzkaller.appspot.com/bug?extid=3694e283cf5c40df6d14
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=1128486b180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1516bc30980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7a2e1a02882c/disk-ed30a4a5.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/329966999344/vmlinux-ed30a4a5.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1befbdf4dcac/bzImage-ed30a4a5.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/42ddf2738cf7/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]

F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
==================================================================
BUG: KASAN: slab-out-of-bounds in f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]
BUG: KASAN: slab-out-of-bounds in current_nat_addr fs/f2fs/node.h:213 [inline]
BUG: KASAN: slab-out-of-bounds in f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600
Read of size 1 at addr ffff88807a58c76c by task syz-executor280/5076

CPU: 1 PID: 5076 Comm: syz-executor280 Not tainted 6.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]
current_nat_addr fs/f2fs/node.h:213 [inline]
f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600
f2fs_xattr_fiemap fs/f2fs/data.c:1848 [inline]
f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1c07/0x2e50 fs/ioctl.c:838
__do_sys_ioctl fs/ioctl.c:902 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f60d34ae739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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:00007ffc9f2f1148 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffc9f2f1318 RCX: 00007f60d34ae739
RDX: 0000000020000040 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007f60d3527610 R08: 0000000000000000 R09: 00007ffc9f2f1318
R10: 000000000000551a R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc9f2f1308 R14: 0000000000000001 R15: 0000000000000001
</TASK>

Allocated by task 5076:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:3966 [inline]
__kmalloc_node_track_caller+0x24e/0x4e0 mm/slub.c:3986
kmemdup+0x2a/0x60 mm/util.c:131
init_node_manager fs/f2fs/node.c:3268 [inline]
f2fs_build_node_manager+0x8cc/0x2870 fs/f2fs/node.c:3329
f2fs_fill_super+0x583c/0x8120 fs/f2fs/super.c:4540
mount_bdev+0x20a/0x2d0 fs/super.c:1658
legacy_get_tree+0xee/0x190 fs/fs_context.c:662
vfs_get_tree+0x90/0x2a0 fs/super.c:1779
do_new_mount+0x2be/0xb40 fs/namespace.c:3352
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88807a58c700
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 44 bytes to the right of
allocated 64-byte region [ffff88807a58c700, ffff88807a58c740)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a58c
flags: 0xfff80000000800(slab|node=0|zone=1|lastcpupid=0xfff)
page_type: 0xffffffff()
raw: 00fff80000000800 ffff888015041640 ffffea0000aa6400 dead000000000004
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY), pid 4536, tgid 106643948 (udevd), ts 4536, free_ts 43042041281
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534
prep_new_page mm/page_alloc.c:1541 [inline]
get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317
__alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page+0x5f/0x160 mm/slub.c:2175
allocate_slab mm/slub.c:2338 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2391
___slab_alloc+0xc73/0x1260 mm/slub.c:3525
__slab_alloc mm/slub.c:3610 [inline]
__slab_alloc_node mm/slub.c:3663 [inline]
slab_alloc_node mm/slub.c:3835 [inline]
__do_kmalloc_node mm/slub.c:3965 [inline]
__kmalloc+0x2e5/0x4a0 mm/slub.c:3979
kmalloc include/linux/slab.h:632 [inline]
kzalloc include/linux/slab.h:749 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x23a/0x880 security/tomoyo/file.c:723
tomoyo_path_mknod+0x176/0x1b0 security/tomoyo/tomoyo.c:252
security_path_mknod+0xf8/0x150 security/security.c:1791
may_o_create fs/namei.c:3319 [inline]
lookup_open fs/namei.c:3460 [inline]
open_last_lookups fs/namei.c:3566 [inline]
path_openat+0xc7c/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
page last free pid 4528 tgid 4528 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1141 [inline]
free_unref_page_prepare+0x97b/0xaa0 mm/page_alloc.c:2347
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487
__slab_free+0x31b/0x3d0 mm/slub.c:4192
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x5e/0xc0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
__do_kmalloc_node mm/slub.c:3965 [inline]
__kmalloc+0x1e2/0x4a0 mm/slub.c:3979
kmalloc include/linux/slab.h:632 [inline]
kzalloc include/linux/slab.h:749 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x23a/0x880 security/tomoyo/file.c:723
tomoyo_path_mknod+0x176/0x1b0 security/tomoyo/tomoyo.c:252
security_path_mknod+0xf8/0x150 security/security.c:1791
may_o_create fs/namei.c:3319 [inline]
lookup_open fs/namei.c:3460 [inline]
open_last_lookups fs/namei.c:3566 [inline]
path_openat+0xc7c/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432

Memory state around the buggy address:
ffff88807a58c600: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
ffff88807a58c680: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
>ffff88807a58c700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
^
ffff88807a58c780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
ffff88807a58c800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
==================================================================

---
This report is generated by a bot. It may contain errors.
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https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup

2024-04-25 13:44:24

by Chao Yu

[permalink] [raw]

Subject: Re: [syzbot] [f2fs?] KASAN: slab-out-of-bounds Read in f2fs_get_node_info

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot

On 2024/4/25 15:59, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: ed30a4a51bb1 Linux 6.9-rc5
> git tree: upstream
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=1116bc30980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=5a05c230e142f2bc
> dashboard link: https://syzkaller.appspot.com/bug?extid=3694e283cf5c40df6d14
> 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=1128486b180000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1516bc30980000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/7a2e1a02882c/disk-ed30a4a5.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/329966999344/vmlinux-ed30a4a5.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/1befbdf4dcac/bzImage-ed30a4a5.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/42ddf2738cf7/mount_0.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: [email protected]
>
> F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
> ==================================================================
> BUG: KASAN: slab-out-of-bounds in f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]
> BUG: KASAN: slab-out-of-bounds in current_nat_addr fs/f2fs/node.h:213 [inline]
> BUG: KASAN: slab-out-of-bounds in f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600
> Read of size 1 at addr ffff88807a58c76c by task syz-executor280/5076
>
> CPU: 1 PID: 5076 Comm: syz-executor280 Not tainted 6.9.0-rc5-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
> Call Trace:
> <TASK>
> __dump_stack lib/dump_stack.c:88 [inline]
> dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
> print_address_description mm/kasan/report.c:377 [inline]
> print_report+0x169/0x550 mm/kasan/report.c:488
> kasan_report+0x143/0x180 mm/kasan/report.c:601
> f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]
> current_nat_addr fs/f2fs/node.h:213 [inline]
> f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600
> f2fs_xattr_fiemap fs/f2fs/data.c:1848 [inline]
> f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925
> ioctl_fiemap fs/ioctl.c:220 [inline]
> do_vfs_ioctl+0x1c07/0x2e50 fs/ioctl.c:838
> __do_sys_ioctl fs/ioctl.c:902 [inline]
> __se_sys_ioctl+0x81/0x170 fs/ioctl.c:890
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f60d34ae739
> Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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:00007ffc9f2f1148 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
> RAX: ffffffffffffffda RBX: 00007ffc9f2f1318 RCX: 00007f60d34ae739
> RDX: 0000000020000040 RSI: 00000000c020660b RDI: 0000000000000004
> RBP: 00007f60d3527610 R08: 0000000000000000 R09: 00007ffc9f2f1318
> R10: 000000000000551a R11: 0000000000000246 R12: 0000000000000001
> R13: 00007ffc9f2f1308 R14: 0000000000000001 R15: 0000000000000001
> </TASK>
>
> Allocated by task 5076:
> kasan_save_stack mm/kasan/common.c:47 [inline]
> kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
> poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
> __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
> kasan_kmalloc include/linux/kasan.h:211 [inline]
> __do_kmalloc_node mm/slub.c:3966 [inline]
> __kmalloc_node_track_caller+0x24e/0x4e0 mm/slub.c:3986
> kmemdup+0x2a/0x60 mm/util.c:131
> init_node_manager fs/f2fs/node.c:3268 [inline]
> f2fs_build_node_manager+0x8cc/0x2870 fs/f2fs/node.c:3329
> f2fs_fill_super+0x583c/0x8120 fs/f2fs/super.c:4540
> mount_bdev+0x20a/0x2d0 fs/super.c:1658
> legacy_get_tree+0xee/0x190 fs/fs_context.c:662
> vfs_get_tree+0x90/0x2a0 fs/super.c:1779
> do_new_mount+0x2be/0xb40 fs/namespace.c:3352
> do_mount fs/namespace.c:3692 [inline]
> __do_sys_mount fs/namespace.c:3898 [inline]
> __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
>
> The buggy address belongs to the object at ffff88807a58c700
> which belongs to the cache kmalloc-64 of size 64
> The buggy address is located 44 bytes to the right of
> allocated 64-byte region [ffff88807a58c700, ffff88807a58c740)
>
> The buggy address belongs to the physical page:
> page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a58c
> flags: 0xfff80000000800(slab|node=0|zone=1|lastcpupid=0xfff)
> page_type: 0xffffffff()
> raw: 00fff80000000800 ffff888015041640 ffffea0000aa6400 dead000000000004
> raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
> page dumped because: kasan: bad access detected
> page_owner tracks the page as allocated
> page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY), pid 4536, tgid 106643948 (udevd), ts 4536, free_ts 43042041281
> set_page_owner include/linux/page_owner.h:32 [inline]
> post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534
> prep_new_page mm/page_alloc.c:1541 [inline]
> get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317
> __alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575
> __alloc_pages_node include/linux/gfp.h:238 [inline]
> alloc_pages_node include/linux/gfp.h:261 [inline]
> alloc_slab_page+0x5f/0x160 mm/slub.c:2175
> allocate_slab mm/slub.c:2338 [inline]
> new_slab+0x84/0x2f0 mm/slub.c:2391
> ___slab_alloc+0xc73/0x1260 mm/slub.c:3525
> __slab_alloc mm/slub.c:3610 [inline]
> __slab_alloc_node mm/slub.c:3663 [inline]
> slab_alloc_node mm/slub.c:3835 [inline]
> __do_kmalloc_node mm/slub.c:3965 [inline]
> __kmalloc+0x2e5/0x4a0 mm/slub.c:3979
> kmalloc include/linux/slab.h:632 [inline]
> kzalloc include/linux/slab.h:749 [inline]
> tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
> tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
> tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
> tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
> tomoyo_path_number_perm+0x23a/0x880 security/tomoyo/file.c:723
> tomoyo_path_mknod+0x176/0x1b0 security/tomoyo/tomoyo.c:252
> security_path_mknod+0xf8/0x150 security/security.c:1791
> may_o_create fs/namei.c:3319 [inline]
> lookup_open fs/namei.c:3460 [inline]
> open_last_lookups fs/namei.c:3566 [inline]
> path_openat+0xc7c/0x3240 fs/namei.c:3796
> do_filp_open+0x235/0x490 fs/namei.c:3826
> do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
> do_sys_open fs/open.c:1421 [inline]
> __do_sys_openat fs/open.c:1437 [inline]
> __se_sys_openat fs/open.c:1432 [inline]
> __x64_sys_openat+0x247/0x2a0 fs/open.c:1432
> page last free pid 4528 tgid 4528 stack trace:
> reset_page_owner include/linux/page_owner.h:25 [inline]
> free_pages_prepare mm/page_alloc.c:1141 [inline]
> free_unref_page_prepare+0x97b/0xaa0 mm/page_alloc.c:2347
> free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487
> __slab_free+0x31b/0x3d0 mm/slub.c:4192
> qlink_free mm/kasan/quarantine.c:163 [inline]
> qlist_free_all+0x5e/0xc0 mm/kasan/quarantine.c:179
> kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
> __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
> kasan_slab_alloc include/linux/kasan.h:201 [inline]
> slab_post_alloc_hook mm/slub.c:3798 [inline]
> slab_alloc_node mm/slub.c:3845 [inline]
> __do_kmalloc_node mm/slub.c:3965 [inline]
> __kmalloc+0x1e2/0x4a0 mm/slub.c:3979
> kmalloc include/linux/slab.h:632 [inline]
> kzalloc include/linux/slab.h:749 [inline]
> tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
> tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
> tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
> tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
> tomoyo_path_number_perm+0x23a/0x880 security/tomoyo/file.c:723
> tomoyo_path_mknod+0x176/0x1b0 security/tomoyo/tomoyo.c:252
> security_path_mknod+0xf8/0x150 security/security.c:1791
> may_o_create fs/namei.c:3319 [inline]
> lookup_open fs/namei.c:3460 [inline]
> open_last_lookups fs/namei.c:3566 [inline]
> path_openat+0xc7c/0x3240 fs/namei.c:3796
> do_filp_open+0x235/0x490 fs/namei.c:3826
> do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
> do_sys_open fs/open.c:1421 [inline]
> __do_sys_openat fs/open.c:1437 [inline]
> __se_sys_openat fs/open.c:1432 [inline]
> __x64_sys_openat+0x247/0x2a0 fs/open.c:1432
>
> Memory state around the buggy address:
> ffff88807a58c600: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
> ffff88807a58c680: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
>> ffff88807a58c700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
> ^
> ffff88807a58c780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
> ffff88807a58c800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
> ==================================================================
>
>
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at [email protected].
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>
> If the report is already addressed, let syzbot know by replying with:
> #syz fix: exact-commit-title
>
> If you want syzbot to run the reproducer, reply with:
> #syz test: git://repo/address.git branch-or-commit-hash
> If you attach or paste a git patch, syzbot will apply it before testing.
>
> If you want to overwrite report's subsystems, reply with:
> #syz set subsystems: new-subsystem
> (See the list of subsystem names on the web dashboard)
>
> If the report is a duplicate of another one, reply with:
> #syz dup: exact-subject-of-another-report
>
> If you want to undo deduplication, reply with:
> #syz undup

2024-04-25 14:03:43

by syzbot

[permalink] [raw]

Subject: Re: [syzbot] [f2fs?] KASAN: slab-out-of-bounds Read in f2fs_get_node_info

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

][ T1] usbcore: registered new interface driver port100
[ 7.895087][ T1] usbcore: registered new interface driver nfcmrvl
[ 7.905107][ T1] Loading iSCSI transport class v2.0-870.
[ 7.922010][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues
[ 7.931607][ T1] ------------[ cut here ]------------
[ 7.932648][ T1] refcount_t: decrement hit 0; leaking memory.
[ 7.933996][ T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0
[ 7.935773][ T1] Modules linked in:
[ 7.936430][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1-syzkaller-00035-g5f5d424df7e0 #0
[ 7.938346][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[ 7.940220][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[ 7.941129][ T1] Code: b2 00 00 00 e8 e7 3e f2 fc 5b 5d c3 cc cc cc cc e8 db 3e f2 fc c6 05 d1 c3 ce 0a 01 90 48 c7 c7 60 57 fe 8b e8 37 bd b4 fc 90 <0f> 0b 90 90 eb d9 e8 bb 3e f2 fc c6 05 ae c3 ce 0a 01 90 48 c7 c7
[ 7.944817][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246
[ 7.946204][ T1] RAX: 66500b6c8a695200 RBX: ffff88814074d61c RCX: ffff8880166c8000
[ 7.947881][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 7.949474][ T1] RBP: 0000000000000004 R08: ffffffff8157ffe2 R09: fffffbfff1bf96e0
[ 7.950651][ T1] R10: dffffc0000000000 R11: fffffbfff1bf96e0 R12: ffffea000083fdc0
[ 7.952066][ T1] R13: ffffea000083fdc8 R14: 1ffffd4000107fb9 R15: 0000000000000000
[ 7.953537][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
[ 7.955023][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.956765][ T1] CR2: ffff88823ffff000 CR3: 000000000df32000 CR4: 00000000003506f0
[ 7.958239][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7.959594][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7.960858][ T1] Call Trace:
[ 7.961668][ T1] <TASK>
[ 7.962214][ T1] ? __warn+0x163/0x4e0
[ 7.963029][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.964034][ T1] ? report_bug+0x2b3/0x500
[ 7.964911][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.965754][ T1] ? handle_bug+0x3e/0x70
[ 7.966390][ T1] ? exc_invalid_op+0x1a/0x50
[ 7.967476][ T1] ? asm_exc_invalid_op+0x1a/0x20
[ 7.968393][ T1] ? __warn_printk+0x292/0x360
[ 7.969171][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.969977][ T1] ? refcount_warn_saturate+0xf9/0x1d0
[ 7.971093][ T1] __free_pages_ok+0xc54/0xd80
[ 7.971989][ T1] make_alloc_exact+0xa3/0xf0
[ 7.972707][ T1] vring_alloc_queue_split+0x20a/0x600
[ 7.974010][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10
[ 7.975606][ T1] ? vp_find_vqs+0x4c/0x4e0
[ 7.976506][ T1] ? virtscsi_probe+0x3ea/0xf60
[ 7.977276][ T1] ? virtio_dev_probe+0x991/0xaf0
[ 7.978066][ T1] ? really_probe+0x2b8/0xad0
[ 7.978729][ T1] ? driver_probe_device+0x50/0x430
[ 7.979895][ T1] vring_create_virtqueue_split+0xc6/0x310
[ 7.980907][ T1] ? ret_from_fork+0x4b/0x80
[ 7.981907][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10
[ 7.983053][ T1] vring_create_virtqueue+0xca/0x110
[ 7.984261][ T1] ? __pfx_vp_notify+0x10/0x10
[ 7.985081][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.986232][ T1] setup_vq+0xe9/0x2d0
[ 7.987144][ T1] ? __pfx_vp_notify+0x10/0x10
[ 7.988136][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.989737][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.990898][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.992460][ T1] vp_setup_vq+0xbf/0x330
[ 7.993445][ T1] ? __pfx_vp_config_changed+0x10/0x10
[ 7.994457][ T1] ? ioread16+0x2f/0x90
[ 7.995411][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.996442][ T1] vp_find_vqs_msix+0x8b2/0xc80
[ 7.997332][ T1] vp_find_vqs+0x4c/0x4e0
[ 7.998606][ T1] virtscsi_init+0x8db/0xd00
[ 7.999359][ T1] ? __pfx_virtscsi_init+0x10/0x10
[ 8.000096][ T1] ? __pfx_default_calc_sets+0x10/0x10
[ 8.001321][ T1] ? scsi_host_alloc+0xa57/0xea0
[ 8.002518][ T1] ? vp_get+0xfd/0x140
[ 8.003649][ T1] virtscsi_probe+0x3ea/0xf60
[ 8.004550][ T1] ? __pfx_virtscsi_probe+0x10/0x10
[ 8.005302][ T1] ? vp_setup_vq+0x26d/0x330
[ 8.006401][ T1] ? __pfx_vp_set_status+0x10/0x10
[ 8.007509][ T1] ? vp_set_status+0x1a/0x40
[ 8.008360][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10
[ 8.009422][ T1] ? virtio_features_ok+0x10c/0x270
[ 8.010463][ T1] virtio_dev_probe+0x991/0xaf0
[ 8.011159][ T1] ? __pfx_virtio_dev_probe+0x10/0x10
[ 8.012074][ T1] really_probe+0x2b8/0xad0
[ 8.012764][ T1] __driver_probe_device+0x1a2/0x390
[ 8.013825][ T1] driver_probe_device+0x50/0x430
[ 8.014890][ T1] __driver_attach+0x45f/0x710
[ 8.015600][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.016479][ T1] bus_for_each_dev+0x239/0x2b0
[ 8.017551][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.018401][ T1] ? __pfx_bus_for_each_dev+0x10/0x10
[ 8.019494][ T1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 8.020300][ T1] bus_add_driver+0x347/0x620
[ 8.020992][ T1] driver_register+0x23a/0x320
[ 8.021940][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.022834][ T1] virtio_scsi_init+0x65/0xe0
[ 8.023816][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.024765][ T1] do_one_initcall+0x248/0x880
[ 8.025532][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.026403][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.027532][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 8.028306][ T1] ? __pfx_parse_args+0x10/0x10
[ 8.029137][ T1] ? do_initcalls+0x1c/0x80
[ 8.029885][ T1] ? rcu_is_watching+0x15/0xb0
[ 8.031051][ T1] do_initcall_level+0x157/0x210
[ 8.032038][ T1] do_initcalls+0x3f/0x80
[ 8.032723][ T1] kernel_init_freeable+0x435/0x5d0
[ 8.033666][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 8.034835][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.035863][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.036989][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.037733][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.038424][ T1] kernel_init+0x1d/0x2b0
[ 8.039045][ T1] ret_from_fork+0x4b/0x80
[ 8.039774][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.040688][ T1] ret_from_fork_asm+0x1a/0x30
[ 8.041498][ T1] </TASK>
[ 8.041923][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 8.042985][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1-syzkaller-00035-g5f5d424df7e0 #0
[ 8.043627][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[ 8.043627][ T1] Call Trace:
[ 8.043627][ T1] <TASK>
[ 8.043627][ T1] dump_stack_lvl+0x241/0x360
[ 8.043627][ T1] ? __pfx_dump_stack_lvl+0x10/0x10
[ 8.043627][ T1] ? __pfx__printk+0x10/0x10
[ 8.043627][ T1] ? _printk+0xd5/0x120
[ 8.043627][ T1] ? vscnprintf+0x5d/0x90
[ 8.043627][ T1] panic+0x349/0x860
[ 8.043627][ T1] ? __warn+0x172/0x4e0
[ 8.043627][ T1] ? __pfx_panic+0x10/0x10
[ 8.043627][ T1] ? show_trace_log_lvl+0x4e6/0x520
[ 8.053439][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 8.053439][ T1] __warn+0x346/0x4e0
[ 8.053439][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.053439][ T1] report_bug+0x2b3/0x500
[ 8.053439][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.053439][ T1] handle_bug+0x3e/0x70
[ 8.053439][ T1] exc_invalid_op+0x1a/0x50
[ 8.053439][ T1] asm_exc_invalid_op+0x1a/0x20
[ 8.053439][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[ 8.053439][ T1] Code: b2 00 00 00 e8 e7 3e f2 fc 5b 5d c3 cc cc cc cc e8 db 3e f2 fc c6 05 d1 c3 ce 0a 01 90 48 c7 c7 60 57 fe 8b e8 37 bd b4 fc 90 <0f> 0b 90 90 eb d9 e8 bb 3e f2 fc c6 05 ae c3 ce 0a 01 90 48 c7 c7
[ 8.063386][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246
[ 8.063386][ T1] RAX: 66500b6c8a695200 RBX: ffff88814074d61c RCX: ffff8880166c8000
[ 8.063386][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 8.063386][ T1] RBP: 0000000000000004 R08: ffffffff8157ffe2 R09: fffffbfff1bf96e0
[ 8.063386][ T1] R10: dffffc0000000000 R11: fffffbfff1bf96e0 R12: ffffea000083fdc0
[ 8.063386][ T1] R13: ffffea000083fdc8 R14: 1ffffd4000107fb9 R15: 0000000000000000
[ 8.073474][ T1] ? __warn_printk+0x292/0x360
[ 8.073474][ T1] ? refcount_warn_saturate+0xf9/0x1d0
[ 8.073474][ T1] __free_pages_ok+0xc54/0xd80
[ 8.073474][ T1] make_alloc_exact+0xa3/0xf0
[ 8.073474][ T1] vring_alloc_queue_split+0x20a/0x600
[ 8.073474][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10
[ 8.073474][ T1] ? vp_find_vqs+0x4c/0x4e0
[ 8.073474][ T1] ? virtscsi_probe+0x3ea/0xf60
[ 8.073474][ T1] ? virtio_dev_probe+0x991/0xaf0
[ 8.073474][ T1] ? really_probe+0x2b8/0xad0
[ 8.073474][ T1] ? driver_probe_device+0x50/0x430
[ 8.083348][ T1] vring_create_virtqueue_split+0xc6/0x310
[ 8.083348][ T1] ? ret_from_fork+0x4b/0x80
[ 8.083348][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10
[ 8.083348][ T1] vring_create_virtqueue+0xca/0x110
[ 8.083348][ T1] ? __pfx_vp_notify+0x10/0x10
[ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.083348][ T1] setup_vq+0xe9/0x2d0
[ 8.083348][ T1] ? __pfx_vp_notify+0x10/0x10
[ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.083348][ T1] vp_setup_vq+0xbf/0x330
[ 8.093441][ T1] ? __pfx_vp_config_changed+0x10/0x10
[ 8.093441][ T1] ? ioread16+0x2f/0x90
[ 8.093441][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.093441][ T1] vp_find_vqs_msix+0x8b2/0xc80
[ 8.093441][ T1] vp_find_vqs+0x4c/0x4e0
[ 8.093441][ T1] virtscsi_init+0x8db/0xd00
[ 8.093441][ T1] ? __pfx_virtscsi_init+0x10/0x10
[ 8.093441][ T1] ? __pfx_default_calc_sets+0x10/0x10
[ 8.093441][ T1] ? scsi_host_alloc+0xa57/0xea0
[ 8.093441][ T1] ? vp_get+0xfd/0x140
[ 8.093441][ T1] virtscsi_probe+0x3ea/0xf60
[ 8.103383][ T1] ? __pfx_virtscsi_probe+0x10/0x10
[ 8.103383][ T1] ? vp_setup_vq+0x26d/0x330
[ 8.103383][ T1] ? __pfx_vp_set_status+0x10/0x10
[ 8.103383][ T1] ? vp_set_status+0x1a/0x40
[ 8.103383][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10
[ 8.103383][ T1] ? virtio_features_ok+0x10c/0x270
[ 8.103383][ T1] virtio_dev_probe+0x991/0xaf0
[ 8.103383][ T1] ? __pfx_virtio_dev_probe+0x10/0x10
[ 8.103383][ T1] really_probe+0x2b8/0xad0
[ 8.103383][ T1] __driver_probe_device+0x1a2/0x390
[ 8.113498][ T1] driver_probe_device+0x50/0x430
[ 8.113498][ T1] __driver_attach+0x45f/0x710
[ 8.113498][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.113498][ T1] bus_for_each_dev+0x239/0x2b0
[ 8.113498][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.113498][ T1] ? __pfx_bus_for_each_dev+0x10/0x10
[ 8.113498][ T1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 8.113498][ T1] bus_add_driver+0x347/0x620
[ 8.113498][ T1] driver_register+0x23a/0x320
[ 8.113498][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.113498][ T1] virtio_scsi_init+0x65/0xe0
[ 8.123379][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.123379][ T1] do_one_initcall+0x248/0x880
[ 8.123379][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.123379][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.123379][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 8.123379][ T1] ? __pfx_parse_args+0x10/0x10
[ 8.123379][ T1] ? do_initcalls+0x1c/0x80
[ 8.123379][ T1] ? rcu_is_watching+0x15/0xb0
[ 8.123379][ T1] do_initcall_level+0x157/0x210
[ 8.123379][ T1] do_initcalls+0x3f/0x80
[ 8.123379][ T1] kernel_init_freeable+0x435/0x5d0
[ 8.133466][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 8.133466][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.133466][ T1] kernel_init+0x1d/0x2b0
[ 8.133466][ T1] ret_from_fork+0x4b/0x80
[ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.133466][ T1] ret_from_fork_asm+0x1a/0x30
[ 8.133466][ T1] </TASK>
[ 8.133466][ T1] Kernel Offset: disabled
[ 8.133466][ T1] Rebooting in 86400 seconds..

syzkaller build log:
go env (err=<nil>)
GO111MODULE='auto'
GOARCH='amd64'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.21.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build543475362=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at 36c961ad9
nothing to commit, working tree clean

tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=36c961ad9dc0e5b72efc784a57717424a02bfa00 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240422-084642'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=36c961ad9dc0e5b72efc784a57717424a02bfa00 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240422-084642'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=36c961ad9dc0e5b72efc784a57717424a02bfa00 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240422-084642'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"36c961ad9dc0e5b72efc784a57717424a02bfa00\"

Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=1241f68b180000

Tested on:

commit: 5f5d424d f2fs: fix to do sanity check on i_xattr_nid i..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot
kernel config: https://syzkaller.appspot.com/x/.config?x=1ace29459a0a1915
dashboard link: https://syzkaller.appspot.com/bug?extid=3694e283cf5c40df6d14
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.

2024-04-26 13:14:48

by Chao Yu

[permalink] [raw]

Subject: Re: [syzbot] [f2fs?] KASAN: slab-out-of-bounds Read in f2fs_get_node_info

2024-04-26 13:35:29

by syzbot

[permalink] [raw]

Subject: Re: [syzbot] [f2fs?] KASAN: slab-out-of-bounds Read in f2fs_get_node_info

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: [email protected]

Tested on:

commit: 77d6a556 f2fs: fix to do sanity check on i_xattr_nid i..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot
console output: https://syzkaller.appspot.com/x/log.txt?x=1535f237180000
kernel config: https://syzkaller.appspot.com/x/.config?x=5a05c230e142f2bc
dashboard link: https://syzkaller.appspot.com/bug?extid=3694e283cf5c40df6d14
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.