* [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_inode_item_push
@ 2024-04-10 12:45 syzbot
2024-09-26 21:46 ` syzbot
0 siblings, 1 reply; 4+ messages in thread
From: syzbot @ 2024-04-10 12:45 UTC (permalink / raw)
To: chandan.babu, djwong, linux-fsdevel, linux-kernel, linux-xfs,
syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 707081b61156 Merge branch 'for-next/core', remote-tracking..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=168b2fe3180000
kernel config: https://syzkaller.appspot.com/x/.config?x=caeac3f3565b057a
dashboard link: https://syzkaller.appspot.com/bug?extid=1a28995e12fd13faa44e
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6cad68bf7532/disk-707081b6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1a27e5400778/vmlinux-707081b6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/67dfc53755d0/Image-707081b6.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1a28995e12fd13faa44e@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x248/0x290 fs/xfs/xfs_inode_item.c:743
Read of size 8 at addr ffff0000ddfe0bb8 by task xfsaild/loop0/7856
CPU: 0 PID: 7856 Comm: xfsaild/loop0 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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:377 [inline]
print_report+0x178/0x518 mm/kasan/report.c:488
kasan_report+0xd8/0x138 mm/kasan/report.c:601
__asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
xfs_inode_item_push+0x248/0x290 fs/xfs/xfs_inode_item.c:743
xfsaild_push_item fs/xfs/xfs_trans_ail.c:414 [inline]
xfsaild_push fs/xfs/xfs_trans_ail.c:486 [inline]
xfsaild+0xbe8/0x2c18 fs/xfs/xfs_trans_ail.c:671
kthread+0x288/0x310 kernel/kthread.c:388
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Allocated by task 7816:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x40/0x78 mm/kasan/common.c:68
kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:575
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
slab_alloc_node mm/slub.c:3860 [inline]
kmem_cache_alloc+0x1dc/0x488 mm/slub.c:3867
kmem_cache_zalloc include/linux/slab.h:701 [inline]
xfs_inode_item_init+0x3c/0xc0 fs/xfs/xfs_inode_item.c:838
xfs_trans_ijoin+0xd8/0x114 fs/xfs/libxfs/xfs_trans_inode.c:36
xfs_create+0x8a4/0xf9c fs/xfs/xfs_inode.c:1040
xfs_generic_create+0x3c8/0xb10 fs/xfs/xfs_iops.c:199
xfs_vn_create+0x44/0x58 fs/xfs/xfs_iops.c:275
lookup_open fs/namei.c:3500 [inline]
open_last_lookups fs/namei.c:3569 [inline]
path_openat+0xfb4/0x2830 fs/namei.c:3799
do_filp_open+0x1bc/0x3cc fs/namei.c:3829
do_sys_openat2+0x124/0x1b8 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_openat fs/open.c:1435 [inline]
__se_sys_openat fs/open.c:1430 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1430
__invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Freed by task 22:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x40/0x78 mm/kasan/common.c:68
kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:589
poison_slab_object+0x124/0x18c mm/kasan/common.c:240
__kasan_slab_free+0x3c/0x70 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kmem_cache_free+0x15c/0x3d4 mm/slub.c:4363
xfs_inode_item_destroy+0x80/0x94 fs/xfs/xfs_inode_item.c:860
xfs_inode_free_callback+0x154/0x1cc fs/xfs/xfs_icache.c:145
rcu_do_batch kernel/rcu/tree.c:2190 [inline]
rcu_core+0x890/0x1b34 kernel/rcu/tree.c:2465
rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2482
__do_softirq+0x2d8/0xce4 kernel/softirq.c:553
The buggy address belongs to the object at ffff0000ddfe0b88
which belongs to the cache xfs_ili of size 264
The buggy address is located 48 bytes inside of
freed 264-byte region [ffff0000ddfe0b88, ffff0000ddfe0c90)
The buggy address belongs to the physical page:
page:00000000b7c34688 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000ddfe0668 pfn:0x11dfe0
flags: 0x5ffc00000000800(slab|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000800 ffff0000c559d140 dead000000000122 0000000000000000
raw: ffff0000ddfe0668 00000000800c0004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000ddfe0a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff0000ddfe0b00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
>ffff0000ddfe0b80: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000ddfe0c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000ddfe0c80: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb
==================================================================
---
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 syzkaller@googlegroups.com.
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 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
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_inode_item_push
2024-04-10 12:45 [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_inode_item_push syzbot
@ 2024-09-26 21:46 ` syzbot
2024-11-01 9:27 ` Julian Sun
0 siblings, 1 reply; 4+ messages in thread
From: syzbot @ 2024-09-26 21:46 UTC (permalink / raw)
To: chandan.babu, djwong, linux-fsdevel, linux-kernel, linux-xfs,
syzkaller-bugs
syzbot has found a reproducer for the following issue on:
HEAD commit: 11a299a7933e Merge tag 'for-6.12/block-20240925' of git://..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1378aaa9980000
kernel config: https://syzkaller.appspot.com/x/.config?x=31f49563bb05c4a8
dashboard link: https://syzkaller.appspot.com/bug?extid=1a28995e12fd13faa44e
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=164f7627980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10923a80580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e97035004495/disk-11a299a7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0be318a25b1d/vmlinux-11a299a7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/91f17271baa3/bzImage-11a299a7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/971400d21e6d/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1a28995e12fd13faa44e@syzkaller.appspotmail.com
BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:775
Read of size 8 at addr ffff8880774cfa70 by task xfsaild/loop2/10928
CPU: 1 UID: 0 PID: 10928 Comm: xfsaild/loop2 Not tainted 6.11.0-syzkaller-10669-g11a299a7933e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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
xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:775
xfsaild_push_item fs/xfs/xfs_trans_ail.c:395 [inline]
xfsaild_push fs/xfs/xfs_trans_ail.c:523 [inline]
xfsaild+0x112a/0x2e00 fs/xfs/xfs_trans_ail.c:705
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Allocated by task 10907:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4086 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4142
xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:870
xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
xfs_create+0x8a0/0xf60 fs/xfs/xfs_inode.c:720
xfs_generic_create+0x5d5/0xf50 fs/xfs/xfs_iops.c:213
vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
do_mkdirat+0x264/0x3a0 fs/namei.c:4280
__do_sys_mkdir fs/namei.c:4300 [inline]
__se_sys_mkdir fs/namei.c:4298 [inline]
__x64_sys_mkdir+0x6c/0x80 fs/namei.c:4298
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
Freed by task 5213:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2343 [inline]
slab_free mm/slub.c:4580 [inline]
kmem_cache_free+0x1a2/0x420 mm/slub.c:4682
xfs_inode_free_callback+0x152/0x1d0 fs/xfs/xfs_icache.c:158
rcu_do_batch kernel/rcu/tree.c:2567 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
The buggy address belongs to the object at ffff8880774cfa40
which belongs to the cache xfs_ili of size 264
The buggy address is located 48 bytes inside of
freed 264-byte region [ffff8880774cfa40, ffff8880774cfb48)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x774cf
ksm flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff888142abe140 ffffea0001d56080 0000000000000007
raw: 0000000000000000 00000000000c000c 00000001f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x52c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_RECLAIMABLE), pid 5289, tgid 5289 (syz-executor269), ts 76754520423, free_ts 21942205490
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1545 [inline]
get_page_from_freelist+0x3039/0x3180 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
alloc_slab_page+0x6a/0x120 mm/slub.c:2413
allocate_slab+0x5a/0x2f0 mm/slub.c:2579
new_slab mm/slub.c:2632 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3819
__slab_alloc+0x58/0xa0 mm/slub.c:3909
__slab_alloc_node mm/slub.c:3962 [inline]
slab_alloc_node mm/slub.c:4123 [inline]
kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4142
xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:870
xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
xfs_icreate+0x13a/0x1f0 fs/xfs/xfs_inode.c:593
xfs_symlink+0xa74/0x1230 fs/xfs/xfs_symlink.c:170
xfs_vn_symlink+0x1f5/0x740 fs/xfs/xfs_iops.c:443
vfs_symlink+0x137/0x2e0 fs/namei.c:4615
do_symlinkat+0x222/0x3a0 fs/namei.c:4641
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcd0/0xf00 mm/page_alloc.c:2638
free_contig_range+0x152/0x550 mm/page_alloc.c:6748
destroy_args+0x8a/0x840 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x248/0x880 init/main.c:1269
do_initcall_level+0x157/0x210 init/main.c:1331
do_initcalls+0x3f/0x80 init/main.c:1347
kernel_init_freeable+0x435/0x5d0 init/main.c:1580
kernel_init+0x1d/0x2b0 init/main.c:1469
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff8880774cf900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880774cf980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880774cfa00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
^
ffff8880774cfa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880774cfb00: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
==================================================================
---
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_inode_item_push
2024-09-26 21:46 ` syzbot
@ 2024-11-01 9:27 ` Julian Sun
2024-11-01 9:50 ` syzbot
0 siblings, 1 reply; 4+ messages in thread
From: Julian Sun @ 2024-11-01 9:27 UTC (permalink / raw)
To: syzbot, chandan.babu, djwong, linux-fsdevel, linux-kernel,
linux-xfs, syzkaller-bugs
On Thu, 2024-09-26 at 14:46 -0700, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 11a299a7933e Merge tag 'for-6.12/block-20240925' of
> git://..
> git tree: upstream
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=1378aaa9980000
> kernel config:
> https://syzkaller.appspot.com/x/.config?x=31f49563bb05c4a8
> dashboard link:
> https://syzkaller.appspot.com/bug?extid=1a28995e12fd13faa44e
> 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=164f7627980000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10923a80580000
>
> Downloadable assets:
> disk image:
> https://storage.googleapis.com/syzbot-assets/e97035004495/disk-11a299a7.raw.xz
> vmlinux:
> https://storage.googleapis.com/syzbot-assets/0be318a25b1d/vmlinux-11a299a7.xz
> kernel image:
> https://storage.googleapis.com/syzbot-assets/91f17271baa3/bzImage-11a299a7.xz
> mounted in repro:
> https://storage.googleapis.com/syzbot-assets/971400d21e6d/mount_0.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the
> commit:
> Reported-by: syzbot+1a28995e12fd13faa44e@syzkaller.appspotmail.com
>
> BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x293/0x2e0
> fs/xfs/xfs_inode_item.c:775
> Read of size 8 at addr ffff8880774cfa70 by task xfsaild/loop2/10928
>
> CPU: 1 UID: 0 PID: 10928 Comm: xfsaild/loop2 Not tainted 6.11.0-
> syzkaller-10669-g11a299a7933e #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 09/13/2024
> Call Trace:
> <TASK>
> __dump_stack lib/dump_stack.c:94 [inline]
> dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
> 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
> xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:775
> xfsaild_push_item fs/xfs/xfs_trans_ail.c:395 [inline]
> xfsaild_push fs/xfs/xfs_trans_ail.c:523 [inline]
> xfsaild+0x112a/0x2e00 fs/xfs/xfs_trans_ail.c:705
> kthread+0x2f0/0x390 kernel/kthread.c:389
> ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
> </TASK>
>
> Allocated by task 10907:
> kasan_save_stack mm/kasan/common.c:47 [inline]
> kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
> unpoison_slab_object mm/kasan/common.c:319 [inline]
> __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
> kasan_slab_alloc include/linux/kasan.h:247 [inline]
> slab_post_alloc_hook mm/slub.c:4086 [inline]
> slab_alloc_node mm/slub.c:4135 [inline]
> kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4142
> xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:870
> xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
> xfs_create+0x8a0/0xf60 fs/xfs/xfs_inode.c:720
> xfs_generic_create+0x5d5/0xf50 fs/xfs/xfs_iops.c:213
> vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
> do_mkdirat+0x264/0x3a0 fs/namei.c:4280
> __do_sys_mkdir fs/namei.c:4300 [inline]
> __se_sys_mkdir fs/namei.c:4298 [inline]
> __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4298
> 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
>
> Freed by task 5213:
> kasan_save_stack mm/kasan/common.c:47 [inline]
> kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
> kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
> poison_slab_object mm/kasan/common.c:247 [inline]
> __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
> kasan_slab_free include/linux/kasan.h:230 [inline]
> slab_free_hook mm/slub.c:2343 [inline]
> slab_free mm/slub.c:4580 [inline]
> kmem_cache_free+0x1a2/0x420 mm/slub.c:4682
> xfs_inode_free_callback+0x152/0x1d0 fs/xfs/xfs_icache.c:158
> rcu_do_batch kernel/rcu/tree.c:2567 [inline]
> rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823
> handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
> __do_softirq kernel/softirq.c:588 [inline]
> invoke_softirq kernel/softirq.c:428 [inline]
> __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
> irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
> instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037
> [inline]
> sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
> asm_sysvec_apic_timer_interrupt+0x1a/0x20
> arch/x86/include/asm/idtentry.h:702
>
> The buggy address belongs to the object at ffff8880774cfa40
> which belongs to the cache xfs_ili of size 264
> The buggy address is located 48 bytes inside of
> freed 264-byte region [ffff8880774cfa40, ffff8880774cfb48)
>
> The buggy address belongs to the physical page:
> page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0
> pfn:0x774cf
> ksm flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
> page_type: f5(slab)
> raw: 00fff00000000000 ffff888142abe140 ffffea0001d56080 0000000000000007
> raw: 0000000000000000 00000000000c000c 00000001f5000000 0000000000000000
> page dumped because: kasan: bad access detected
> page_owner tracks the page as allocated
> page last allocated via order 0, migratetype Reclaimable, gfp_mask
> 0x52c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_RECLAIMABLE)
> , pid 5289, tgid 5289 (syz-executor269), ts 76754520423, free_ts
> 21942205490
> set_page_owner include/linux/page_owner.h:32 [inline]
> post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
> prep_new_page mm/page_alloc.c:1545 [inline]
> get_page_from_freelist+0x3039/0x3180 mm/page_alloc.c:3457
> __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4733
> alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
> alloc_slab_page+0x6a/0x120 mm/slub.c:2413
> allocate_slab+0x5a/0x2f0 mm/slub.c:2579
> new_slab mm/slub.c:2632 [inline]
> ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3819
> __slab_alloc+0x58/0xa0 mm/slub.c:3909
> __slab_alloc_node mm/slub.c:3962 [inline]
> slab_alloc_node mm/slub.c:4123 [inline]
> kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4142
> xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:870
> xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
> xfs_icreate+0x13a/0x1f0 fs/xfs/xfs_inode.c:593
> xfs_symlink+0xa74/0x1230 fs/xfs/xfs_symlink.c:170
> xfs_vn_symlink+0x1f5/0x740 fs/xfs/xfs_iops.c:443
> vfs_symlink+0x137/0x2e0 fs/namei.c:4615
> do_symlinkat+0x222/0x3a0 fs/namei.c:4641
> page last free pid 1 tgid 1 stack trace:
> reset_page_owner include/linux/page_owner.h:25 [inline]
> free_pages_prepare mm/page_alloc.c:1108 [inline]
> free_unref_page+0xcd0/0xf00 mm/page_alloc.c:2638
> free_contig_range+0x152/0x550 mm/page_alloc.c:6748
> destroy_args+0x8a/0x840 mm/debug_vm_pgtable.c:1017
> debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397
> do_one_initcall+0x248/0x880 init/main.c:1269
> do_initcall_level+0x157/0x210 init/main.c:1331
> do_initcalls+0x3f/0x80 init/main.c:1347
> kernel_init_freeable+0x435/0x5d0 init/main.c:1580
> kernel_init+0x1d/0x2b0 init/main.c:1469
> ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>
> Memory state around the buggy address:
> ffff8880774cf900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff8880774cf980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> > ffff8880774cfa00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
> ^
> ffff8880774cfa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff8880774cfb00: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
> ==================================================================
>
>
> ---
> 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.
#syz test
--
Julian Sun <sunjunchao2870@gmail.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_inode_item_push
2024-11-01 9:27 ` Julian Sun
@ 2024-11-01 9:50 ` syzbot
0 siblings, 0 replies; 4+ messages in thread
From: syzbot @ 2024-11-01 9:50 UTC (permalink / raw)
To: chandan.babu, djwong, linux-fsdevel, linux-kernel, linux-xfs,
sunjunchao2870, syzkaller-bugs
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KASAN: slab-use-after-free Read in xfs_inode_item_push
==================================================================
BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:775
Read of size 8 at addr ffff888061c9b698 by task xfsaild/loop2/7823
CPU: 1 UID: 0 PID: 7823 Comm: xfsaild/loop2 Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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
xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:775
xfsaild_push_item fs/xfs/xfs_trans_ail.c:395 [inline]
xfsaild_push fs/xfs/xfs_trans_ail.c:523 [inline]
xfsaild+0x112a/0x2e00 fs/xfs/xfs_trans_ail.c:705
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Allocated by task 7799:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:870
xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
xfs_create+0x8a0/0xf60 fs/xfs/xfs_inode.c:720
xfs_generic_create+0x5d5/0xf50 fs/xfs/xfs_iops.c:213
vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
do_mkdirat+0x264/0x3a0 fs/namei.c:4280
__do_sys_mkdirat fs/namei.c:4295 [inline]
__se_sys_mkdirat fs/namei.c:4293 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
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
Freed by task 6015:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kmem_cache_free+0x1a2/0x420 mm/slub.c:4681
xfs_inode_free_callback+0x152/0x1d0 fs/xfs/xfs_icache.c:158
rcu_do_batch kernel/rcu/tree.c:2567 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
The buggy address belongs to the object at ffff888061c9b668
which belongs to the cache xfs_ili of size 264
The buggy address is located 48 bytes inside of
freed 264-byte region [ffff888061c9b668, ffff888061c9b770)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x61c9b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801d3c8dc0 ffffea00017d0300 0000000000000004
raw: 0000000000000000 00000000800c000c 00000001f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x52c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_RECLAIMABLE), pid 6527, tgid 6525 (syz.4.33), ts 123832632595, free_ts 120134322172
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1545 [inline]
get_page_from_freelist+0x3033/0x3180 mm/page_alloc.c:3457
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
alloc_slab_page+0x6a/0x120 mm/slub.c:2412
allocate_slab+0x5a/0x2f0 mm/slub.c:2578
new_slab mm/slub.c:2631 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818
__slab_alloc+0x58/0xa0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4141
xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:870
xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
xfs_create+0x8a0/0xf60 fs/xfs/xfs_inode.c:720
xfs_generic_create+0x5d5/0xf50 fs/xfs/xfs_iops.c:213
vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
do_mkdirat+0x264/0x3a0 fs/namei.c:4280
__do_sys_mkdirat fs/namei.c:4295 [inline]
__se_sys_mkdirat fs/namei.c:4293 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
page last free pid 4674 tgid 4674 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcd0/0xf00 mm/page_alloc.c:2638
discard_slab mm/slub.c:2677 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3145
put_cpu_partial+0x17c/0x250 mm/slub.c:3220
__slab_free+0x2ea/0x3d0 mm/slub.c:4449
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
getname_flags+0xb7/0x540 fs/namei.c:139
do_sys_openat2+0xd2/0x1d0 fs/open.c:1409
do_sys_open fs/open.c:1430 [inline]
__do_sys_openat fs/open.c:1446 [inline]
__se_sys_openat fs/open.c:1441 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1441
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
Memory state around the buggy address:
ffff888061c9b580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888061c9b600: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb
>ffff888061c9b680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888061c9b700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
ffff888061c9b780: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb
==================================================================
Tested on:
commit: 6c52d4da Merge tag 'for-linus' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13345340580000
kernel config: https://syzkaller.appspot.com/x/.config?x=e9b3366c241ed3c7
dashboard link: https://syzkaller.appspot.com/bug?extid=1a28995e12fd13faa44e
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Note: no patches were applied.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-11-01 9:50 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-04-10 12:45 [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_inode_item_push syzbot
2024-09-26 21:46 ` syzbot
2024-11-01 9:27 ` Julian Sun
2024-11-01 9:50 ` syzbot
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).