[v6.1] KASAN: use-after-free Read in iomap_finish_ioend
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syzbot
Jul 5, 2024, 5:45:29 PM (2 days ago) Jul 5
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 7753af06eebf Linux 6.1.97
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13d43dc1980000
kernel config: https://syzkaller.appspot.com/x/.config?x=8598d0ff7c47577b
dashboard link: https://syzkaller.appspot.com/bug?extid=12141bca62eb3237e50c
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2ba92bc446d9/disk-7753af06.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/96a956b7234b/vmlinux-7753af06.xz
kernel image: https://storage.googleapis.com/syzbot-assets/eb054c41985f/bzImage-7753af06.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+12141b...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in iomap_finish_ioend+0x898/0x960 fs/iomap/buffered-io.c:1319
Read of size 8 at addr ffff88805ecb47d0 by task kworker/1:4/3590
CPU: 1 PID: 3590 Comm: kworker/1:4 Not tainted 6.1.97-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: xfs-conv/loop3 xfs_end_io
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x15f/0x4f0 mm/kasan/report.c:395
kasan_report+0x136/0x160 mm/kasan/report.c:495
iomap_finish_ioend+0x898/0x960 fs/iomap/buffered-io.c:1319
iomap_finish_ioends+0x1ab/0x390 fs/iomap/buffered-io.c:1343
xfs_end_ioend+0x36e/0x4d0 fs/xfs/xfs_aops.c:134
xfs_end_io+0x2e1/0x370 fs/xfs/xfs_aops.c:171
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Allocated by task 10825:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x10c/0x2d0 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
xfs_inode_alloc+0x84/0x6c0 fs/xfs/xfs_icache.c:81
xfs_iget_cache_miss fs/xfs/xfs_icache.c:590 [inline]
xfs_iget+0xbe5/0x3360 fs/xfs/xfs_icache.c:756
xfs_lookup+0x2b2/0x4e0 fs/xfs/xfs_inode.c:669
xfs_vn_lookup+0x18e/0x290 fs/xfs/xfs_iops.c:304
lookup_open fs/namei.c:3462 [inline]
open_last_lookups fs/namei.c:3552 [inline]
path_openat+0x10fb/0x2e60 fs/namei.c:3782
do_filp_open+0x230/0x480 fs/namei.c:3812
do_sys_openat2+0x13b/0x500 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1345
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 3966:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook mm/slub.c:1750 [inline]
slab_free mm/slub.c:3661 [inline]
kmem_cache_free+0x292/0x510 mm/slub.c:3683
rcu_do_batch kernel/rcu/tree.c:2296 [inline]
rcu_core+0xad5/0x1810 kernel/rcu/tree.c:2556
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844
__xfs_inode_free fs/xfs/xfs_icache.c:161 [inline]
xfs_reclaim_inode fs/xfs/xfs_icache.c:958 [inline]
xfs_icwalk_process_inode fs/xfs/xfs_icache.c:1640 [inline]
xfs_icwalk_ag+0x13c4/0x1b70 fs/xfs/xfs_icache.c:1722
xfs_icwalk fs/xfs/xfs_icache.c:1771 [inline]
xfs_reclaim_inodes+0x1f3/0x300 fs/xfs/xfs_icache.c:991
xfs_unmount_flush_inodes+0xaf/0xc0 fs/xfs/xfs_mount.c:594
xfs_unmountfs+0xc0/0x280 fs/xfs/xfs_mount.c:1071
xfs_fs_put_super+0x6c/0x2c0 fs/xfs/xfs_super.c:1118
generic_shutdown_super+0x130/0x340 fs/super.c:501
kill_block_super+0x7a/0xe0 fs/super.c:1459
deactivate_locked_super+0xa0/0x110 fs/super.c:332
cleanup_mnt+0x490/0x520 fs/namespace.c:1186
task_work_run+0x246/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
insert_work+0x54/0x3d0 kernel/workqueue.c:1361
__queue_work+0xb4b/0xf90 kernel/workqueue.c:1520
queue_work_on+0x14b/0x250 kernel/workqueue.c:1548
queue_work include/linux/workqueue.h:512 [inline]
xfs_end_bio+0xf2/0x1d0 fs/xfs/xfs_aops.c:186
iomap_submit_ioend fs/iomap/buffered-io.c:1458 [inline]
iomap_writepages+0x1e3/0x240 fs/iomap/buffered-io.c:1790
xfs_vm_writepages+0x135/0x190 fs/xfs/xfs_aops.c:503
do_writepages+0x3a2/0x670 mm/page-writeback.c:2469
filemap_fdatawrite_wbc+0x121/0x180 mm/filemap.c:388
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
file_write_and_wait_range+0x1ca/0x2b0 mm/filemap.c:774
xfs_file_fsync+0x1e5/0xae0 fs/xfs/xfs_file.c:151
generic_write_sync include/linux/fs.h:2957 [inline]
xfs_file_buffered_write+0xaa6/0xbe0 fs/xfs/xfs_file.c:764
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff88805ecb45c0
which belongs to the cache xfs_inode of size 1808
The buggy address is located 528 bytes inside of
1808-byte region [ffff88805ecb45c0, ffff88805ecb4cd0)
The buggy address belongs to the physical page:
page:ffffea00017b2c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88805ecb7440 pfn:0x5ecb0
head:ffffea00017b2c00 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff88806138a701
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888016b8ba00
raw: ffff88805ecb7440 0000000080100009 00000001ffffffff ffff88806138a701
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4147, tgid 4144 (syz.4.152), ts 89950319487, free_ts 85876922518
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517
prep_new_page mm/page_alloc.c:2524 [inline]
get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4283
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5551
alloc_slab_page+0x6a/0x150 mm/slub.c:1794
allocate_slab mm/slub.c:1939 [inline]
new_slab+0x84/0x2d0 mm/slub.c:1992
___slab_alloc+0xc20/0x1270 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1a5/0x2d0 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
xfs_inode_alloc+0x84/0x6c0 fs/xfs/xfs_icache.c:81
xfs_iget_cache_miss fs/xfs/xfs_icache.c:590 [inline]
xfs_iget+0xbe5/0x3360 fs/xfs/xfs_icache.c:756
xfs_mountfs+0xf57/0x1f00 fs/xfs/xfs_mount.c:848
xfs_fs_fill_super+0x1145/0x13a0 fs/xfs/xfs_super.c:1681
get_tree_bdev+0x3fe/0x620 fs/super.c:1355
vfs_get_tree+0x88/0x270 fs/super.c:1562
do_new_mount+0x2ba/0xb40 fs/namespace.c:3051
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1444 [inline]
free_pcp_prepare mm/page_alloc.c:1494 [inline]
free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3362
free_unref_page+0x33/0x3e0 mm/page_alloc.c:3457
free_slab mm/slub.c:2031 [inline]
discard_slab mm/slub.c:2037 [inline]
__unfreeze_partials+0x1b7/0x210 mm/slub.c:2586
put_cpu_partial+0x17b/0x250 mm/slub.c:2662
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
mt_alloc_one lib/maple_tree.c:152 [inline]
mas_alloc_nodes+0x276/0x800 lib/maple_tree.c:1277
mas_node_count_gfp lib/maple_tree.c:1359 [inline]
mas_preallocate+0x12d/0x350 lib/maple_tree.c:5804
do_mas_align_munmap+0x2c4/0x15f0 mm/mmap.c:2443
do_mas_munmap+0x246/0x2b0 mm/mmap.c:2640
mmap_region+0x8e6/0x1fa0 mm/mmap.c:2688
do_mmap+0x8c5/0xf60 mm/mmap.c:1425
vm_mmap_pgoff+0x1ca/0x2d0 mm/util.c:520
Memory state around the buggy address:
ffff88805ecb4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88805ecb4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88805ecb4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88805ecb4800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88805ecb4880: fb fb fb fb fb fb fb fb fb fb fb 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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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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
syzbot found the following issue on:
HEAD commit: 7753af06eebf Linux 6.1.97
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13d43dc1980000
kernel config: https://syzkaller.appspot.com/x/.config?x=8598d0ff7c47577b
dashboard link: https://syzkaller.appspot.com/bug?extid=12141bca62eb3237e50c
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2ba92bc446d9/disk-7753af06.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/96a956b7234b/vmlinux-7753af06.xz
kernel image: https://storage.googleapis.com/syzbot-assets/eb054c41985f/bzImage-7753af06.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+12141b...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in iomap_finish_ioend+0x898/0x960 fs/iomap/buffered-io.c:1319
Read of size 8 at addr ffff88805ecb47d0 by task kworker/1:4/3590
CPU: 1 PID: 3590 Comm: kworker/1:4 Not tainted 6.1.97-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: xfs-conv/loop3 xfs_end_io
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x15f/0x4f0 mm/kasan/report.c:395
kasan_report+0x136/0x160 mm/kasan/report.c:495
iomap_finish_ioend+0x898/0x960 fs/iomap/buffered-io.c:1319
iomap_finish_ioends+0x1ab/0x390 fs/iomap/buffered-io.c:1343
xfs_end_ioend+0x36e/0x4d0 fs/xfs/xfs_aops.c:134
xfs_end_io+0x2e1/0x370 fs/xfs/xfs_aops.c:171
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Allocated by task 10825:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x10c/0x2d0 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
xfs_inode_alloc+0x84/0x6c0 fs/xfs/xfs_icache.c:81
xfs_iget_cache_miss fs/xfs/xfs_icache.c:590 [inline]
xfs_iget+0xbe5/0x3360 fs/xfs/xfs_icache.c:756
xfs_lookup+0x2b2/0x4e0 fs/xfs/xfs_inode.c:669
xfs_vn_lookup+0x18e/0x290 fs/xfs/xfs_iops.c:304
lookup_open fs/namei.c:3462 [inline]
open_last_lookups fs/namei.c:3552 [inline]
path_openat+0x10fb/0x2e60 fs/namei.c:3782
do_filp_open+0x230/0x480 fs/namei.c:3812
do_sys_openat2+0x13b/0x500 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1345
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 3966:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook mm/slub.c:1750 [inline]
slab_free mm/slub.c:3661 [inline]
kmem_cache_free+0x292/0x510 mm/slub.c:3683
rcu_do_batch kernel/rcu/tree.c:2296 [inline]
rcu_core+0xad5/0x1810 kernel/rcu/tree.c:2556
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844
__xfs_inode_free fs/xfs/xfs_icache.c:161 [inline]
xfs_reclaim_inode fs/xfs/xfs_icache.c:958 [inline]
xfs_icwalk_process_inode fs/xfs/xfs_icache.c:1640 [inline]
xfs_icwalk_ag+0x13c4/0x1b70 fs/xfs/xfs_icache.c:1722
xfs_icwalk fs/xfs/xfs_icache.c:1771 [inline]
xfs_reclaim_inodes+0x1f3/0x300 fs/xfs/xfs_icache.c:991
xfs_unmount_flush_inodes+0xaf/0xc0 fs/xfs/xfs_mount.c:594
xfs_unmountfs+0xc0/0x280 fs/xfs/xfs_mount.c:1071
xfs_fs_put_super+0x6c/0x2c0 fs/xfs/xfs_super.c:1118
generic_shutdown_super+0x130/0x340 fs/super.c:501
kill_block_super+0x7a/0xe0 fs/super.c:1459
deactivate_locked_super+0xa0/0x110 fs/super.c:332
cleanup_mnt+0x490/0x520 fs/namespace.c:1186
task_work_run+0x246/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
insert_work+0x54/0x3d0 kernel/workqueue.c:1361
__queue_work+0xb4b/0xf90 kernel/workqueue.c:1520
queue_work_on+0x14b/0x250 kernel/workqueue.c:1548
queue_work include/linux/workqueue.h:512 [inline]
xfs_end_bio+0xf2/0x1d0 fs/xfs/xfs_aops.c:186
iomap_submit_ioend fs/iomap/buffered-io.c:1458 [inline]
iomap_writepages+0x1e3/0x240 fs/iomap/buffered-io.c:1790
xfs_vm_writepages+0x135/0x190 fs/xfs/xfs_aops.c:503
do_writepages+0x3a2/0x670 mm/page-writeback.c:2469
filemap_fdatawrite_wbc+0x121/0x180 mm/filemap.c:388
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
file_write_and_wait_range+0x1ca/0x2b0 mm/filemap.c:774
xfs_file_fsync+0x1e5/0xae0 fs/xfs/xfs_file.c:151
generic_write_sync include/linux/fs.h:2957 [inline]
xfs_file_buffered_write+0xaa6/0xbe0 fs/xfs/xfs_file.c:764
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff88805ecb45c0
which belongs to the cache xfs_inode of size 1808
The buggy address is located 528 bytes inside of
1808-byte region [ffff88805ecb45c0, ffff88805ecb4cd0)
The buggy address belongs to the physical page:
page:ffffea00017b2c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88805ecb7440 pfn:0x5ecb0
head:ffffea00017b2c00 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff88806138a701
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888016b8ba00
raw: ffff88805ecb7440 0000000080100009 00000001ffffffff ffff88806138a701
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4147, tgid 4144 (syz.4.152), ts 89950319487, free_ts 85876922518
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517
prep_new_page mm/page_alloc.c:2524 [inline]
get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4283
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5551
alloc_slab_page+0x6a/0x150 mm/slub.c:1794
allocate_slab mm/slub.c:1939 [inline]
new_slab+0x84/0x2d0 mm/slub.c:1992
___slab_alloc+0xc20/0x1270 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1a5/0x2d0 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
xfs_inode_alloc+0x84/0x6c0 fs/xfs/xfs_icache.c:81
xfs_iget_cache_miss fs/xfs/xfs_icache.c:590 [inline]
xfs_iget+0xbe5/0x3360 fs/xfs/xfs_icache.c:756
xfs_mountfs+0xf57/0x1f00 fs/xfs/xfs_mount.c:848
xfs_fs_fill_super+0x1145/0x13a0 fs/xfs/xfs_super.c:1681
get_tree_bdev+0x3fe/0x620 fs/super.c:1355
vfs_get_tree+0x88/0x270 fs/super.c:1562
do_new_mount+0x2ba/0xb40 fs/namespace.c:3051
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1444 [inline]
free_pcp_prepare mm/page_alloc.c:1494 [inline]
free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3362
free_unref_page+0x33/0x3e0 mm/page_alloc.c:3457
free_slab mm/slub.c:2031 [inline]
discard_slab mm/slub.c:2037 [inline]
__unfreeze_partials+0x1b7/0x210 mm/slub.c:2586
put_cpu_partial+0x17b/0x250 mm/slub.c:2662
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
mt_alloc_one lib/maple_tree.c:152 [inline]
mas_alloc_nodes+0x276/0x800 lib/maple_tree.c:1277
mas_node_count_gfp lib/maple_tree.c:1359 [inline]
mas_preallocate+0x12d/0x350 lib/maple_tree.c:5804
do_mas_align_munmap+0x2c4/0x15f0 mm/mmap.c:2443
do_mas_munmap+0x246/0x2b0 mm/mmap.c:2640
mmap_region+0x8e6/0x1fa0 mm/mmap.c:2688
do_mmap+0x8c5/0xf60 mm/mmap.c:1425
vm_mmap_pgoff+0x1ca/0x2d0 mm/util.c:520
Memory state around the buggy address:
ffff88805ecb4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88805ecb4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88805ecb4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88805ecb4800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88805ecb4880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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