00000000: 58 41 47 49 00 00 00 01 00 00 00 00 00 00 20 00 XAGI.......... .
00000010: 00 00 00 40 00 00 00 03 00 00 00 01 00 00 00 37 ...@...........7
00000020: 00 00 18 00 ff ff ff ff ff ff ff ff ff ff ff ff ................
00000030: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
00000040: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
00000050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
00000060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
00000070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
XFS (loop0): Corruption of in-memory data (0x8) detected at xfs_buf_submit+0x352/0xc70 fs/xfs/xfs_buf.c:1460 (fs/xfs/xfs_buf.c:1460). Shutting down filesystem.
XFS (loop0): Please unmount the filesystem and rectify the problem(s)
loop0: lost filesystem error report for type 5 error -108
XFS (loop0): log mount/recovery failed: error -117
XFS (loop0): log mount failed
loop0: detected capacity change from 0 to 32768
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
loop0: detected capacity change from 32768 to 64
syz.0.0: attempt to access beyond end of device
loop0: rw=1, sector=2972, nr_sectors = 146 limit=64
gfs2: fsid=syz:syz.0: Error -5 writing to journal, jid=0
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
gfs2_withdraw+0xc3/0x1b0 fs/gfs2/util.c:250
gfs2_end_log_write+0xcd/0x7c0 fs/gfs2/lops.c:212
gfs2_log_submit_write+0x7e/0xb0 fs/gfs2/lops.c:245
gfs2_log_flush+0xb30/0x2510 fs/gfs2/log.c:1100
gfs2_kill_sb+0x5c/0x430 fs/gfs2/ops_fstype.c:1779
deactivate_locked_super+0xbc/0x130 fs/super.c:476
cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feabe79c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feabf5f3fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007feabea15fa0 RCX: 00007feabe79c799
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000006
RBP: 00007feabe832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feabea16038 R14: 00007feabea15fa0 R15: 00007fffd847d118
gfs2: fsid=syz:syz.0: about to withdraw this file system
==================================================================
BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:381 [inline]
BUG: KASAN: slab-use-after-free in gfs2_discard fs/gfs2/aops.c:589 [inline]
BUG: KASAN: slab-use-after-free in gfs2_invalidate_folio+0x40b/0x750 fs/gfs2/aops.c:627
Read of size 8 at addr ffff8880441d9788 by task syz.0.0/5323
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xba/0x230 mm/kasan/report.c:482
kasan_report+0x117/0x150 mm/kasan/report.c:595
list_empty include/linux/list.h:381 [inline]
gfs2_discard fs/gfs2/aops.c:589 [inline]
gfs2_invalidate_folio+0x40b/0x750 fs/gfs2/aops.c:627
folio_invalidate mm/truncate.c:140 [inline]
truncate_cleanup_folio+0xcb/0x190 mm/truncate.c:160
truncate_inode_pages_range+0x2ce/0xe30 mm/truncate.c:404
gfs2_evict_inode+0x324/0x1050 fs/gfs2/super.c:1428
evict+0x61e/0xb10 fs/inode.c:846
gfs2_evict_inodes fs/gfs2/ops_fstype.c:1760 [inline]
gfs2_kill_sb+0x2bb/0x430 fs/gfs2/ops_fstype.c:1786
deactivate_locked_super+0xbc/0x130 fs/super.c:476
cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feabe79c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feabf5f3fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007feabea15fa0 RCX: 00007feabe79c799
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000006
RBP: 00007feabe832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feabea16038 R14: 00007feabea15fa0 R15: 00007fffd847d118
Allocated by task 5323:
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
unpoison_slab_object mm/kasan/common.c:340 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4538 [inline]
slab_alloc_node mm/slub.c:4866 [inline]
kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4873
gfs2_alloc_bufdata fs/gfs2/trans.c:173 [inline]
gfs2_trans_add_data+0x1ff/0x620 fs/gfs2/trans.c:214
gfs2_trans_add_databufs+0x12f/0x1a0 fs/gfs2/trans.c:251
gfs2_iomap_put_folio+0x222/0x480 fs/gfs2/bmap.c:995
__iomap_put_folio fs/iomap/buffered-io.c:901 [inline]
iomap_write_iter fs/iomap/buffered-io.c:1169 [inline]
iomap_file_buffered_write+0x610/0xb30 fs/iomap/buffered-io.c:1220
gfs2_file_buffered_write+0x4eb/0x870 fs/gfs2/file.c:1061
gfs2_file_write_iter+0x976/0x1130 fs/gfs2/file.c:1166
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 5323:
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2685 [inline]
slab_free mm/slub.c:6165 [inline]
kmem_cache_free+0x187/0x630 mm/slub.c:6295
trans_drain fs/gfs2/log.c:1016 [inline]
gfs2_log_flush+0x17ee/0x2510 fs/gfs2/log.c:1154
gfs2_kill_sb+0x5c/0x430 fs/gfs2/ops_fstype.c:1779
deactivate_locked_super+0xbc/0x130 fs/super.c:476
cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8880441d9770
which belongs to the cache gfs2_bufdata of size 80
The buggy address is located 24 bytes inside of
freed 80-byte region [ffff8880441d9770, ffff8880441d97c0)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880441d9a80 pfn:0x441d9
flags: 0x4fff00000000200(workingset|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000200 ffff88803175e8c0 ffff888031725d08 ffffea0001059b10
raw: ffff8880441d9a80 0000000800240018 00000000f5000000 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 0xd2c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5323, tgid 5322 (syz.0.0), ts 108223498231, free_ts 108101414912
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
alloc_slab_page mm/slub.c:3292 [inline]
allocate_slab+0x77/0x660 mm/slub.c:3481
new_slab mm/slub.c:3539 [inline]
refill_objects+0x331/0x3c0 mm/slub.c:7175
refill_sheaf mm/slub.c:2812 [inline]
alloc_full_sheaf mm/slub.c:2834 [inline]
__pcs_replace_empty_main+0x40a/0x730 mm/slub.c:4626
alloc_from_pcs mm/slub.c:4717 [inline]
slab_alloc_node mm/slub.c:4851 [inline]
kmem_cache_alloc_noprof+0x37d/0x650 mm/slub.c:4873
gfs2_alloc_bufdata fs/gfs2/trans.c:173 [inline]
gfs2_trans_add_meta+0x2ce/0x960 fs/gfs2/trans.c:276
do_gfs2_set_flags fs/gfs2/file.c:265 [inline]
gfs2_fileattr_set+0x731/0x9f0 fs/gfs2/file.c:311
vfs_fileattr_set+0x9f6/0xc90 fs/file_attr.c:301
ioctl_setflags+0x189/0x1f0 fs/file_attr.c:337
do_vfs_ioctl+0x9f1/0x1530 fs/ioctl.c:560
__do_sys_ioctl fs/ioctl.c:595 [inline]
__se_sys_ioctl+0x82/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 1047 tgid 1047 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__slab_free+0x263/0x2b0 mm/slub.c:5573
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4538 [inline]
slab_alloc_node mm/slub.c:4866 [inline]
kmem_cache_alloc_node_noprof+0x384/0x690 mm/slub.c:4918
__alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702
alloc_skb include/linux/skbuff.h:1383 [inline]
mld_newpack+0x14c/0xc90 net/ipv6/mcast.c:1775
add_grhead+0x5a/0x2a0 net/ipv6/mcast.c:1886
add_grec+0x1452/0x1740 net/ipv6/mcast.c:2025
mld_send_initial_cr+0x288/0x550 net/ipv6/mcast.c:2268
ipv6_mc_dad_complete+0x88/0x540 net/ipv6/mcast.c:2279
addrconf_dad_completed+0x8a7/0xe60 net/ipv6/addrconf.c:4344
addrconf_dad_work+0xc5e/0x14c0 net/ipv6/addrconf.c:-1
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
Memory state around the buggy address:
ffff8880441d9680: fc fc fa fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff8880441d9700: fa fb fb fb fb fb fb fb fb fb fc fc fc fc fa fb
>ffff8880441d9780: fb fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb
^
ffff8880441d9800: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb
ffff8880441d9880: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb
==================================================================