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KASAN: slab-use-after-free Read in xfs_buf_rele (4)

Status: upstream: reported C repro on 2025/09/02 11:40
Subsystems: xfs
[Documentation on labels]
Reported-by: syzbot+0391d34e801643e2809b@syzkaller.appspotmail.com
First crash: 89d, last: 1d23h
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_buf_rele (4) 2 (5) 2025/10/30 08:01
[syzbot] Monthly xfs report (Oct 2025) 0 (1) 2025/10/29 09:50
[syzbot] Monthly xfs report (Sep 2025) 0 (1) 2025/09/27 20:43
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: slab-use-after-free Read in xfs_buf_rele xfs 19 2 507d 534d 0/29 auto-obsoleted due to no activity on 2024/09/11 19:16
upstream KASAN: slab-use-after-free Read in xfs_buf_rele (2) xfs 19 1 338d 328d 0/29 auto-obsoleted due to no activity on 2025/03/09 11:53
upstream KASAN: slab-use-after-free Read in xfs_buf_rele (3) xfs 19 1 188d 184d 0/29 auto-obsoleted due to no activity on 2025/07/27 00:40
linux-4.14 KASAN: use-after-free Read in xfs_buf_rele xfs 19 C 1 975d 1044d 0/1 upstream: reported C repro on 2022/12/24 01:04
linux-4.19 KASAN: use-after-free Read in xfs_buf_rele 19 syz error 3 972d 1053d 0/1 upstream: reported syz repro on 2022/12/14 21:15
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2025/10/30 08:01 27m hch@infradead.org git://git.infradead.org/users/hch/misc.git xfs-buf-hash report log
2025/10/30 07:11 2m hch@infradead.org git://git.infradead.org/users/hch/xfs.git xfs-buf-hash error

Sample crash report:
==================================================================
BUG: KASAN: slab-use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]
BUG: KASAN: slab-use-after-free in rht_head_hashfn include/linux/rhashtable.h:174 [inline]
BUG: KASAN: slab-use-after-free in __rhashtable_remove_fast_one include/linux/rhashtable.h:1007 [inline]
BUG: KASAN: slab-use-after-free in __rhashtable_remove_fast include/linux/rhashtable.h:1093 [inline]
BUG: KASAN: slab-use-after-free in rhashtable_remove_fast include/linux/rhashtable.h:1122 [inline]
BUG: KASAN: slab-use-after-free in xfs_buf_rele_cached fs/xfs/xfs_buf.c:926 [inline]
BUG: KASAN: slab-use-after-free in xfs_buf_rele+0x79c/0xcfc fs/xfs/xfs_buf.c:951
Read of size 4 at addr ffff0000ce9fe008 by task syz.2.1678/16850

CPU: 0 UID: 0 PID: 16850 Comm: syz.2.1678 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0xb0/0x110 mm/kasan/report.c:595
 __asan_report_load4_noabort+0x20/0x2c mm/kasan/report_generic.c:380
 rht_key_hashfn include/linux/rhashtable.h:159 [inline]
 rht_head_hashfn include/linux/rhashtable.h:174 [inline]
 __rhashtable_remove_fast_one include/linux/rhashtable.h:1007 [inline]
 __rhashtable_remove_fast include/linux/rhashtable.h:1093 [inline]
 rhashtable_remove_fast include/linux/rhashtable.h:1122 [inline]
 xfs_buf_rele_cached fs/xfs/xfs_buf.c:926 [inline]
 xfs_buf_rele+0x79c/0xcfc fs/xfs/xfs_buf.c:951
 xfs_buftarg_shrink_scan+0x1d8/0x270 fs/xfs/xfs_buf.c:1653
 do_shrink_slab+0x650/0x11b0 mm/shrinker.c:437
 shrink_slab+0xc68/0xfb8 mm/shrinker.c:664
 drop_slab_node mm/vmscan.c:441 [inline]
 drop_slab+0x120/0x248 mm/vmscan.c:459
 drop_caches_sysctl_handler+0x170/0x300 fs/drop_caches.c:68
 proc_sys_call_handler+0x460/0x7e8 fs/proc/proc_sysctl.c:600
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:626
 do_iter_readv_writev+0x4c0/0x724 fs/read_write.c:-1
 vfs_writev+0x29c/0x7cc fs/read_write.c:1057
 do_writev+0x128/0x290 fs/read_write.c:1103
 __do_sys_writev fs/read_write.c:1171 [inline]
 __se_sys_writev fs/read_write.c:1168 [inline]
 __arm64_sys_writev+0x80/0x94 fs/read_write.c:1168
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Allocated by task 16829:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:562
 poison_kmalloc_redzone mm/kasan/common.c:388 [inline]
 __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:405
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4365 [inline]
 __kvmalloc_node_noprof+0x38c/0x638 mm/slub.c:5052
 bucket_table_alloc lib/rhashtable.c:186 [inline]
 rhashtable_init_noprof+0x3b4/0xa10 lib/rhashtable.c:1075
 xfs_buf_cache_init+0x28/0x38 fs/xfs/xfs_buf.c:375
 xfs_perag_alloc fs/xfs/libxfs/xfs_ag.c:238 [inline]
 xfs_initialize_perag+0x208/0x5ac fs/xfs/libxfs/xfs_ag.c:279
 xfs_mountfs+0x81c/0x1c04 fs/xfs/xfs_mount.c:976
 xfs_fs_fill_super+0xe74/0x11f0 fs/xfs/xfs_super.c:1965
 get_tree_bdev_flags+0x360/0x414 fs/super.c:1692
 get_tree_bdev+0x2c/0x3c fs/super.c:1715
 xfs_fs_get_tree+0x28/0x38 fs/xfs/xfs_super.c:2012
 vfs_get_tree+0x90/0x28c fs/super.c:1815
 do_new_mount+0x278/0x7f4 fs/namespace.c:3805
 path_mount+0x5b4/0xde0 fs/namespace.c:4120
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount fs/namespace.c:4321 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4321
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Freed by task 6692:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:243 [inline]
 __kasan_slab_free+0x74/0x98 mm/kasan/common.c:275
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2417 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x17c/0x474 mm/slub.c:4879
 kvfree+0x30/0x40 mm/slub.c:5095
 bucket_table_free+0xec/0x1a4 lib/rhashtable.c:114
 rhashtable_free_and_destroy+0x70c/0x87c lib/rhashtable.c:1173
 rhashtable_destroy+0x28/0x38 lib/rhashtable.c:1184
 xfs_buf_cache_destroy+0x20/0x30 fs/xfs/xfs_buf.c:382
 xfs_perag_uninit+0x28/0x38 fs/xfs/libxfs/xfs_ag.c:116
 xfs_group_free+0x144/0x32c fs/xfs/libxfs/xfs_group.c:171
 xfs_free_perag_range+0x58/0x8c fs/xfs/libxfs/xfs_ag.c:133
 xfs_unmountfs+0x29c/0x310 fs/xfs/xfs_mount.c:1354
 xfs_fs_put_super+0x6c/0x144 fs/xfs/xfs_super.c:1247
 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1766
 xfs_kill_sb+0x20/0x58 fs/xfs/xfs_super.c:2317
 deactivate_locked_super+0xc4/0x12c fs/super.c:474
 deactivate_super+0xe0/0x100 fs/super.c:507
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1378
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1385
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

The buggy address belongs to the object at ffff0000ce9fe000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff0000ce9fe000, ffff0000ce9fe200)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10e9fc
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c0001c80 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 05ffc00000000040 ffff0000c0001c80 0000000000000000 dead000000000001
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 05ffc00000000002 fffffdffc33a7f01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000ce9fdf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000ce9fdf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000ce9fe000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff0000ce9fe080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000ce9fe100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in lib/rhashtable.c:1192:34
shift exponent 4294901760 is too large for 32-bit type 'int'
CPU: 0 UID: 0 PID: 16850 Comm: syz.2.1678 Tainted: G    B               6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:233
 __ubsan_handle_shift_out_of_bounds+0x2b0/0x34c lib/ubsan.c:494
 __rht_bucket_nested+0x460/0x594 lib/rhashtable.c:1192
 rht_bucket_var include/linux/rhashtable.h:296 [inline]
 __rhashtable_remove_fast_one include/linux/rhashtable.h:1008 [inline]
 __rhashtable_remove_fast include/linux/rhashtable.h:1093 [inline]
 rhashtable_remove_fast include/linux/rhashtable.h:1122 [inline]
 xfs_buf_rele_cached fs/xfs/xfs_buf.c:926 [inline]
 xfs_buf_rele+0x690/0xcfc fs/xfs/xfs_buf.c:951
 xfs_buftarg_shrink_scan+0x1d8/0x270 fs/xfs/xfs_buf.c:1653
 do_shrink_slab+0x650/0x11b0 mm/shrinker.c:437
 shrink_slab+0xc68/0xfb8 mm/shrinker.c:664
 drop_slab_node mm/vmscan.c:441 [inline]
 drop_slab+0x120/0x248 mm/vmscan.c:459
 drop_caches_sysctl_handler+0x170/0x300 fs/drop_caches.c:68
 proc_sys_call_handler+0x460/0x7e8 fs/proc/proc_sysctl.c:600
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:626
 do_iter_readv_writev+0x4c0/0x724 fs/read_write.c:-1
 vfs_writev+0x29c/0x7cc fs/read_write.c:1057
 do_writev+0x128/0x290 fs/read_write.c:1103
 __do_sys_writev fs/read_write.c:1171 [inline]
 __se_sys_writev fs/read_write.c:1168 [inline]
 __arm64_sys_writev+0x80/0x94 fs/read_write.c:1168
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
---[ end trace ]---
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in lib/rhashtable.c:1193:32
shift exponent 4294901760 is too large for 32-bit type 'unsigned int'
CPU: 0 UID: 0 PID: 16850 Comm: syz.2.1678 Tainted: G    B               6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:233
 __ubsan_handle_shift_out_of_bounds+0x2b0/0x34c lib/ubsan.c:494
 __rht_bucket_nested+0x4a8/0x594 lib/rhashtable.c:1193
 rht_bucket_var include/linux/rhashtable.h:296 [inline]
 __rhashtable_remove_fast_one include/linux/rhashtable.h:1008 [inline]
 __rhashtable_remove_fast include/linux/rhashtable.h:1093 [inline]
 rhashtable_remove_fast include/linux/rhashtable.h:1122 [inline]
 xfs_buf_rele_cached fs/xfs/xfs_buf.c:926 [inline]
 xfs_buf_rele+0x690/0xcfc fs/xfs/xfs_buf.c:951
 xfs_buftarg_shrink_scan+0x1d8/0x270 fs/xfs/xfs_buf.c:1653
 do_shrink_slab+0x650/0x11b0 mm/shrinker.c:437
 shrink_slab+0xc68/0xfb8 mm/shrinker.c:664
 drop_slab_node mm/vmscan.c:441 [inline]
 drop_slab+0x120/0x248 mm/vmscan.c:459
 drop_caches_sysctl_handler+0x170/0x300 fs/drop_caches.c:68
 proc_sys_call_handler+0x460/0x7e8 fs/proc/proc_sysctl.c:600
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:626
 do_iter_readv_writev+0x4c0/0x724 fs/read_write.c:-1
 vfs_writev+0x29c/0x7cc fs/read_write.c:1057
 do_writev+0x128/0x290 fs/read_write.c:1103
 __do_sys_writev fs/read_write.c:1171 [inline]
 __se_sys_writev fs/read_write.c:1168 [inline]
 __arm64_sys_writev+0x80/0x94 fs/read_write.c:1168
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
---[ end trace ]---
Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 16850 Comm: syz.2.1678 Tainted: G    B               6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __rht_bucket_nested+0xbc/0x594 lib/rhashtable.c:1198
lr : nested_table_top lib/rhashtable.c:72 [inline]
lr : __rht_bucket_nested+0xb0/0x594 lib/rhashtable.c:1197
sp : ffff8000a23a7300
x29: ffff8000a23a7310 x28: 0000000000000010 x27: 00000000c6aa9140
x26: dfff800000000000 x25: 0000000000000000 x24: 00000000c6aa9140
x23: ffff0000ce9fe080 x22: 00000000c4881028 x21: 00000000ffff0000
x20: ffff0000ce9fe000 x19: ffff0000ce9fe004 x18: 0000000000000000
x17: 64656e6769736e75 x16: ffff80008b007230 x15: ffff70001260d84c
x14: 1ffff0001260d84c x13: 0000000000000004 x12: ffffffffffffffff
x11: ffff70001260d84c x10: 0000000000ff0100 x9 : ffff8000975a4860
x8 : 0000000000000000 x7 : fffffffffffed948 x6 : ffff800080563af4
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000830c1284
x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000000
Call trace:
 __rht_bucket_nested+0xbc/0x594 lib/rhashtable.c:1198 (P)
 rht_bucket_var include/linux/rhashtable.h:296 [inline]
 __rhashtable_remove_fast_one include/linux/rhashtable.h:1008 [inline]
 __rhashtable_remove_fast include/linux/rhashtable.h:1093 [inline]
 rhashtable_remove_fast include/linux/rhashtable.h:1122 [inline]
 xfs_buf_rele_cached fs/xfs/xfs_buf.c:926 [inline]
 xfs_buf_rele+0x690/0xcfc fs/xfs/xfs_buf.c:951
 xfs_buftarg_shrink_scan+0x1d8/0x270 fs/xfs/xfs_buf.c:1653
 do_shrink_slab+0x650/0x11b0 mm/shrinker.c:437
 shrink_slab+0xc68/0xfb8 mm/shrinker.c:664
 drop_slab_node mm/vmscan.c:441 [inline]
 drop_slab+0x120/0x248 mm/vmscan.c:459
 drop_caches_sysctl_handler+0x170/0x300 fs/drop_caches.c:68
 proc_sys_call_handler+0x460/0x7e8 fs/proc/proc_sysctl.c:600
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:626
 do_iter_readv_writev+0x4c0/0x724 fs/read_write.c:-1
 vfs_writev+0x29c/0x7cc fs/read_write.c:1057
 do_writev+0x128/0x290 fs/read_write.c:1103
 __do_sys_writev fs/read_write.c:1171 [inline]
 __se_sys_writev fs/read_write.c:1168 [inline]
 __arm64_sys_writev+0x80/0x94 fs/read_write.c:1168
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: 976eb328 f94002e8 8b190d19 d343ff28 (387a6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	976eb328 	bl	0xfffffffffdbacca0
   4:	f94002e8 	ldr	x8, [x23]
   8:	8b190d19 	add	x25, x8, x25, lsl #3
   c:	d343ff28 	lsr	x8, x25, #3
* 10:	387a6908 	ldrb	w8, [x8, x26] <-- trapping instruction

Crashes (20):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/02 11:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 807a3b61 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/31 19:57 upstream 58fdd8484c05 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/31 18:10 upstream 58fdd8484c05 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/10 05:26 upstream 5472d60c129f ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/05 05:57 upstream d104e3d17f7b 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/01 06:13 upstream 50c19e20ed2e 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/09/21 21:33 upstream 2d5bd41a4505 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/09/17 01:03 upstream 5aca7966d2a7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/09/17 00:23 upstream 5aca7966d2a7 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/09/14 09:11 upstream f83a4f2a4d8c e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/09/09 21:33 upstream 9dd1835ecda5 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/08/25 19:22 upstream b6add54ba618 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-use-after-free Read in xfs_buf_rele
2025/08/18 07:23 upstream 8d561baae505 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root KASAN: slab-use-after-free Read in xfs_buf_rele
2025/08/05 07:12 upstream 35a813e010b9 f5bcc8dc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/29 18:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b98c94eed4a9 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/16 05:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/13 07:14 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
2025/10/10 11:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
2025/09/13 14:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8736259279a3 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
2025/08/20 22:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bd178e57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in xfs_buf_rele
* Struck through repros no longer work on HEAD.