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BUG: KASAN: slab-use-after-free in instrument_atomic_write include/linux/instrumented.h:82 [inline]
BUG: KASAN: slab-use-after-free in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
BUG: KASAN: slab-use-after-free in txEnd+0x328/0x558 fs/jfs/jfs_txnmgr.c:554
Write of size 8 at addr ffff0000f051b840 by task jfsCommit/101
CPU: 1 UID: 0 PID: 101 Comm: jfsCommit Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0x198/0x550 mm/kasan/report.c:521
kasan_report+0xd8/0x138 mm/kasan/report.c:634
kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189
__kasan_check_write+0x20/0x30 mm/kasan/shadow.c:37
instrument_atomic_write include/linux/instrumented.h:82 [inline]
clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
txEnd+0x328/0x558 fs/jfs/jfs_txnmgr.c:554
txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline]
jfs_lazycommit+0x4e0/0x9a8 fs/jfs/jfs_txnmgr.c:2733
kthread+0x65c/0x7b0 kernel/kthread.c:464
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
Allocated by task 6932:
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:562
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x2cc/0x428 mm/slub.c:4325
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
open_inline_log fs/jfs/jfs_logmgr.c:1159 [inline]
lmLogOpen+0x294/0xdb4 fs/jfs/jfs_logmgr.c:1069
jfs_mount_rw+0xe4/0x5b8 fs/jfs/jfs_mount.c:257
jfs_fill_super+0x5f4/0xba0 fs/jfs/super.c:532
get_tree_bdev_flags+0x38c/0x494 fs/super.c:1636
get_tree_bdev+0x2c/0x3c fs/super.c:1659
jfs_get_tree+0x28/0x38 fs/jfs/super.c:635
vfs_get_tree+0x90/0x28c fs/super.c:1814
do_new_mount+0x278/0x900 fs/namespace.c:3560
path_mount+0x590/0xe04 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount fs/namespace.c:4088 [inline]
__arm64_sys_mount+0x4f4/0x5d0 fs/namespace.c:4088
__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+0x54/0x168 arch/arm64/kernel/entry-common.c:744
el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Freed by task 6445:
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:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x64/0x8c mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2353 [inline]
slab_free mm/slub.c:4609 [inline]
kfree+0x180/0x478 mm/slub.c:4757
lmLogClose+0x270/0x4d4
jfs_umount+0x274/0x360 fs/jfs/jfs_umount.c:114
jfs_put_super+0x90/0x188 fs/jfs/super.c:194
generic_shutdown_super+0x12c/0x2bc fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1710
deactivate_locked_super+0xc4/0x12c fs/super.c:473
deactivate_super+0xe0/0x100 fs/super.c:506
cleanup_mnt+0x34c/0x3dc fs/namespace.c:1413
__cleanup_mnt+0x20/0x30 fs/namespace.c:1420
task_work_run+0x230/0x2e0 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
The buggy address belongs to the object at ffff0000f051b800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 64 bytes inside of
freed 1024-byte region [ffff0000f051b800, ffff0000f051bc00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x130518
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c0001dc0 fffffdffc3081e00 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 05ffc00000000040 ffff0000c0001dc0 fffffdffc3081e00 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 05ffc00000000003 fffffdffc3c14601 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000f051b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000f051b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000f051b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000f051b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000f051b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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