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BUG: KASAN: use-after-free in jfs_lazycommit+0x658/0xa40 fs/jfs/jfs_txnmgr.c:2764
Read of size 4 at addr ffff0000c0b2aa94 by task jfsCommit/238

CPU: 1 PID: 238 Comm: jfsCommit Not tainted 5.15.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_load4_noabort+0x44/0x50 mm/kasan/report_generic.c:308
 jfs_lazycommit+0x658/0xa40 fs/jfs/jfs_txnmgr.c:2764
 kthread+0x37c/0x45c kernel/kthread.c:319
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

Allocated by task 11271:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 kmem_cache_alloc_trace+0x27c/0x47c mm/slub.c:3247
 kmalloc include/linux/slab.h:591 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 jfs_fill_super+0x108/0xa08 fs/jfs/super.c:500
 mount_bdev+0x26c/0x368 fs/super.c:1378
 jfs_do_mount+0x44/0x58 fs/jfs/super.c:675
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610
 vfs_get_tree+0x90/0x274 fs/super.c:1508
 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994
 path_mount+0x590/0x104c fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount fs/namespace.c:3522 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Freed by task 3988:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4c/0x84 mm/kasan/common.c:46
 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360
 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0x178/0x410 mm/slub.c:4559
 jfs_put_super+0x144/0x188 fs/jfs/super.c:203
 generic_shutdown_super+0x130/0x29c fs/super.c:475
 kill_block_super+0x70/0xdc fs/super.c:1405
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Last potentially related work creation:
 kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
 insert_work+0x64/0x394 kernel/workqueue.c:1362
 __queue_work+0xb84/0x114c kernel/workqueue.c:1528
 queue_work_on+0xc4/0x17c kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:501 [inline]
 loop_queue_work drivers/block/loop.c:1067 [inline]
 loop_queue_rq+0x9a8/0xb20 drivers/block/loop.c:2201
 __blk_mq_issue_directly block/blk-mq.c:1992 [inline]
 __blk_mq_try_issue_directly+0x40c/0x6a0 block/blk-mq.c:2048
 blk_mq_try_issue_directly+0x108/0x334 block/blk-mq.c:2079
 blk_mq_submit_bio+0xf40/0x1ae0
 __submit_bio+0x628/0x664 block/blk-core.c:923
 __submit_bio_noacct_mq block/blk-core.c:1003 [inline]
 submit_bio_noacct+0x680/0x7dc block/blk-core.c:1033
 submit_bio+0x394/0x68c block/blk-core.c:1095
 submit_bio_wait+0x108/0x210 block/bio.c:1229
 hfsplus_submit_bio+0x334/0x3e8 fs/hfsplus/wrapper.c:89
 hfsplus_sync_fs+0x43c/0x6e0 fs/hfsplus/super.c:222
 hfsplus_put_super+0x114/0x2ec fs/hfsplus/super.c:295
 generic_shutdown_super+0x130/0x29c fs/super.c:475
 kill_block_super+0x70/0xdc fs/super.c:1405
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Second to last potentially related work creation:
 kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
 insert_work+0x64/0x394 kernel/workqueue.c:1362
 __queue_work+0xb84/0x114c kernel/workqueue.c:1528
 queue_work_on+0xc4/0x17c kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:501 [inline]
 loop_queue_work drivers/block/loop.c:1067 [inline]
 loop_queue_rq+0x9a8/0xb20 drivers/block/loop.c:2201
 __blk_mq_issue_directly block/blk-mq.c:1992 [inline]
 __blk_mq_try_issue_directly+0x40c/0x6a0 block/blk-mq.c:2048
 blk_mq_try_issue_directly+0x108/0x334 block/blk-mq.c:2079
 blk_mq_submit_bio+0xf40/0x1ae0
 __submit_bio+0x628/0x664 block/blk-core.c:923
 __submit_bio_noacct_mq block/blk-core.c:1003 [inline]
 submit_bio_noacct+0x680/0x7dc block/blk-core.c:1033
 submit_bio+0x394/0x68c block/blk-core.c:1095
 submit_bio_wait+0x108/0x210 block/bio.c:1229
 hfsplus_submit_bio+0x334/0x3e8 fs/hfsplus/wrapper.c:89
 hfsplus_sync_fs+0x43c/0x6e0 fs/hfsplus/super.c:222
 sync_filesystem+0x1a0/0x218 fs/sync.c:66
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1405
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000c0b2aa00
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 148 bytes inside of
 256-byte region [ffff0000c0b2aa00, ffff0000c0b2ab00)
The buggy address belongs to the page:
page:000000006641e606 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100b2a
head:000000006641e606 order:1 compound_mapcount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 fffffc000337f900 0000000200000002 ffff0000c0002480
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000c0b2a980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000c0b2aa00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000c0b2aa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff0000c0b2ab00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000c0b2ab80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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