==================================================================
BUG: KASAN: use-after-free in __mutex_waiter_is_first kernel/locking/mutex.c:191 [inline]
BUG: KASAN: use-after-free in __mutex_lock_common+0xbb4/0x2154 kernel/locking/mutex.c:671
Read of size 8 at addr ffff0000d5ce7908 by task jfsCommit/233
CPU: 0 PID: 233 Comm: jfsCommit Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309
__mutex_waiter_is_first kernel/locking/mutex.c:191 [inline]
__mutex_lock_common+0xbb4/0x2154 kernel/locking/mutex.c:671
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
jfs_syncpt+0x30/0x98 fs/jfs/jfs_logmgr.c:1047
txEnd+0x2e0/0x574 fs/jfs/jfs_txnmgr.c:549
txLazyCommit fs/jfs/jfs_txnmgr.c:2718 [inline]
jfs_lazycommit+0x4d4/0xa40 fs/jfs/jfs_txnmgr.c:2766
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Allocated by task 4067:
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]
open_inline_log fs/jfs/jfs_logmgr.c:1167 [inline]
lmLogOpen+0x290/0xdc0 fs/jfs/jfs_logmgr.c:1077
jfs_mount_rw+0xe4/0x57c fs/jfs/jfs_mount.c:253
jfs_fill_super+0x508/0xa08 fs/jfs/super.c:570
mount_bdev+0x274/0x370 fs/super.c:1387
jfs_do_mount+0x44/0x58 fs/jfs/super.c:675
legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
vfs_get_tree+0x90/0x274 fs/super.c:1517
do_new_mount+0x278/0x8fc fs/namespace.c:3005
path_mount+0x594/0x101c fs/namespace.c:3335
do_mount fs/namespace.c:3348 [inline]
__do_sys_mount fs/namespace.c:3556 [inline]
__se_sys_mount fs/namespace.c:3533 [inline]
__arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3533
__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:608
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Freed by task 3997:
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
lmLogClose+0x270/0x4d8
jfs_umount+0x24c/0x338 fs/jfs/jfs_umount.c:116
jfs_put_super+0x90/0x188 fs/jfs/super.c:194
generic_shutdown_super+0x130/0x29c fs/super.c:475
kill_block_super+0x70/0xdc fs/super.c:1414
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:609
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
The buggy address belongs to the object at ffff0000d5ce7800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 264 bytes inside of
1024-byte region [ffff0000d5ce7800, ffff0000d5ce7c00)
The buggy address belongs to the page:
page:000000003c259fd4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x115ce0
head:000000003c259fd4 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffe00000010200(slab|head|node=0|zone=2|lastcpupid=0xfff)
raw: 05ffe00000010200 fffffc0003297600 0000000400000004 ffff0000c0002780
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000d5ce7800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000d5ce7880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d5ce7900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000d5ce7980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000d5ce7a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Unable to handle kernel paging request at virtual address dfff800000000006
Mem abort info:
ESR = 0x0000000096000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x06: level 2 translation fault
Data abort info:
ISV = 0, ISS = 0x00000006
CM = 0, WnR = 0
[dfff800000000006] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 233 Comm: jfsCommit Tainted: G B 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 00401005 (nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
pc : lmLogSync+0xec/0x98c fs/jfs/jfs_logmgr.c:943
lr : write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
lr : lmLogSync+0xe0/0x98c fs/jfs/jfs_logmgr.c:943
sp : ffff80001af67b00
x29: ffff80001af67bc0 x28: ffff80001c001000 x27: dfff800000000000
x26: ffff0000d5ce7800 x25: ffff80001af67b20 x24: 1ffff000029d2880
x23: 0000000000000002 x22: 0000000000000006 x21: 0000000000000030
x20: ffff0000c7c43c98 x19: ffff0000d5ce7800 x18: 1fffe0003690198e
x17: 1fffe0003690198e x16: ffff80001199581c x15: ffff8000149dec20
x14: ffff0001b480cc80 x13: ffff0001b480cc7c x12: ffff7000035ecf6c
x11: 0000000000000000 x10: ffff0000c6900000 x9 : ffff80001849f3d0
x8 : 0000000000000006 x7 : 0000000000000000 x6 : ffff800008269a3c
x5 : 0000000000000000 x4 : 0000000000000004 x3 : ffff8000098e5044
x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000000
Call trace:
write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
lmLogSync+0xec/0x98c fs/jfs/jfs_logmgr.c:943
jfs_syncpt+0x74/0x98 fs/jfs/jfs_logmgr.c:1049
txEnd+0x2e0/0x574 fs/jfs/jfs_txnmgr.c:549
txLazyCommit fs/jfs/jfs_txnmgr.c:2718 [inline]
jfs_lazycommit+0x4d4/0xa40 fs/jfs/jfs_txnmgr.c:2766
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Code: 97bfa1e8 f94002a8 9100c115 d343fea8 (387b6908)
---[ end trace 9dceb70682dbc7b1 ]---
----------------
Code disassembly (best guess):
0: 97bfa1e8 bl 0xfffffffffefe87a0
4: f94002a8 ldr x8, [x21]
8: 9100c115 add x21, x8, #0x30
c: d343fea8 lsr x8, x21, #3
* 10: 387b6908 ldrb w8, [x8, x27] <-- trapping instruction