REISERFS (device loop3): found reiserfs format "3.5" with non-standard journal
REISERFS (device loop3): using ordered data mode
reiserfs: using flush barriers
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BUG: KASAN: use-after-free in __lock_acquire+0x3829/0x5020 kernel/locking/lockdep.c:3314
Read of size 8 at addr ffff88017fd777f8 by task syz-executor3/3131

CPU: 0 PID: 3131 Comm: syz-executor3 Not tainted 4.18.0-rc7+ #176
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 __lock_acquire+0x3829/0x5020 kernel/locking/lockdep.c:3314
 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924
 __mutex_lock_common kernel/locking/mutex.c:757 [inline]
 __mutex_lock+0x176/0x1820 kernel/locking/mutex.c:894
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909
 blkdev_get+0x5f2/0xb50 fs/block_dev.c:1621
 blkdev_get_by_dev+0x3f/0x80 fs/block_dev.c:1737
 journal_init_dev fs/reiserfs/journal.c:2628 [inline]
 journal_init+0xcad/0x6a20 fs/reiserfs/journal.c:2775
 reiserfs_fill_super+0xd74/0x3930 fs/reiserfs/super.c:2034
 mount_bdev+0x30c/0x3e0 fs/super.c:1174
 get_super_block+0x34/0x40 fs/reiserfs/super.c:2605
 mount_fs+0xae/0x328 fs/super.c:1277
 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1037
 vfs_kern_mount fs/namespace.c:1027 [inline]
 do_new_mount fs/namespace.c:2518 [inline]
 do_mount+0x581/0x30e0 fs/namespace.c:2848
 ksys_mount+0x12d/0x140 fs/namespace.c:3064
 __do_sys_mount fs/namespace.c:3078 [inline]
 __se_sys_mount fs/namespace.c:3075 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45955a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 bd 8a fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 9a 8a fb ff c3 66 0f 1f 84 00 00 00 00 00 
RSP: 002b:00007ff71ca20a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff71ca20b30 RCX: 000000000045955a
RDX: 00007ff71ca20ad0 RSI: 0000000020000040 RDI: 00007ff71ca20af0
RBP: 0000000020000040 R08: 00007ff71ca20b30 R09: 00007ff71ca20ad0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000013
R13: 0000000000000000 R14: 00000000004c9463 R15: 0000000000000000

Allocated by task 3131:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3554
 bdev_alloc_inode+0x1b/0x40 fs/block_dev.c:728
 alloc_inode+0x63/0x190 fs/inode.c:210
 new_inode_pseudo+0x71/0x1a0 fs/inode.c:895
 new_inode+0x1c/0x40 fs/inode.c:924
 iget5_locked+0x126/0x190 fs/inode.c:1097
 bdget+0xb7/0x5d0 fs/block_dev.c:869
 blkdev_get_by_dev+0x24/0x80 fs/block_dev.c:1733
 journal_init_dev fs/reiserfs/journal.c:2628 [inline]
 journal_init+0xcad/0x6a20 fs/reiserfs/journal.c:2775
 reiserfs_fill_super+0xd74/0x3930 fs/reiserfs/super.c:2034
 mount_bdev+0x30c/0x3e0 fs/super.c:1174
 get_super_block+0x34/0x40 fs/reiserfs/super.c:2605
 mount_fs+0xae/0x328 fs/super.c:1277
 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1037
 vfs_kern_mount fs/namespace.c:1027 [inline]
 do_new_mount fs/namespace.c:2518 [inline]
 do_mount+0x581/0x30e0 fs/namespace.c:2848
 ksys_mount+0x12d/0x140 fs/namespace.c:3064
 __do_sys_mount fs/namespace.c:3078 [inline]
 __se_sys_mount fs/namespace.c:3075 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 4397:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3498 [inline]
 kmem_cache_free+0x86/0x2d0 mm/slab.c:3756
 bdev_i_callback+0x20/0x30 fs/block_dev.c:739
 __rcu_reclaim kernel/rcu/rcu.h:178 [inline]
 rcu_do_batch kernel/rcu/tree.c:2558 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2818 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2785 [inline]
 rcu_process_callbacks+0xed5/0x1850 kernel/rcu/tree.c:2802
 __do_softirq+0x2e8/0xb17 kernel/softirq.c:292

The buggy address belongs to the object at ffff88017fd77780
 which belongs to the cache bdev_cache of size 1352
The buggy address is located 120 bytes inside of
 1352-byte region [ffff88017fd77780, ffff88017fd77cc8)
The buggy address belongs to the page:
page:ffffea0005ff5dc0 count:1 mapcount:0 mapping:ffff8801dad854c0 index:0xffff88017fd77ffe
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea0005ff2e88 ffffea0006a56dc8 ffff8801dad854c0
raw: ffff88017fd77ffe ffff88017fd77180 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88017fd77680: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
 ffff88017fd77700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88017fd77780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff88017fd77800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88017fd77880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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