BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
==================================================================
BUG: KASAN: slab-out-of-bounds in strlen+0x54/0x70 lib/string.c:418
Read of size 1 at addr ffff0000d3abea28 by task syz-executor364/6099

CPU: 0 PID: 6099 Comm: syz-executor364 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:475
 kasan_report+0xd8/0x138 mm/kasan/report.c:588
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 strlen+0x54/0x70 lib/string.c:418
 getname_kernel+0x2c/0x2d8 fs/namei.c:226
 kern_path+0x2c/0x6c fs/namei.c:2609
 lookup_bdev block/bdev.c:979 [inline]
 bdev_open_by_path+0xcc/0x490 block/bdev.c:901
 btrfs_init_dev_replace_tgtdev fs/btrfs/dev-replace.c:260 [inline]
 btrfs_dev_replace_start fs/btrfs/dev-replace.c:638 [inline]
 btrfs_dev_replace_by_ioctl+0x2e4/0x19d4 fs/btrfs/dev-replace.c:747
 btrfs_ioctl_dev_replace+0x348/0x408 fs/btrfs/ioctl.c:3308
 btrfs_ioctl+0xa28/0xb08 fs/btrfs/ioctl.c:4692
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl fs/ioctl.c:857 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Allocated by task 6099:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x7c mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:198 [inline]
 __do_kmalloc_node mm/slab_common.c:1007 [inline]
 __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:1027
 memdup_user+0x4c/0x1f8 mm/util.c:197
 btrfs_ioctl_dev_replace+0xa4/0x408 fs/btrfs/ioctl.c:3295
 btrfs_ioctl+0xa28/0xb08 fs/btrfs/ioctl.c:4692
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl fs/ioctl.c:857 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

The buggy address belongs to the object at ffff0000d3abe000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 0 bytes to the right of
 allocated 2600-byte region [ffff0000d3abe000, ffff0000d3abea28)

The buggy address belongs to the physical page:
page:00000000c3060e78 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113ab8
head:00000000c3060e78 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000840 ffff0000c0002140 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d3abe900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d3abe980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000d3abea00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
                                  ^
 ffff0000d3abea80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d3abeb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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