NILFS (loop0): discard dirty block: blocknr=25, size=4096
NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer
==================================================================
BUG: KASAN: slab-use-after-free in nilfs_load_inode_block+0x11e/0x280 fs/nilfs2/inode.c:1030
Read of size 8 at addr ffff888017a79a30 by task syz-executor.0/5048

CPU: 0 PID: 5048 Comm: syz-executor.0 Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:351 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:462
 kasan_report+0x176/0x1b0 mm/kasan/report.c:572
 nilfs_load_inode_block+0x11e/0x280 fs/nilfs2/inode.c:1030
 __nilfs_mark_inode_dirty+0xa5/0x280 fs/nilfs2/inode.c:1107
 nilfs_dirty_inode+0x164/0x200 fs/nilfs2/inode.c:1148
 __mark_inode_dirty+0x305/0xd90 fs/fs-writeback.c:2424
 mark_inode_dirty_sync include/linux/fs.h:2154 [inline]
 iput+0x1f2/0x8f0 fs/inode.c:1812
 nilfs_dispose_list+0x51d/0x5c0 fs/nilfs2/segment.c:816
 nilfs_detach_log_writer+0xaf1/0xbb0 fs/nilfs2/segment.c:2859
 nilfs_put_super+0x4d/0x160 fs/nilfs2/super.c:498
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x68/0xa0 fs/super.c:1418
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8e4a8d7f7
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc17648978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe8e4a8d7f7
RDX: 00007ffc17648a49 RSI: 000000000000000a RDI: 00007ffc17648a40
RBP: 00007ffc17648a40 R08: 00000000ffffffff R09: 00007ffc17648810
R10: 00005555571c6873 R11: 0000000000000246 R12: 00007fe8e4ad643b
R13: 00007ffc17649b00 R14: 00005555571c6810 R15: 00007ffc17649b40
 </TASK>

Allocated by task 21733:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:559 [inline]
 kzalloc include/linux/slab.h:680 [inline]
 nilfs_find_or_create_root+0x137/0x4e0 fs/nilfs2/the_nilfs.c:851
 nilfs_attach_checkpoint+0x123/0x4d0 fs/nilfs2/super.c:550
 nilfs_fill_super+0x321/0x600 fs/nilfs2/super.c:1095
 nilfs_mount+0x637/0x950 fs/nilfs2/super.c:1343
 legacy_get_tree+0xef/0x190 fs/fs_context.c:611
 vfs_get_tree+0x8c/0x270 fs/super.c:1520
 do_new_mount+0x28f/0xae0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 5048:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3786 [inline]
 __kmem_cache_free+0x264/0x3c0 mm/slub.c:3799
 nilfs_segctor_destroy fs/nilfs2/segment.c:2782 [inline]
 nilfs_detach_log_writer+0x8c1/0xbb0 fs/nilfs2/segment.c:2845
 nilfs_put_super+0x4d/0x160 fs/nilfs2/super.c:498
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x68/0xa0 fs/super.c:1418
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888017a79a00
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 48 bytes inside of
 freed 256-byte region [ffff888017a79a00, ffff888017a79b00)

The buggy address belongs to the physical page:
page:ffffea00005e9e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17a78
head:ffffea00005e9e00 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff888012441b40 ffffea0001ec2200 dead000000000004
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 3183085218, free_ts 0
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1744
 prep_new_page mm/page_alloc.c:1751 [inline]
 get_page_from_freelist+0x320e/0x3390 mm/page_alloc.c:3523
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4794
 alloc_page_interleave+0x22/0x1d0 mm/mempolicy.c:2112
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3192
 __slab_alloc mm/slub.c:3291 [inline]
 __slab_alloc_node mm/slub.c:3344 [inline]
 slab_alloc_node mm/slub.c:3441 [inline]
 __kmem_cache_alloc_node+0x1b8/0x290 mm/slub.c:3490
 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1057
 kmalloc include/linux/slab.h:559 [inline]
 kzalloc include/linux/slab.h:680 [inline]
 bus_add_driver+0x163/0x620 drivers/base/bus.c:657
 driver_register+0x23a/0x320 drivers/base/driver.c:246
 phy_driver_register+0x1d1/0x310 drivers/net/phy/phy_device.c:3384
 phy_init+0x71d/0x780 drivers/net/phy/phy_device.c:3462
 do_one_initcall+0x23d/0x7d0 init/main.c:1232
 do_initcall_level+0x157/0x210 init/main.c:1305
 do_initcalls+0x3f/0x80 init/main.c:1321
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888017a79900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888017a79980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888017a79a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff888017a79a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888017a79b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================