NILFS (loop0): unable to write superblock: err=-5
Buffer I/O error on dev loop0, logical block 1, lost sync page write
NILFS (loop0): unable to write superblock: err=-5
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: slab-use-after-free in mapping_unevictable include/linux/pagemap.h:260 [inline]
BUG: KASAN: slab-use-after-free in folio_evictable mm/internal.h:370 [inline]
BUG: KASAN: slab-use-after-free in lru_add_fn+0x2cc/0x1a20 mm/swap.c:183
Read of size 8 at addr ffff88805202e440 by task syz-executor.0/7816

CPU: 0 PID: 7816 Comm: syz-executor.0 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:91 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 mapping_unevictable include/linux/pagemap.h:260 [inline]
 folio_evictable mm/internal.h:370 [inline]
 lru_add_fn+0x2cc/0x1a20 mm/swap.c:183
 folio_batch_move_lru+0x31f/0x690 mm/swap.c:219
 lru_add_drain_cpu+0x10e/0x8c0 mm/swap.c:656
 lru_add_drain+0x123/0x3e0 mm/swap.c:756
 __folio_batch_release+0x55/0xa0 mm/swap.c:1077
 folio_batch_release include/linux/pagevec.h:101 [inline]
 writeback_get_folio mm/page-writeback.c:2461 [inline]
 writeback_iter+0x742/0x18d0 mm/page-writeback.c:2564
 writeback_use_writepage mm/page-writeback.c:2633 [inline]
 do_writepages+0x4b9/0x870 mm/page-writeback.c:2659
 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1651
 writeback_single_inode+0x21b/0x7a0 fs/fs-writeback.c:1772
 write_inode_now+0x1d1/0x260 fs/fs-writeback.c:2822
 iput_final fs/inode.c:1728 [inline]
 iput+0x5d7/0x930 fs/inode.c:1767
 nilfs_put_super+0xd7/0x160 fs/nilfs2/super.c:507
 generic_shutdown_super+0x136/0x2d0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1676
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1267
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ec367e1d7
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 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 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc2841fd58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007f6ec367e1d7
RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffc28420f00
RBP: 00007f6ec36d9636 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000202 R12: 00007ffc28420f00
R13: 00007f6ec36d9636 R14: 000055557a137430 R15: 0000000000000007
 </TASK>

Allocated by task 9713:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3959 [inline]
 slab_alloc_node mm/slub.c:4019 [inline]
 kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4038
 nilfs_alloc_inode+0x2e/0xf0 fs/nilfs2/super.c:154
 alloc_inode fs/inode.c:261 [inline]
 iget5_locked+0xa4/0x280 fs/inode.c:1235
 nilfs_iget_locked+0x12b/0x180 fs/nilfs2/inode.c:606
 nilfs_ifile_read+0x30/0x1b0 fs/nilfs2/ifile.c:192
 nilfs_attach_checkpoint+0xed/0x1a0 fs/nilfs2/super.c:557
 nilfs_fill_super+0x380/0x6a0 fs/nilfs2/super.c:1067
 nilfs_get_tree+0x4f9/0x920 fs/nilfs2/super.c:1211
 vfs_get_tree+0x90/0x2a0 fs/super.c:1780
 do_new_mount+0x2be/0xb40 fs/namespace.c:3379
 do_mount fs/namespace.c:3719 [inline]
 __do_sys_mount fs/namespace.c:3925 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3902
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 16:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2214 [inline]
 slab_free mm/slub.c:4455 [inline]
 kmem_cache_free+0x145/0x350 mm/slub.c:4530
 rcu_do_batch kernel/rcu/tree.c:2564 [inline]
 rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2838
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:3101 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:3205
 nilfs_put_root+0x97/0xc0 fs/nilfs2/the_nilfs.c:925
 nilfs_segctor_destroy fs/nilfs2/segment.c:2788 [inline]
 nilfs_detach_log_writer+0x8ca/0xbe0 fs/nilfs2/segment.c:2850
 nilfs_put_super+0x4d/0x160 fs/nilfs2/super.c:498
 generic_shutdown_super+0x136/0x2d0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1676
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1267
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88805202dfa0
 which belongs to the cache nilfs2_inode_cache of size 1504
The buggy address is located 1184 bytes inside of
 freed 1504-byte region [ffff88805202dfa0, ffff88805202e580)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x52028
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88802ce18f01
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000040 ffff88801b7b23c0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080140014 00000001fdffffff ffff88802ce18f01
head: 00fff00000000040 ffff88801b7b23c0 dead000000000122 0000000000000000
head: 0000000000000000 0000000080140014 00000001fdffffff ffff88802ce18f01
head: 00fff00000000003 ffffea0001480a01 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 8649, tgid 8648 (syz-executor.2), ts 253760693114, free_ts 252966842255
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
 prep_new_page mm/page_alloc.c:1478 [inline]
 get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2283
 allocate_slab+0x5a/0x2f0 mm/slub.c:2446
 new_slab mm/slub.c:2499 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
 __slab_alloc+0x58/0xa0 mm/slub.c:3775
 __slab_alloc_node mm/slub.c:3828 [inline]
 slab_alloc_node mm/slub.c:4007 [inline]
 kmem_cache_alloc_lru_noprof+0x1c5/0x2b0 mm/slub.c:4038
 nilfs_alloc_inode+0x2e/0xf0 fs/nilfs2/super.c:154
 alloc_inode fs/inode.c:261 [inline]
 iget5_locked+0xa4/0x280 fs/inode.c:1235
 nilfs_iget_locked+0x12b/0x180 fs/nilfs2/inode.c:606
 nilfs_dat_read+0xc3/0x310 fs/nilfs2/dat.c:508
 nilfs_load_super_root fs/nilfs2/the_nilfs.c:120 [inline]
 load_nilfs+0x56f/0x1090 fs/nilfs2/the_nilfs.c:301
 nilfs_fill_super+0x310/0x6a0 fs/nilfs2/super.c:1062
 nilfs_get_tree+0x4f9/0x920 fs/nilfs2/super.c:1211
 vfs_get_tree+0x90/0x2a0 fs/super.c:1780
page last free pid 8615 tgid 8614 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1089 [inline]
 free_unref_page+0xd22/0xea0 mm/page_alloc.c:2621
 __slab_free+0x31b/0x3d0 mm/slub.c:4366
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3959 [inline]
 slab_alloc_node mm/slub.c:4019 [inline]
 __kmalloc_cache_noprof+0x132/0x2c0 mm/slub.c:4166
 kmalloc_noprof include/linux/slab.h:660 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 ref_tracker_alloc+0x14b/0x490 lib/ref_tracker.c:203
 register_netdevice+0x1408/0x19e0 net/core/dev.c:10395
 tun_set_iff+0x85f/0xe80 drivers/net/tun.c:2851
 __tun_chr_ioctl+0x866/0x2400 drivers/net/tun.c:3120
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88805202e300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805202e380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88805202e400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff88805202e480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805202e500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================