NILFS (loop0): disposed unprocessed dirty file(s) when stopping log writer Buffer I/O error on dev loop0, logical block 1020, lost sync page write 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:259 [inline] BUG: KASAN: slab-use-after-free in folio_evictable mm/internal.h:353 [inline] BUG: KASAN: slab-use-after-free in lru_add_fn+0x192/0xd70 mm/swap.c:184 Read of size 8 at addr ffff888063924b20 by task syz-executor.0/10869 CPU: 0 PID: 10869 Comm: syz-executor.0 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0xef/0x1a0 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:259 [inline] folio_evictable mm/internal.h:353 [inline] lru_add_fn+0x192/0xd70 mm/swap.c:184 folio_batch_move_lru+0x243/0x400 mm/swap.c:220 lru_add_drain_cpu+0x534/0x860 mm/swap.c:657 lru_add_drain+0x109/0x440 mm/swap.c:757 __folio_batch_release+0x68/0xb0 mm/swap.c:1081 folio_batch_release include/linux/pagevec.h:101 [inline] writeback_get_folio mm/page-writeback.c:2438 [inline] writeback_iter+0xd97/0x1150 mm/page-writeback.c:2541 writeback_use_writepage mm/page-writeback.c:2610 [inline] do_writepages+0x2d7/0x7f0 mm/page-writeback.c:2636 __writeback_single_inode+0x163/0xf90 fs/fs-writeback.c:1651 writeback_single_inode+0x2b5/0x5a0 fs/fs-writeback.c:1772 write_inode_now+0x174/0x1f0 fs/fs-writeback.c:2822 iput_final fs/inode.c:1728 [inline] iput.part.0+0x4a4/0x7f0 fs/inode.c:1767 iput+0x5c/0x80 fs/inode.c:1757 nilfs_put_super+0xb8/0x1b0 fs/nilfs2/super.c:507 generic_shutdown_super+0x159/0x3d0 fs/super.c:642 kill_block_super+0x3b/0x90 fs/super.c:1676 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 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+0x278/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb1a447e1d7 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:00007ffdb7ca01b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007fb1a447e1d7 RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffdb7ca1360 RBP: 00007fb1a44d9636 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffdb7ca1360 R13: 00007fb1a44d9636 R14: 000055558c343430 R15: 0000000000000007 Allocated by task 14374: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3941 [inline] slab_alloc_node mm/slub.c:4001 [inline] kmem_cache_alloc_lru_noprof+0x121/0x2f0 mm/slub.c:4020 nilfs_alloc_inode+0x26/0x150 fs/nilfs2/super.c:154 alloc_inode+0x5d/0x230 fs/inode.c:261 iget5_locked fs/inode.c:1235 [inline] iget5_locked+0x1c9/0x2c0 fs/inode.c:1228 nilfs_iget_locked+0xa1/0xe0 fs/nilfs2/inode.c:606 nilfs_ifile_read+0x2f/0x1e0 fs/nilfs2/ifile.c:192 nilfs_attach_checkpoint+0x12d/0x1d0 fs/nilfs2/super.c:557 nilfs_fill_super fs/nilfs2/super.c:1067 [inline] nilfs_get_tree+0x951/0x1000 fs/nilfs2/super.c:1211 vfs_get_tree+0x8f/0x380 fs/super.c:1780 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __x64_sys_mount+0x297/0x320 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 16: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2196 [inline] slab_free mm/slub.c:4437 [inline] kmem_cache_free+0x12f/0x3a0 mm/slub.c:4512 i_callback+0x43/0x70 fs/inode.c:250 rcu_do_batch kernel/rcu/tree.c:2535 [inline] rcu_core+0x828/0x16b0 kernel/rcu/tree.c:2809 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 run_ksoftirqd kernel/softirq.c:928 [inline] run_ksoftirqd+0x3a/0x60 kernel/softirq.c:920 smpboot_thread_fn+0x661/0xa10 kernel/smpboot.c:164 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Last potentially related work creation: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:541 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:3072 destroy_inode+0x12c/0x1b0 fs/inode.c:316 iput_final fs/inode.c:1741 [inline] iput.part.0+0x5a8/0x7f0 fs/inode.c:1767 iput+0x5c/0x80 fs/inode.c:1757 nilfs_put_root+0xae/0xe0 fs/nilfs2/the_nilfs.c:925 nilfs_segctor_destroy fs/nilfs2/segment.c:2788 [inline] nilfs_detach_log_writer+0x5ef/0xaa0 fs/nilfs2/segment.c:2850 nilfs_put_super+0x43/0x1b0 fs/nilfs2/super.c:498 generic_shutdown_super+0x159/0x3d0 fs/super.c:642 kill_block_super+0x3b/0x90 fs/super.c:1676 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 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+0x278/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888063924678 which belongs to the cache nilfs2_inode_cache of size 1512 The buggy address is located 1192 bytes inside of freed 1512-byte region [ffff888063924678, ffff888063924c60) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x63920 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88802e854701 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 00fff00000000040 ffff88801a7c6000 ffffea00016e4400 0000000000000002 raw: 0000000000000000 0000000080130013 00000001ffffefff ffff88802e854701 head: 00fff00000000040 ffff88801a7c6000 ffffea00016e4400 0000000000000002 head: 0000000000000000 0000000080130013 00000001ffffefff ffff88802e854701 head: 00fff00000000003 ffffea00018e4801 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 5243, tgid 5242 (syz-executor.2), ts 90763281860, free_ts 23444472683 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1468 prep_new_page mm/page_alloc.c:1476 [inline] get_page_from_freelist+0x136a/0x2e50 mm/page_alloc.c:3420 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4678 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x56/0x110 mm/slub.c:2265 allocate_slab mm/slub.c:2428 [inline] new_slab+0x84/0x260 mm/slub.c:2481 ___slab_alloc+0xdac/0x1870 mm/slub.c:3667 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757 __slab_alloc_node mm/slub.c:3810 [inline] slab_alloc_node mm/slub.c:3989 [inline] kmem_cache_alloc_lru_noprof+0x2a0/0x2f0 mm/slub.c:4020 nilfs_alloc_inode+0x26/0x150 fs/nilfs2/super.c:154 alloc_inode+0x5d/0x230 fs/inode.c:261 iget5_locked fs/inode.c:1235 [inline] iget5_locked+0x1c9/0x2c0 fs/inode.c:1228 nilfs_attach_btree_node_cache+0x255/0x410 fs/nilfs2/inode.c:684 nilfs_btree_prepare_convert_and_insert fs/nilfs2/btree.c:1758 [inline] nilfs_btree_convert_and_insert+0xa6f/0x1100 fs/nilfs2/btree.c:1899 nilfs_bmap_do_insert fs/nilfs2/bmap.c:119 [inline] nilfs_bmap_insert+0x2bc/0x410 fs/nilfs2/bmap.c:155 nilfs_get_block+0x579/0xa90 fs/nilfs2/inode.c:101 __block_write_begin_int+0x4fb/0x16e0 fs/buffer.c:2128 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1088 [inline] free_unref_page+0x64a/0xe40 mm/page_alloc.c:2583 free_contig_range+0xb6/0x1a0 mm/page_alloc.c:6637 destroy_args+0xa4e/0xe20 mm/debug_vm_pgtable.c:1038 debug_vm_pgtable+0x16db/0x3220 mm/debug_vm_pgtable.c:1418 do_one_initcall+0x128/0x700 init/main.c:1267 do_initcall_level init/main.c:1329 [inline] do_initcalls init/main.c:1345 [inline] do_basic_setup init/main.c:1364 [inline] kernel_init_freeable+0x69d/0xca0 init/main.c:1578 kernel_init+0x1c/0x2b0 init/main.c:1467 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff888063924a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888063924a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888063924b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888063924b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888063924c00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================