NILFS (loop3): unable to write superblock: err=-5 ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: use-after-free in mapping_unevictable include/linux/pagemap.h:252 [inline] BUG: KASAN: use-after-free in folio_evictable mm/internal.h:138 [inline] BUG: KASAN: use-after-free in lru_add_fn+0x2d4/0x1ac0 mm/swap.c:210 Read of size 8 at addr ffff8880504e0540 by task syz-executor.3/8878 CPU: 0 PID: 8878 Comm: syz-executor.3 Not tainted 6.1.93-syzkaller #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+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] mapping_unevictable include/linux/pagemap.h:252 [inline] folio_evictable mm/internal.h:138 [inline] lru_add_fn+0x2d4/0x1ac0 mm/swap.c:210 folio_batch_move_lru+0x31a/0x720 mm/swap.c:246 lru_add_drain_cpu+0x108/0x8b0 mm/swap.c:669 lru_add_drain+0x11e/0x3e0 mm/swap.c:773 __pagevec_release+0x51/0xf0 mm/swap.c:1072 pagevec_release include/linux/pagevec.h:71 [inline] write_cache_pages+0x12bb/0x15c0 mm/page-writeback.c:2399 generic_writepages mm/page-writeback.c:2451 [inline] do_writepages+0x40f/0x670 mm/page-writeback.c:2471 __writeback_single_inode+0x15d/0x11e0 fs/fs-writeback.c:1612 writeback_single_inode+0x22c/0x960 fs/fs-writeback.c:1733 write_inode_now+0x1cf/0x260 fs/fs-writeback.c:2769 iput_final fs/inode.c:1778 [inline] iput+0x616/0x980 fs/inode.c:1817 nilfs_put_super+0xd3/0x150 fs/nilfs2/super.c:507 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1459 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd19327e1d7 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:00007fff40c6a618 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007fd19327e1d7 RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007fff40c6b7c0 RBP: 00007fd1932d9636 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000206 R12: 00007fff40c6b7c0 R13: 00007fd1932d9636 R14: 00005555571db430 R15: 0000000000000007 Allocated by task 9043: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x10c/0x2d0 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3193 [inline] nilfs_alloc_inode+0x2a/0xe0 fs/nilfs2/super.c:154 alloc_inode fs/inode.c:261 [inline] iget5_locked+0x9c/0x270 fs/inode.c:1285 nilfs_iget_locked+0x127/0x180 fs/nilfs2/inode.c:605 nilfs_ifile_read+0x2e/0x170 fs/nilfs2/ifile.c:187 nilfs_attach_checkpoint+0x260/0x4d0 fs/nilfs2/super.c:572 nilfs_fill_super+0x349/0x660 fs/nilfs2/super.c:1095 nilfs_mount+0x679/0x9a0 fs/nilfs2/super.c:1347 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1562 do_new_mount+0x2ba/0xb40 fs/namespace.c:3051 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 0: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x292/0x510 mm/slub.c:3683 rcu_do_batch kernel/rcu/tree.c:2296 [inline] rcu_core+0xad5/0x1810 kernel/rcu/tree.c:2556 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844 nilfs_put_root+0x93/0xb0 fs/nilfs2/the_nilfs.c:910 nilfs_segctor_destroy fs/nilfs2/segment.c:2811 [inline] nilfs_detach_log_writer+0x8c5/0xbe0 fs/nilfs2/segment.c:2874 nilfs_put_super+0x49/0x150 fs/nilfs2/super.c:498 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1459 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844 nilfs_detach_btree_node_cache fs/nilfs2/inode.c:713 [inline] nilfs_clear_inode+0x20c/0x2b0 fs/nilfs2/inode.c:909 nilfs_evict_inode+0x101/0x500 fs/nilfs2/inode.c:926 evict+0x2a4/0x620 fs/inode.c:666 nilfs_put_super+0x123/0x150 fs/nilfs2/super.c:509 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1459 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff8880504e0000 which belongs to the cache nilfs2_inode_cache of size 1512 The buggy address is located 1344 bytes inside of 1512-byte region [ffff8880504e0000, ffff8880504e05e8) The buggy address belongs to the physical page: page:ffffea0001413800 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880504e1338 pfn:0x504e0 head:ffffea0001413800 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888020f2a901 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff8881417e6000 raw: ffff8880504e1338 000000008013000f 00000001ffffffff ffff888020f2a901 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 6982, tgid 6981 (syz-executor.2), ts 299056915339, free_ts 296194245894 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5547 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x1a5/0x2d0 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3193 [inline] nilfs_alloc_inode+0x2a/0xe0 fs/nilfs2/super.c:154 alloc_inode fs/inode.c:261 [inline] iget5_locked+0x9c/0x270 fs/inode.c:1285 nilfs_attach_btree_node_cache+0x2b1/0x430 fs/nilfs2/inode.c:683 nilfs_btree_prepare_convert_and_insert fs/nilfs2/btree.c:1758 [inline] nilfs_btree_convert_and_insert+0x215/0x19c0 fs/nilfs2/btree.c:1890 nilfs_bmap_do_insert fs/nilfs2/bmap.c:119 [inline] nilfs_bmap_insert+0x1c2/0x3a0 fs/nilfs2/bmap.c:155 nilfs_mdt_insert_new_block fs/nilfs2/mdt.c:44 [inline] nilfs_mdt_create_block fs/nilfs2/mdt.c:93 [inline] nilfs_mdt_get_block+0x37b/0xae0 fs/nilfs2/mdt.c:255 nilfs_palloc_get_block+0x181/0x290 fs/nilfs2/alloc.c:217 nilfs_palloc_get_entry_block+0x8a/0xa0 fs/nilfs2/alloc.c:319 nilfs_dat_prepare_entry fs/nilfs2/dat.c:45 [inline] nilfs_dat_prepare_alloc+0x63/0x100 fs/nilfs2/dat.c:82 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1440 [inline] free_pcp_prepare mm/page_alloc.c:1490 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3453 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422 getname_flags+0xb8/0x4f0 fs/namei.c:139 do_sys_openat2+0xd2/0x500 fs/open.c:1312 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1345 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff8880504e0400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880504e0480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880504e0500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880504e0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc ffff8880504e0600: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb ==================================================================