================================================================== BUG: KASAN: slab-out-of-bounds in data_blkaddr fs/f2fs/f2fs.h:2699 [inline] BUG: KASAN: slab-out-of-bounds in is_alive fs/f2fs/gc.c:1030 [inline] BUG: KASAN: slab-out-of-bounds in gc_data_segment fs/f2fs/gc.c:1448 [inline] BUG: KASAN: slab-out-of-bounds in do_garbage_collect+0x5fbc/0x7650 fs/f2fs/gc.c:1653 Read of size 4 at addr ffff8881dc0e2568 by task syz-executor.5/16963 CPU: 0 PID: 16963 Comm: syz-executor.5 Not tainted 5.4.210-syzkaller-00005-ge9f865cb240f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 print_address_description+0x8c/0x630 mm/kasan/report.c:384 __kasan_report+0xf6/0x130 mm/kasan/report.c:516 kasan_report+0x30/0x60 mm/kasan/common.c:653 data_blkaddr fs/f2fs/f2fs.h:2699 [inline] is_alive fs/f2fs/gc.c:1030 [inline] gc_data_segment fs/f2fs/gc.c:1448 [inline] do_garbage_collect+0x5fbc/0x7650 fs/f2fs/gc.c:1653 f2fs_gc+0x87c/0x18e0 fs/f2fs/gc.c:1745 f2fs_balance_fs+0x336/0x3e0 fs/f2fs/segment.c:528 f2fs_write_single_data_page+0xce0/0x19d0 fs/f2fs/data.c:2868 f2fs_write_cache_pages fs/f2fs/data.c:3083 [inline] __f2fs_write_data_pages+0x15cb/0x2c20 fs/f2fs/data.c:3234 do_writepages+0x13a/0x280 mm/page-writeback.c:2344 __filemap_fdatawrite_range mm/filemap.c:421 [inline] file_write_and_wait_range+0x33f/0x410 mm/filemap.c:782 f2fs_do_sync_file+0x5eb/0x1bb0 fs/f2fs/file.c:274 generic_write_sync include/linux/fs.h:2960 [inline] f2fs_file_write_iter+0x403/0xc10 fs/f2fs/file.c:4472 do_iter_readv_writev+0x529/0x740 fs/read_write.c:690 do_iter_write+0x16f/0x570 fs/read_write.c:970 iter_file_splice_write+0x887/0x10f0 fs/splice.c:746 splice_direct_to_actor+0x4c4/0xb20 fs/splice.c:976 do_splice_direct+0x2a0/0x3f0 fs/splice.c:1064 do_sendfile+0x8f2/0xf10 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1525 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x1ce/0x230 fs/read_write.c:1511 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f0091c6d639 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f00909c0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f0091d8e050 RCX: 00007f0091c6d639 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003 RBP: 00007f0091cc8ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdcebac48f R14: 00007f00909c0300 R15: 0000000000022000 Allocated by task 633: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x131/0x1e0 mm/kasan/common.c:529 kmalloc include/linux/slab.h:561 [inline] simple_xattr_alloc+0x3a/0x90 fs/xattr.c:890 shmem_initxattrs+0x8e/0x200 mm/shmem.c:3164 security_inode_init_security+0x26c/0x3c0 security/security.c:1009 shmem_mknod+0xb0/0x1a0 mm/shmem.c:2849 lookup_open fs/namei.c:3309 [inline] do_last fs/namei.c:3401 [inline] path_openat+0x1ea2/0x3ea0 fs/namei.c:3612 do_filp_open+0x208/0x450 fs/namei.c:3642 do_sys_open+0x393/0x7e0 fs/open.c:1113 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 633: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] kasan_set_free_info mm/kasan/common.c:345 [inline] __kasan_slab_free+0x178/0x240 mm/kasan/common.c:487 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook+0x80/0x150 mm/slub.c:1494 slab_free mm/slub.c:3080 [inline] kfree+0xc6/0x260 mm/slub.c:4071 simple_xattrs_free include/linux/xattr.h:100 [inline] shmem_evict_inode+0x873/0xa20 mm/shmem.c:1118 evict+0x29b/0x6a0 fs/inode.c:576 __dentry_kill+0x37a/0x570 fs/dcache.c:579 dentry_kill+0xb8/0x280 fs/dcache.c:673 dput+0x15f/0x300 fs/dcache.c:859 do_renameat2+0xce8/0x1190 fs/namei.c:4710 __do_sys_rename fs/namei.c:4752 [inline] __se_sys_rename fs/namei.c:4750 [inline] __x64_sys_rename+0x64/0x70 fs/namei.c:4750 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8881dc0e2500 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 40 bytes to the right of 64-byte region [ffff8881dc0e2500, ffff8881dc0e2540) The buggy address belongs to the page: page:ffffea0007703880 refcount:1 mapcount:0 mapping:ffff8881f5c03180 index:0x0 flags: 0x8000000000000200(slab) raw: 8000000000000200 ffffea00078c4fc0 0000000300000003 ffff8881f5c03180 raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY) set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2165 [inline] prep_new_page+0x194/0x380 mm/page_alloc.c:2171 get_page_from_freelist+0x524/0x560 mm/page_alloc.c:3794 __alloc_pages_nodemask+0x372/0x860 mm/page_alloc.c:4857 alloc_slab_page+0x39/0x3e0 mm/slub.c:343 allocate_slab mm/slub.c:1683 [inline] new_slab+0x97/0x450 mm/slub.c:1749 new_slab_objects mm/slub.c:2505 [inline] ___slab_alloc+0x320/0x4a0 mm/slub.c:2667 __slab_alloc+0x5a/0x90 mm/slub.c:2707 slab_alloc_node mm/slub.c:2792 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc_trace+0x129/0x240 mm/slub.c:2854 kmem_cache_alloc_node_trace include/linux/slab.h:444 [inline] kmalloc_node include/linux/slab.h:594 [inline] kzalloc_node include/linux/slab.h:701 [inline] __get_vm_area_node+0x1ab/0x340 mm/vmalloc.c:2059 __vmalloc_node_range+0xf0/0x730 mm/vmalloc.c:2494 __vmalloc_node mm/vmalloc.c:2554 [inline] __vmalloc_node_flags mm/vmalloc.c:2568 [inline] vmalloc+0x70/0x80 mm/vmalloc.c:2593 netlink_alloc_large_skb net/netlink/af_netlink.c:1189 [inline] netlink_sendmsg+0x61f/0xcc0 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg net/socket.c:658 [inline] kernel_sendmsg+0xf5/0x130 net/socket.c:678 sock_no_sendpage+0x143/0x1b0 net/core/sock.c:2778 kernel_sendpage net/socket.c:3755 [inline] sock_sendpage+0xd0/0x120 net/socket.c:936 pipe_to_sendpage+0x23b/0x300 fs/splice.c:449 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1176 [inline] free_pcp_prepare+0x1a4/0x290 mm/page_alloc.c:1233 free_unref_page_prepare mm/page_alloc.c:3085 [inline] free_unref_page+0x6a/0x230 mm/page_alloc.c:3134 pipe_buf_release include/linux/pipe_fs_i.h:131 [inline] splice_from_pipe_feed fs/splice.c:513 [inline] __splice_from_pipe+0x432/0x850 fs/splice.c:624 splice_from_pipe fs/splice.c:659 [inline] generic_splice_sendpage+0x193/0x220 fs/splice.c:829 do_splice_from fs/splice.c:848 [inline] do_splice fs/splice.c:1156 [inline] __do_sys_splice fs/splice.c:1433 [inline] __se_sys_splice+0x10de/0x1b60 fs/splice.c:1413 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Memory state around the buggy address: ffff8881dc0e2400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881dc0e2480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8881dc0e2500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff8881dc0e2580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881dc0e2600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================