KASAN: out-of-bounds Read in leaf_copy_items

Date	Name	Commit	Repro	Result
2023/06/24	upstream (ToT)	a92b7d26c743	C	[report] KASAN: out-of-bounds Read in leaf_paste_in_buffer
2024/04/19	upstream (ToT)	2668e3ae2ef3	C	Failed due to an error; will retry later

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: out-of-bounds Read in leaf_copy_items_entirely reiserfs				1	460d	456d	0/26	auto-obsoleted due to no activity on 2023/04/26 19:07
upstream	KASAN: use-after-free Read in leaf_copy_items_entirely reiserfs				1	344d	344d	0/26	auto-obsoleted due to no activity on 2023/08/30 18:25

upstream

KASAN: out-of-bounds Read in leaf_copy_items_entirely reiserfs

460d

456d

0/26

auto-obsoleted due to no activity on 2023/04/26 19:07

upstream

KASAN: use-after-free Read in leaf_copy_items_entirely reiserfs

344d

0/26

auto-obsoleted due to no activity on 2023/08/30 18:25

REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ================================================================== BUG: KASAN: out-of-bounds in leaf_copy_items_entirely+0xac8/0xee0 fs/reiserfs/lbalance.c:384 Read of size 18446744073709500467 at addr ffff888079a5d000 by task syz-executor336/3538 CPU: 1 PID: 3538 Comm: syz-executor336 Not tainted 6.1.35-syzkaller #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+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 memcpy+0x25/0x60 mm/kasan/shadow.c:65 leaf_copy_items_entirely+0xac8/0xee0 fs/reiserfs/lbalance.c:384 leaf_copy_items fs/reiserfs/lbalance.c:610 [inline] leaf_move_items+0xfd4/0x28a0 fs/reiserfs/lbalance.c:726 balance_leaf_new_nodes_paste_whole fs/reiserfs/do_balan.c:1162 [inline] balance_leaf_new_nodes_paste fs/reiserfs/do_balan.c:1215 [inline] balance_leaf_new_nodes fs/reiserfs/do_balan.c:1246 [inline] balance_leaf+0x6515/0x12510 fs/reiserfs/do_balan.c:1450 do_balance+0x309/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x73b/0x880 fs/reiserfs/stree.c:2159 reiserfs_get_block+0x2259/0x5150 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:1991 reiserfs_write_begin+0x249/0x510 fs/reiserfs/inode.c:2775 generic_cont_expand_simple+0x187/0x2a0 fs/buffer.c:2347 reiserfs_setattr+0x606/0x11c0 fs/reiserfs/inode.c:3305 notify_change+0xdcd/0x1080 fs/attr.c:482 do_truncate+0x21c/0x300 fs/open.c:65 do_sys_ftruncate+0x2e2/0x380 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f13a444e859 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe39b98438 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f13a444e859 RDX: 00007f13a444e859 RSI: 0000000002007fff RDI: 0000000000000004 RBP: 00007f13a440e0f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13a440e180 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> The buggy address belongs to the physical page: page:ffffea0001e69740 refcount:2 mapcount:0 mapping:ffff8880128af5f8 index:0x213 pfn:0x79a5d memcg:ffff888140148000 aops:def_blk_aops ino:700000 flags: 0xfff38000002052(referenced|lru|workingset|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff38000002052 ffffea0001c2c7c8 ffffea0001c2c808 ffff8880128af5f8 raw: 0000000000000213 ffff8880704043a0 00000002ffffffff ffff888140148000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 3538, tgid 3538 (syz-executor336), ts 52491197749, free_ts 52349239906 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559 folio_alloc+0x1a/0x50 mm/mempolicy.c:2290 filemap_alloc_folio+0xda/0x4f0 mm/filemap.c:971 __filemap_get_folio+0x711/0xe30 mm/filemap.c:1965 pagecache_get_page+0x28/0x250 mm/folio-compat.c:110 find_or_create_page include/linux/pagemap.h:613 [inline] grow_dev_page fs/buffer.c:946 [inline] grow_buffers fs/buffer.c:1011 [inline] __getblk_slow fs/buffer.c:1038 [inline] __getblk_gfp+0x211/0xa20 fs/buffer.c:1333 sb_getblk include/linux/buffer_head.h:356 [inline] search_by_key+0x460/0x4b60 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x23c/0x2950 fs/reiserfs/inode.c:1549 reiserfs_fill_super+0x135f/0x2620 fs/reiserfs/super.c:2071 mount_bdev+0x2c9/0x3f0 fs/super.c:1423 legacy_get_tree+0xeb/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1553 do_new_mount+0x28b/0xae0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3568 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388 free_unref_page_list+0x107/0x810 mm/page_alloc.c:3530 release_pages+0x2836/0x2b40 mm/swap.c:1055 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361 exit_mmap+0x3c3/0x9f0 mm/mmap.c:3139 __mmput+0x115/0x3c0 kernel/fork.c:1191 exec_mmap+0x4fa/0x5b0 fs/exec.c:1035 begin_new_exec+0x7ac/0x1030 fs/exec.c:1294 load_elf_binary+0x945/0x2750 fs/binfmt_elf.c:1002 search_binary_handler fs/exec.c:1727 [inline] exec_binprm fs/exec.c:1768 [inline] bprm_execve+0x8ff/0x1820 fs/exec.c:1837 do_execveat_common+0x580/0x720 fs/exec.c:1942 do_execve fs/exec.c:2016 [inline] __do_sys_execve fs/exec.c:2092 [inline] __se_sys_execve fs/exec.c:2087 [inline] __x64_sys_execve+0x8e/0xa0 fs/exec.c:2087 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888079a5cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888079a5cf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888079a5d000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888079a5d080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888079a5d100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/06/24 04:15	linux-6.1.y	e84a4e368abe	79782afc	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-6-1-kasan	KASAN: out-of-bounds Read in leaf_copy_items_entirely

Crashes (1):

Assets (help?)