================================================================== BUG: KASAN: slab-out-of-bounds in neon_poly1305_do_update arch/arm64/crypto/poly1305-glue.c:107 [inline] BUG: KASAN: slab-out-of-bounds in neon_poly1305_update+0x2e0/0xb34 arch/arm64/crypto/poly1305-glue.c:119 Read of size 8 at addr ffff0000f43c1020 by task syz-executor.0/6680 CPU: 1 PID: 6680 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x198/0x538 mm/kasan/report.c:488 kasan_report+0xd8/0x138 mm/kasan/report.c:601 kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105 neon_poly1305_do_update arch/arm64/crypto/poly1305-glue.c:107 [inline] neon_poly1305_update+0x2e0/0xb34 arch/arm64/crypto/poly1305-glue.c:119 crypto_shash_update+0x90/0xa8 crypto/shash.c:70 bch2_checksum+0x690/0x770 fs/bcachefs/checksum.c:228 bch2_btree_node_read_done+0xccc/0x45f0 fs/bcachefs/btree_io.c:1096 btree_node_read_work+0x4e8/0xe9c fs/bcachefs/btree_io.c:1324 bch2_btree_node_read+0x210c/0x28e4 fs/bcachefs/btree_io.c:1709 __bch2_btree_root_read fs/bcachefs/btree_io.c:1748 [inline] bch2_btree_root_read+0x2a8/0x534 fs/bcachefs/btree_io.c:1772 read_btree_roots+0x21c/0x730 fs/bcachefs/recovery.c:457 bch2_fs_recovery+0x2dac/0x4854 fs/bcachefs/recovery.c:785 bch2_fs_start+0x30c/0x53c fs/bcachefs/super.c:1043 bch2_fs_open+0x8b4/0xb64 fs/bcachefs/super.c:2102 bch2_mount+0x558/0xe10 fs/bcachefs/fs.c:1903 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662 vfs_get_tree+0x90/0x288 fs/super.c:1779 do_new_mount+0x278/0x900 fs/namespace.c:3352 path_mount+0x590/0xe04 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] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Allocated by task 5859: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3966 [inline] __kmalloc+0x2b8/0x508 mm/slub.c:3979 kmalloc include/linux/slab.h:632 [inline] tomoyo_realpath_from_path+0xc8/0x4cc security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1ec/0x414 security/tomoyo/file.c:771 tomoyo_file_open+0x15c/0x1ec security/tomoyo/tomoyo.c:334 security_file_open+0x70/0x4d8 security/security.c:2961 do_dentry_open+0x29c/0x12b4 fs/open.c:942 vfs_open+0x7c/0x90 fs/open.c:1089 do_open fs/namei.c:3642 [inline] path_openat+0x1f6c/0x2830 fs/namei.c:3799 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Freed by task 5859: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:579 poison_slab_object+0x124/0x18c mm/kasan/common.c:240 __kasan_slab_free+0x3c/0x70 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2106 [inline] slab_free mm/slub.c:4280 [inline] kfree+0x150/0x3e8 mm/slub.c:4390 tomoyo_realpath_from_path+0x484/0x4cc security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1ec/0x414 security/tomoyo/file.c:771 tomoyo_file_open+0x15c/0x1ec security/tomoyo/tomoyo.c:334 security_file_open+0x70/0x4d8 security/security.c:2961 do_dentry_open+0x29c/0x12b4 fs/open.c:942 vfs_open+0x7c/0x90 fs/open.c:1089 do_open fs/namei.c:3642 [inline] path_openat+0x1f6c/0x2830 fs/namei.c:3799 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 The buggy address belongs to the object at ffff0000f43c0000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 32 bytes to the right of allocated 4096-byte region [ffff0000f43c0000, ffff0000f43c1000) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1343c0 head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000840 ffff0000c0002140 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 head: 05ffc00000000840 ffff0000c0002140 dead000000000122 0000000000000000 head: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 head: 05ffc00000000003 fffffdffc3d0f001 dead000000000122 00000000ffffffff head: 0000000800000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000f43c0f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000f43c0f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000f43c1000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000f43c1080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000f43c1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== bcachefs (loop0): error validating btree node on loop0 at btree dirents level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 267fcf747c875937 written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0 node offset 8/24 bset u64s 32768: checksum error, type chacha20_poly1305_128: got 017e80034839769ceb78df5dd1bbed42 should be abbf307d6f4195551a4398bf111cbb27, shutting down bcachefs (loop0): inconsistency detected - emergency read only at journal seq 13 bcachefs (loop0): flagging btree dirents lost data