loop0: detected capacity change from 0 to 32768 bcachefs (/dev/loop0): error reading default superblock: checksum error, type none: got should be bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,wide_macs,grpquota,journal_flush_disabled,nojournal_transaction_names bcachefs (loop0): recovering from clean shutdown, journal seq 13 bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.20: directory_size running recovery passes: check_allocations,check_extents_to_backpointers,check_inodes bcachefs (loop0): error validating btree node on loop0 at btree alloc level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1818ce08861e3527 written 40 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0 node offset 8/40 bset u64s 375: checksum error, type chacha20_poly1305_128: got d3858631e45458249b6b9a83929a82a0 should be 61ec379a8789477e76ff1a5280fd6dbd, fixing bcachefs (loop0): error validating btree node at btree alloc level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1818ce08861e3527 written 40 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0 node offset 8/40 bset u64s 375 bset byte offset 832: invalid bkey format 27, fixing bcachefs (loop0): error validating btree node at btree alloc level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1818ce08861e3527 written 40 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0 node offset 8/40 bset u64s 374 bset byte offset 832: bad k->u64s 1 (min 3 max 253), fixing invalid bkey in btree_node btree=alloc level=0: u64s 29 type deleted 1:256:65536 len 0 ver 0: nonzero snapshot: delete?, fixing bcachefs (loop0): flagging btree alloc lost data bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_lrus (14), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_backpointers_to_extents (16), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_alloc_info (13), currently at recovery_pass_empty (0) error reading btree root btree=alloc level=0: btree_node_read_error, fixing ================================================================== BUG: KASAN: use-after-free in crypto_poly1305_update+0x28/0x40 arch/x86/crypto/poly1305_glue.c:230 Read of size 8 at addr ffff888055099850 by task syz.0.0/5324 CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.14.0-rc3-syzkaller-00079-g87a132e73910 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 crypto_poly1305_update+0x28/0x40 arch/x86/crypto/poly1305_glue.c:230 bch2_checksum+0x5fa/0x780 fs/bcachefs/checksum.c:239 bch2_btree_node_read_done+0x1402/0x6180 fs/bcachefs/btree_io.c:1130 btree_node_read_work+0x6dc/0x1380 fs/bcachefs/btree_io.c:1358 bch2_btree_node_read+0x2433/0x29f0 __bch2_btree_root_read fs/bcachefs/btree_io.c:1789 [inline] bch2_btree_root_read+0x626/0x7b0 fs/bcachefs/btree_io.c:1811 read_btree_roots+0x3d3/0xa70 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x260f/0x3de0 fs/bcachefs/recovery.c:928 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1041 bch2_fs_get_tree+0xdb7/0x17a0 fs/bcachefs/fs.c:2203 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f588618e58a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5886fe6e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5886fe6ef0 RCX: 00007f588618e58a RDX: 000040000000f640 RSI: 0000400000000200 RDI: 00007f5886fe6eb0 RBP: 000040000000f640 R08: 00007f5886fe6ef0 R09: 0000000002a18414 R10: 0000000002a18414 R11: 0000000000000246 R12: 0000400000000200 R13: 00007f5886fe6eb0 R14: 000000000000f63b R15: 0000400000000100 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x55099 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 0000000000000000 ffffea0001542648 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 5, migratetype Reclaimable, gfp_mask 0x452cd0(GFP_KERNEL_ACCOUNT|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_RECLAIMABLE), pid 5324, tgid 5322 (syz.0.0), ts 69683410085, free_ts 69857013543 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551 prep_new_page mm/page_alloc.c:1559 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739 __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:4773 __alloc_pages_node_noprof include/linux/gfp.h:265 [inline] alloc_pages_node_noprof include/linux/gfp.h:292 [inline] ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4239 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4266 __do_kmalloc_node mm/slub.c:4282 [inline] __kmalloc_node_noprof+0x33a/0x4d0 mm/slub.c:4300 __kvmalloc_node_noprof+0x72/0x190 mm/util.c:662 btree_node_data_alloc+0xdb/0x260 fs/bcachefs/btree_cache.c:156 __bch2_btree_node_mem_alloc+0x201/0x420 fs/bcachefs/btree_cache.c:201 bch2_fs_btree_cache_init+0x27a/0x630 fs/bcachefs/btree_cache.c:655 bch2_fs_alloc fs/bcachefs/super.c:919 [inline] bch2_fs_open+0x2d2d/0x31e0 fs/bcachefs/super.c:2064 bch2_fs_get_tree+0x738/0x17a0 fs/bcachefs/fs.c:2190 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 page last free pid 5324 tgid 5322 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] __free_pages_ok+0xbbf/0xe40 mm/page_alloc.c:1271 __folio_put+0x2b3/0x360 mm/swap.c:112 folio_put include/linux/mm.h:1489 [inline] free_large_kmalloc+0xfe/0x180 mm/slub.c:4728 kfree+0x212/0x430 mm/slub.c:4751 btree_bounce_free fs/bcachefs/btree_io.c:111 [inline] bch2_btree_node_read_done+0x3c89/0x6180 fs/bcachefs/btree_io.c:1243 btree_node_read_work+0x6dc/0x1380 fs/bcachefs/btree_io.c:1358 bch2_btree_node_read+0x2433/0x29f0 __bch2_btree_root_read fs/bcachefs/btree_io.c:1789 [inline] bch2_btree_root_read+0x626/0x7b0 fs/bcachefs/btree_io.c:1811 read_btree_roots+0x3d3/0xa70 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x260f/0x3de0 fs/bcachefs/recovery.c:928 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1041 bch2_fs_get_tree+0xdb7/0x17a0 fs/bcachefs/fs.c:2203 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 Memory state around the buggy address: ffff888055099700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888055099780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888055099800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888055099880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888055099900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================