loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,metadata_target=/dev/loop0,noinodes_use_key_cache,very_degraded,nojournal_transaction_names allowing incompatible features above 0.0: (unknown version) bcachefs (loop0): recovering from clean shutdown, journal seq 13 bcachefs (loop0): Version upgrade required: Version upgrade from 0.32: (unknown version) to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.32: (unknown version) to 1.25: extent_flags running recovery passes: check_allocations,check_extents_to_backpointers,check_snapshots,check_subvols,check_inodes,check_dirents,set_fs_needs_rebalance bcachefs (loop0): 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 6: checksum error, type chacha20_poly1305_128: got aad7ace3ab767921e3869078289ebb53 should be abbf307d6f4195551a4398bf111cbb27, fixing bcachefs (loop0): btree_node_read_work: rewriting btree node at due to error btree=dirents level=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 bcachefs (loop0): 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 e3bf1181349cdeb4aace720e90613007 should be 61ec379a8789477e76ff1a5280fd6dbd, fixing bcachefs (loop0): invalid bkey in btree_node btree=alloc level=0: u64s 11 type alloc_v4 0:124:0 len 0 ver 0: gen 0 oldest_gen 0 data_type sb journal_seq_nonempty 1 journal_seq_empty 0 need_discard 1 need_inc_gen 1 dirty_sectors 256 stripe_sectors 0 cached_sectors 0 stripe 1261068201 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 9439544818968559617 fragmentation 0 bp_start 8 invalid data type (got 1 should be 7), deleting bcachefs (loop0): btree_node_read_work: rewriting btree node at due to error btree=alloc level=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 ================================================================== BUG: KASAN: use-after-free in poly1305_update include/crypto/poly1305.h:83 [inline] BUG: KASAN: use-after-free in bch2_checksum+0x238/0x640 fs/bcachefs/checksum.c:157 Read of size 8 at addr ffff8880554a0090 by task syz.0.0/5324 CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00278-gfc96b232f8e7 #0 PREEMPT(full) 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 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x28f/0x2a0 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 poly1305_update include/crypto/poly1305.h:83 [inline] bch2_checksum+0x238/0x640 fs/bcachefs/checksum.c:157 bch2_btree_node_read_done+0x15d5/0x6290 fs/bcachefs/btree_io.c:1102 btree_node_read_work+0x6cb/0x1400 fs/bcachefs/btree_io.c:1366 bch2_btree_node_read+0x2427/0x29e0 fs/bcachefs/btree_io.c:-1 __bch2_btree_root_read fs/bcachefs/btree_io.c:1797 [inline] bch2_btree_root_read+0x656/0x7e0 fs/bcachefs/btree_io.c:1819 read_btree_roots+0x3d7/0xa80 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x28e4/0x3e20 fs/bcachefs/recovery.c:928 bch2_fs_start+0x310/0x620 fs/bcachefs/super.c:1065 bch2_fs_get_tree+0x113e/0x18f0 fs/bcachefs/fs.c:2253 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f605158f90a 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:00007f6052469e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6052469ef0 RCX: 00007f605158f90a RDX: 0000200000000000 RSI: 0000200000000080 RDI: 00007f6052469eb0 RBP: 0000200000000000 R08: 00007f6052469ef0 R09: 0000000000000080 R10: 0000000000000080 R11: 0000000000000246 R12: 0000200000000080 R13: 00007f6052469eb0 R14: 000000000000f624 R15: 0000200000000040 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x554a0 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 dead000000000100 dead000000000122 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_RECLAIMABLE|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5324, tgid 5322 (syz.0.0), ts 69274852833, free_ts 69496971629 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1718 prep_new_page mm/page_alloc.c:1726 [inline] get_page_from_freelist+0x360a/0x37a0 mm/page_alloc.c:3700 __alloc_frozen_pages_noprof+0x211/0x5b0 mm/page_alloc.c:4982 __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:5016 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline] alloc_pages_node_noprof include/linux/gfp.h:311 [inline] ___kmalloc_large_node+0x92/0x210 mm/slub.c:4285 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4313 __do_kmalloc_node mm/slub.c:4329 [inline] __kvmalloc_node_noprof+0x7c/0x5a0 mm/slub.c:5026 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:656 bch2_fs_alloc fs/bcachefs/super.c:943 [inline] bch2_fs_open+0x2dea/0x32a0 fs/bcachefs/super.c:2216 bch2_fs_get_tree+0x77b/0x18f0 fs/bcachefs/fs.c:2172 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 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:1262 [inline] __free_pages_ok+0xb1d/0xda0 mm/page_alloc.c:1438 __folio_put+0x2b5/0x360 mm/swap.c:112 folio_put include/linux/mm.h:1563 [inline] free_large_kmalloc+0x143/0x1e0 mm/slub.c:4781 kfree+0x216/0x430 mm/slub.c:4849 btree_bounce_free fs/bcachefs/btree_io.c:112 [inline] bch2_btree_node_read_done+0x3da2/0x6290 fs/bcachefs/btree_io.c:1245 btree_node_read_work+0x6cb/0x1400 fs/bcachefs/btree_io.c:1366 bch2_btree_node_read+0x2427/0x29e0 fs/bcachefs/btree_io.c:-1 __bch2_btree_root_read fs/bcachefs/btree_io.c:1797 [inline] bch2_btree_root_read+0x656/0x7e0 fs/bcachefs/btree_io.c:1819 read_btree_roots+0x3d7/0xa80 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x28e4/0x3e20 fs/bcachefs/recovery.c:928 bch2_fs_start+0x310/0x620 fs/bcachefs/super.c:1065 bch2_fs_get_tree+0x113e/0x18f0 fs/bcachefs/fs.c:2253 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 Memory state around the buggy address: ffff88805549ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880554a0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff8880554a0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8880554a0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880554a0180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================