loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names bcachefs (loop0): recovering from clean shutdown, journal seq 13 bcachefs (loop0): Version upgrade required: Version upgrade from 0.19: freespace to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.19: freespace to 1.13: inode_has_child_snapshots running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance ================================================================== BUG: KASAN: stack-out-of-bounds in sg_mark_end include/linux/scatterlist.h:258 [inline] BUG: KASAN: stack-out-of-bounds in do_encrypt+0xa22/0xd70 fs/bcachefs/checksum.c:157 Read of size 8 at addr ffffc900019de908 by task syz.0.0/5316 CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted 6.13.0-rc7-syzkaller-00043-g619f0b6fad52 #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:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 sg_mark_end include/linux/scatterlist.h:258 [inline] do_encrypt+0xa22/0xd70 fs/bcachefs/checksum.c:157 bset_encrypt fs/bcachefs/btree_io.h:118 [inline] bch2_btree_node_read_done+0x1dfc/0x5e90 fs/bcachefs/btree_io.c:1070 btree_node_read_work+0x68b/0x1260 fs/bcachefs/btree_io.c:1323 bch2_btree_node_read+0x2433/0x29f0 __bch2_btree_root_read fs/bcachefs/btree_io.c:1749 [inline] bch2_btree_root_read+0x617/0x7a0 fs/bcachefs/btree_io.c:1771 read_btree_roots+0x296/0x840 fs/bcachefs/recovery.c:523 bch2_fs_recovery+0x2585/0x39d0 fs/bcachefs/recovery.c:853 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1037 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3511 do_mount fs/namespace.c:3851 [inline] __do_sys_mount fs/namespace.c:4061 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4038 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: 0033:0x7ffa4eb874ca 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:00007ffa4f8f9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffa4f8f9ef0 RCX: 00007ffa4eb874ca RDX: 000000002000f640 RSI: 000000002000f680 RDI: 00007ffa4f8f9eb0 RBP: 000000002000f640 R08: 00007ffa4f8f9ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000002000f680 R13: 00007ffa4f8f9eb0 R14: 000000000000f62e R15: 00000000200000c0 The buggy address belongs to stack of task syz.0.0/5316 and is located at offset 1768 in frame: do_encrypt+0x0/0xd70 This frame has 8 objects: [32, 48) 'nonce.i242' [64, 528) '__req_desc.i243' [592, 608) 'nonce.i224' [624, 1088) '__req_desc.i225' [1152, 1168) 'nonce.i' [1184, 1648) '__req_desc.i' [1712, 1744) 'sg' [1776, 1928) 'sgl' The buggy address belongs to the virtual mapping at [ffffc900019d8000, ffffc900019e1000) created by: copy_process+0x5d1/0x3d50 kernel/fork.c:2224 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x43ffe memcg:ffff888042e28782 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff ffff888042e28782 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5314, tgid 5314 (syz.0.0), ts 67493268068, free_ts 67453038703 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269 vm_area_alloc_pages mm/vmalloc.c:3591 [inline] __vmalloc_area_node mm/vmalloc.c:3669 [inline] __vmalloc_node_range_noprof+0x9c9/0x1380 mm/vmalloc.c:3846 alloc_thread_stack_node kernel/fork.c:314 [inline] dup_task_struct+0x444/0x8c0 kernel/fork.c:1116 copy_process+0x5d1/0x3d50 kernel/fork.c:2224 kernel_clone+0x226/0x8e0 kernel/fork.c:2806 __do_sys_clone3 kernel/fork.c:3110 [inline] __se_sys_clone3+0x2d8/0x360 kernel/fork.c:3089 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 page last free pid 5298 tgid 5298 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd3f/0x1010 mm/page_alloc.c:2659 discard_slab mm/slub.c:2688 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3157 put_cpu_partial+0x17c/0x250 mm/slub.c:3232 __slab_free+0x290/0x380 mm/slub.c:4483 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] __kmalloc_cache_node_noprof+0x1ec/0x3a0 mm/slub.c:4337 kmalloc_node_noprof include/linux/slab.h:924 [inline] __get_vm_area_node+0x132/0x2d0 mm/vmalloc.c:3127 __vmalloc_node_range_noprof+0x344/0x1380 mm/vmalloc.c:3806 __vmalloc_node_noprof mm/vmalloc.c:3911 [inline] vzalloc_noprof+0x79/0x90 mm/vmalloc.c:3984 alloc_counters+0xd7/0x740 net/ipv4/netfilter/ip_tables.c:799 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:837 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1039 [inline] do_ip6t_get_ctl+0xecc/0x1820 net/ipv6/netfilter/ip6_tables.c:1677 nf_getsockopt+0x299/0x2c0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x23e/0x360 net/ipv6/ipv6_sockglue.c:1493 tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4671 Memory state around the buggy address: ffffc900019de800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc900019de880: 00 00 f2 f2 f2 f2 f2 f2 f2 f2 00 00 00 00 f2 f2 >ffffc900019de900: f2 f2 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffffc900019de980: 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 ffffc900019dea00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================