================================================================== BUG: KASAN: slab-out-of-bounds in ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1445 [inline] BUG: KASAN: slab-out-of-bounds in ocfs2_claim_suballoc_bits+0x10d3/0x2560 fs/ocfs2/suballoc.c:1982 Read of size 4 at addr ffff888057a9f040 by task syz.5.901/8841 CPU: 1 UID: 0 PID: 8841 Comm: syz.5.901 Not tainted 6.13.0-rc2-syzkaller-00031-gf92f4749861b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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 ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1445 [inline] ocfs2_claim_suballoc_bits+0x10d3/0x2560 fs/ocfs2/suballoc.c:1982 ocfs2_claim_metadata+0x16d/0x580 fs/ocfs2/suballoc.c:2057 ocfs2_dx_dir_attach_index+0x231/0xf90 fs/ocfs2/dir.c:2308 ocfs2_expand_inline_dir fs/ocfs2/dir.c:3000 [inline] ocfs2_extend_dir+0x439f/0x53c0 fs/ocfs2/dir.c:3182 ocfs2_prepare_dir_for_insert+0x33b5/0x5c40 fs/ocfs2/dir.c:4287 ocfs2_mknod+0xcaf/0x2b30 fs/ocfs2/namei.c:294 ocfs2_create+0x1ab/0x470 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3649 [inline] open_last_lookups fs/namei.c:3748 [inline] path_openat+0x1c03/0x3590 fs/namei.c:3984 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_creat fs/open.c:1495 [inline] __se_sys_creat fs/open.c:1489 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1489 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: 0033:0x7f110917ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1109f25058 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f1109345fa0 RCX: 00007f110917ff19 RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000020000100 RBP: 00007f11091f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1109345fa0 R15: 00007ffd56215b08 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x57a9c head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000040 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 head: 00fff00000000040 0000000000000000 dead000000000122 0000000000000000 head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 head: 00fff00000000002 ffffea00015ea701 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0x446dc0(GFP_KERNEL_ACCOUNT|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_COMP|__GFP_ZERO), pid 6964, tgid 6964 (syz-executor), ts 282666695382, free_ts 282599313139 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4228 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4255 __do_kmalloc_node mm/slub.c:4271 [inline] __kmalloc_node_noprof+0x33a/0x4d0 mm/slub.c:4289 __kvmalloc_node_noprof+0x72/0x190 mm/util.c:650 alloc_netdev_mqs+0xa4/0x1080 net/core/dev.c:11209 ieee80211_if_add+0x336/0x14f0 net/mac80211/iface.c:2107 ieee80211_register_hw+0x3219/0x3e10 net/mac80211/main.c:1594 mac80211_hwsim_new_radio+0x2a9f/0x4a90 drivers/net/wireless/virtual/mac80211_hwsim.c:5519 hwsim_new_radio_nl+0xece/0x2290 drivers/net/wireless/virtual/mac80211_hwsim.c:6203 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2542 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1347 page last free pid 974 tgid 974 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd2c/0x1000 mm/page_alloc.c:2657 vfree+0x186/0x2e0 mm/vmalloc.c:3382 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3303 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff888057a9ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888057a9ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888057a9f000: 00 00 00 00 00 00 00 00 fe fe fe fe fe fe fe fe ^ ffff888057a9f080: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ffff888057a9f100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ==================================================================