================================================================== BUG: KASAN: slab-out-of-bounds in ocfs2_get_system_file_inode+0x1cb/0x840 fs/ocfs2/sysfile.c:102 Read of size 8 at addr ffff8880121e3b48 by task syz.0.0/5319 CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.14.0-rc3-syzkaller #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 ocfs2_get_system_file_inode+0x1cb/0x840 fs/ocfs2/sysfile.c:102 ocfs2_xattr_free_block fs/ocfs2/xattr.c:2517 [inline] ocfs2_xattr_remove+0xac4/0x18d0 fs/ocfs2/xattr.c:2600 ocfs2_wipe_inode fs/ocfs2/inode.c:820 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ocfs2_evict_inode+0x1f5e/0x4630 fs/ocfs2/inode.c:1230 evict+0x4e8/0x9a0 fs/inode.c:796 ocfs2_dentry_iput+0x232/0x380 fs/ocfs2/dcache.c:407 __dentry_kill+0x20d/0x630 fs/dcache.c:643 dput+0x19f/0x2b0 fs/dcache.c:885 __fput+0x60b/0x9f0 fs/file_table.c:472 task_work_run+0x24f/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb48a78cde9 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:00007ffedc7a6ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000010c75 RCX: 00007fb48a78cde9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fb48a9a7ba0 R08: 0000000000000001 R09: 0000001edc7a6ddf R10: 00007fb48a5ff040 R11: 0000000000000246 R12: 00007fb48a9a5fac R13: 00007fb48a9a5fa0 R14: ffffffffffffffff R15: 00007ffedc7a6c00 Allocated by task 5303: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4294 [inline] __kmalloc_node_track_caller_noprof+0x28b/0x4c0 mm/slub.c:4313 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:609 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1331 [inline] netlink_dump+0x1ee/0xe10 net/netlink/af_netlink.c:2284 __netlink_dump_start+0x5a2/0x790 net/netlink/af_netlink.c:2433 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:1076 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1192 [inline] genl_rcv_msg+0x894/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2543 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 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 Freed by task 5303: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4609 [inline] kfree+0x196/0x430 mm/slub.c:4757 skb_kfree_head net/core/skbuff.c:1086 [inline] skb_free_head net/core/skbuff.c:1098 [inline] skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1125 skb_release_all net/core/skbuff.c:1190 [inline] __kfree_skb net/core/skbuff.c:1204 [inline] consume_skb+0x9f/0xf0 net/core/skbuff.c:1436 netlink_recvmsg+0x632/0x11a0 net/netlink/af_netlink.c:1970 sock_recvmsg_nosec net/socket.c:1023 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1045 __sys_recvfrom+0x202/0x380 net/socket.c:2237 __do_sys_recvfrom net/socket.c:2252 [inline] __se_sys_recvfrom net/socket.c:2248 [inline] __x64_sys_recvfrom+0xde/0x100 net/socket.c:2248 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 The buggy address belongs to the object at ffff8880121e0000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 6984 bytes to the right of allocated 8192-byte region [ffff8880121e0000, ffff8880121e2000) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880121e0000 pfn:0x121e0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 ksm flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801b042280 ffffea0000fc1a00 dead000000000003 raw: ffff8880121e0000 0000000000020001 00000000f5000000 0000000000000000 head: 00fff00000000040 ffff88801b042280 ffffea0000fc1a00 dead000000000003 head: ffff8880121e0000 0000000000020001 00000000f5000000 0000000000000000 head: 00fff00000000003 ffffea0000487801 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4704, tgid 4704 (init), ts 23677118061, free_ts 23132095136 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_mpol+0x311/0x660 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2587 new_slab mm/slub.c:2640 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826 __slab_alloc+0x58/0xa0 mm/slub.c:3916 __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] __kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4320 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] tomoyo_print_bprm security/tomoyo/audit.c:26 [inline] tomoyo_init_log+0x11f4/0x20d0 security/tomoyo/audit.c:264 tomoyo_supervisor+0x3b2/0x1860 security/tomoyo/common.c:2198 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] tomoyo_env_perm+0x178/0x210 security/tomoyo/environ.c:63 tomoyo_environ security/tomoyo/domain.c:672 [inline] tomoyo_find_next_domain+0x1495/0x1dd0 security/tomoyo/domain.c:888 tomoyo_bprm_check_security+0x117/0x180 security/tomoyo/tomoyo.c:102 security_bprm_check+0x86/0x250 security/security.c:1302 search_binary_handler fs/exec.c:1765 [inline] exec_binprm fs/exec.c:1807 [inline] bprm_execve+0x8d3/0x1430 fs/exec.c:1859 do_execveat_common+0x57f/0x710 fs/exec.c:1966 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660 free_reserved_page+0xcc/0x120 mm/page_alloc.c:5737 free_reserved_area+0x51/0xf0 mm/page_alloc.c:5723 free_init_pages arch/x86/mm/init.c:932 [inline] free_kernel_image_pages arch/x86/mm/init.c:948 [inline] free_initmem+0x9a/0x110 arch/x86/mm/init.c:975 kernel_init+0x31/0x2b0 init/main.c:1466 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff8880121e3a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880121e3a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880121e3b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880121e3b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880121e3c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================