Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [ocfs2?] KASAN: slab-out-of-bounds Read in ocfs2_dx_dir_lookup_rec | 0 (1) | 2024/11/28 09:44 |
syzbot |
sign-in | mailing list | source | docs |
Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [ocfs2?] KASAN: slab-out-of-bounds Read in ocfs2_dx_dir_lookup_rec | 0 (1) | 2024/11/28 09:44 |
loop0: detected capacity change from 32768 to 32767 ================================================================== BUG: KASAN: slab-out-of-bounds in ocfs2_dx_dir_lookup_rec+0x206/0x810 fs/ocfs2/dir.c:805 Read of size 4 at addr ffff88801181b2c0 by task syz.0.0/5107 CPU: 0 UID: 0 PID: 5107 Comm: syz.0.0 Not tainted 6.12.0-rc3-syzkaller-00044-g2f87d0916ce0 #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: <TASK> __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:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ocfs2_dx_dir_lookup_rec+0x206/0x810 fs/ocfs2/dir.c:805 ocfs2_dx_dir_lookup+0x163/0x930 fs/ocfs2/dir.c:860 ocfs2_dx_dir_search fs/ocfs2/dir.c:920 [inline] ocfs2_find_entry_dx fs/ocfs2/dir.c:1034 [inline] ocfs2_find_entry+0x1338/0x2780 fs/ocfs2/dir.c:1070 ocfs2_find_files_on_disk+0xff/0x360 fs/ocfs2/dir.c:1981 ocfs2_lookup_ino_from_name+0xb1/0x1e0 fs/ocfs2/dir.c:2003 ocfs2_lookup+0x292/0xa60 fs/ocfs2/namei.c:122 lookup_open fs/namei.c:3573 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x11a7/0x3590 fs/namei.c:3930 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1441 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: 0033:0x7fefd797dff9 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:00007fefd881f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fefd7b36058 RCX: 00007fefd797dff9 RDX: 000000000000275a RSI: 0000000020000280 RDI: ffffffffffffff9c RBP: 00007fefd79f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fefd7b36058 R15: 00007ffe17f0ea68 </TASK> Allocated by task 5105: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141 getname_flags+0xb7/0x540 fs/namei.c:139 getname fs/namei.c:225 [inline] __do_sys_symlinkat fs/namei.c:4657 [inline] __se_sys_symlinkat fs/namei.c:4654 [inline] __x64_sys_symlinkat+0x87/0xb0 fs/namei.c:4654 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 5105: 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:579 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:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kmem_cache_free+0x1a2/0x420 mm/slub.c:4681 do_symlinkat+0x34c/0x3a0 fs/namei.c:4649 __do_sys_symlinkat fs/namei.c:4657 [inline] __se_sys_symlinkat fs/namei.c:4654 [inline] __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4654 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 ffff88801181a200 which belongs to the cache names_cache of size 4096 The buggy address is located 192 bytes to the right of allocated 4096-byte region [ffff88801181a200, ffff88801181b200) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11818 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff888030407780 ffffea000046a400 dead000000000002 raw: 0000000000000000 0000000000070007 00000001f5000000 0000000000000000 head: 00fff00000000040 ffff888030407780 ffffea000046a400 dead000000000002 head: 0000000000000000 0000000000070007 00000001f5000000 0000000000000000 head: 00fff00000000003 ffffea0000460601 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5023, tgid 5023 (rm), ts 59547676990, free_ts 44085069973 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1545 [inline] get_page_from_freelist+0x3045/0x3190 mm/page_alloc.c:3457 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x120 mm/slub.c:2412 allocate_slab+0x5a/0x2f0 mm/slub.c:2578 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4141 getname_flags+0xb7/0x540 fs/namei.c:139 user_path_at+0x24/0x60 fs/namei.c:3015 user_statfs+0xd6/0x460 fs/statfs.c:103 __do_sys_statfs fs/statfs.c:195 [inline] __se_sys_statfs fs/statfs.c:192 [inline] __x64_sys_statfs+0xe8/0x1a0 fs/statfs.c:192 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 4795 tgid 4795 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1108 [inline] free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638 __slab_free+0x31b/0x3d0 mm/slub.c:4490 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:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x1a6/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] tomoyo_add_entry security/tomoyo/common.c:2023 [inline] tomoyo_supervisor+0xe0d/0x11f0 security/tomoyo/common.c:2095 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission+0x243/0x360 security/tomoyo/file.c:587 tomoyo_check_open_permission+0x2fb/0x500 security/tomoyo/file.c:777 security_bprm_check+0x86/0x250 security/security.c:1297 search_binary_handler fs/exec.c:1740 [inline] exec_binprm fs/exec.c:1794 [inline] bprm_execve+0xa56/0x1770 fs/exec.c:1845 do_execveat_common+0x55f/0x6f0 fs/exec.c:1952 do_execve fs/exec.c:2026 [inline] __do_sys_execve fs/exec.c:2102 [inline] __se_sys_execve fs/exec.c:2097 [inline] __x64_sys_execve+0x92/0xb0 fs/exec.c:2097 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 Memory state around the buggy address: ffff88801181b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801181b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88801181b280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88801181b300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801181b380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/10/16 16:04 | upstream | 2f87d0916ce0 | bde2d81c | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-out-of-bounds Read in ocfs2_dx_dir_lookup_rec | |||
2024/12/09 15:55 | upstream | fac04efc5c79 | 9ac0fdc6 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/12/08 07:00 | upstream | 7503345ac5f5 | 9ac0fdc6 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/12/05 16:58 | upstream | feffde684ac2 | 1c533826 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/11/28 19:30 | upstream | b86545e02e8c | 5df23865 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/11/28 14:04 | upstream | b86545e02e8c | 5df23865 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/11/28 09:43 | upstream | b86545e02e8c | 5df23865 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/11/28 06:01 | upstream | b86545e02e8c | 5df23865 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/11/27 18:57 | upstream | aaf20f870da0 | 5df23865 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec | |||
2024/11/22 14:23 | upstream | 28eb75e178d3 | 68da6d95 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | general protection fault in ocfs2_dx_dir_lookup_rec |