Hello, syzbot found the following issue on: HEAD commit: e8f75c0270d9 Merge tag 'x86_sgx_for_v6.5' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13710670a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=a98ec7f738e43bd4 dashboard link: https://syzkaller.appspot.com/bug?extid=f13a9546e229c1a6e378 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1227af7b280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13803daf280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f27c1d41217a/disk-e8f75c02.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/843ae5d5c810/vmlinux-e8f75c02.xz kernel image: https://storage.googleapis.com/syzbot-assets/da48bc4c0ec1/bzImage-e8f75c02.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/667a76526623/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f13a9546e229c1a6e378@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KASAN: global-out-of-bounds in lookup_object lib/debugobjects.c:195 [inline] BUG: KASAN: global-out-of-bounds in debug_object_deactivate lib/debugobjects.c:785 [inline] BUG: KASAN: global-out-of-bounds in debug_object_deactivate+0x27b/0x300 lib/debugobjects.c:771 Read of size 8 at addr ffffffff8a49cd78 by task kauditd/27 CPU: 1 PID: 27 Comm: kauditd Not tainted 6.4.0-syzkaller-01406-ge8f75c0270d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351 print_report mm/kasan/report.c:462 [inline] kasan_report+0x11c/0x130 mm/kasan/report.c:572 lookup_object lib/debugobjects.c:195 [inline] debug_object_deactivate lib/debugobjects.c:785 [inline] debug_object_deactivate+0x27b/0x300 lib/debugobjects.c:771 debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline] debug_deactivate kernel/time/hrtimer.c:483 [inline] __run_hrtimer kernel/time/hrtimer.c:1656 [inline] __hrtimer_run_queues+0x3f3/0xbe0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline] __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1109 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200 Code: 66 d4 8f 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 3d 3a 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffffc90000a3faa8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000000000 RDX: ffff88801724bb80 RSI: ffffffff81686965 RDI: 0000000000000007 RBP: ffffffff8d26a498 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000200 R11: 205d373254202020 R12: 0000000000000000 R13: ffffffff8d26a440 R14: dffffc0000000000 R15: 0000000000000001 console_emit_next_record arch/x86/include/asm/irqflags.h:42 [inline] console_flush_all+0x61b/0xcc0 kernel/printk/printk.c:2933 console_unlock+0xb8/0x1f0 kernel/printk/printk.c:3007 vprintk_emit+0x1bd/0x600 kernel/printk/printk.c:2307 vprintk+0x84/0xa0 kernel/printk/printk_safe.c:50 _printk+0xbf/0xf0 kernel/printk/printk.c:2328 kauditd_printk_skb kernel/audit.c:536 [inline] kauditd_hold_skb+0x1fb/0x240 kernel/audit.c:571 kauditd_send_queue+0x220/0x280 kernel/audit.c:756 kauditd_thread+0x617/0xaa0 kernel/audit.c:880 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> The buggy address belongs to the variable: ds.0+0x218/0x580 The buggy address belongs to the physical page: page:ffffea0000292700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa49c flags: 0xfff00000001000(reserved|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000001000 ffffea0000292708 ffffea0000292708 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffffffff8a49cc00: f9 f9 f9 f9 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9 ffffffff8a49cc80: 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 05 f9 f9 >ffffffff8a49cd00: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 01 f9 ^ ffffffff8a49cd80: f9 f9 f9 f9 00 00 00 00 00 00 00 00 06 f9 f9 f9 ffffffff8a49ce00: f9 f9 f9 f9 00 00 00 03 f9 f9 f9 f9 00 00 00 00 ================================================================== ---------------- Code disassembly (best guess): 0: 66 d4 data16 (bad) 2: 8f 02 popq (%rdx) 4: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) a: f3 0f 1e fa endbr64 e: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi 15: e8 b0 ff ff ff callq 0xffffffca 1a: 31 c0 xor %eax,%eax 1c: c3 retq 1d: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 24: 00 00 00 00 28: 66 90 xchg %ax,%ax * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 65 8b 05 3d 3a 7f 7e mov %gs:0x7e7f3a3d(%rip),%eax # 0x7e7f3a72 35: 89 c1 mov %eax,%ecx 37: 48 8b 34 24 mov (%rsp),%rsi 3b: 81 .byte 0x81 3c: e1 00 loope 0x3e 3e: 01 00 add %eax,(%rax) --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
