syzbot


Internal error in bpf_obj_get_next_id

Status: upstream: reported C repro on 2025/08/09 00:03
Reported-by: syzbot+0ed89b1f3672c4730a43@syzkaller.appspotmail.com
First crash: 5d14h, last: 14h15m

Sample crash report:
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4229 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : bpf_obj_get_next_id+0x204/0x298 kernel/bpf/syscall.c:-1
lr : __uaccess_mask_ptr arch/arm64/include/asm/uaccess.h:244 [inline]
lr : bpf_obj_get_next_id+0x1e4/0x298 kernel/bpf/syscall.c:3397
sp : ffff80001fab7b60
x29: ffff80001fab7bd0 x28: ffff0000d6111b40 x27: 000000000000000b
x26: 1fffe0001ac22368 x25: ffff80001fab7b80 x24: 1ffff00003f56f70
x23: dfff800000000000 x22: 0000000000400140 x21: 0000000000000004
x20: 0000000000000400 x19: 0000000000000001 x18: 0000000000000000
x17: ffff800016d04000 x16: ffff800008522d14 x15: ffff8000167e4500
x14: ffff0000d6112540 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000004 x9 : 0000ffffffffffff
x8 : 0000000000000001 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 00000000fffffff2
Call trace:
 bpf_obj_get_next_id+0x204/0x298 kernel/bpf/syscall.c:3397
 __sys_bpf+0x538/0x5f0 kernel/bpf/syscall.c:-1
 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
 __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:4753
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: d503229f 2a1f03e0 b94043e8 b8000948 (14000003) 
---[ end trace 6c61816b53ed9b16 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03e0 	mov	w0, wzr
   8:	b94043e8 	ldr	w8, [sp, #64]
   c:	b8000948 	sttr	w8, [x10]
* 10:	14000003 	b	0x1c <-- trapping instruction

Crashes (25):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/13 19:44 linux-5.15.y c79648372d02 22ec1469 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 17:29 linux-5.15.y c79648372d02 22ec1469 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 15:11 linux-5.15.y c79648372d02 22ec1469 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/11 13:42 linux-5.15.y c79648372d02 32a0e5ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 11:43 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 11:31 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 11:31 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 11:27 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 11:27 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/13 11:27 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 23:29 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 23:29 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 21:59 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 21:58 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 19:07 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 19:06 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 16:26 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 14:58 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 09:57 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 04:13 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 04:13 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/09 04:11 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/08 23:54 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/08 19:15 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
2025/08/08 19:15 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in bpf_obj_get_next_id
* Struck through repros no longer work on HEAD.