syzbot


Internal error in sys_capset

Status: upstream: reported on 2025/08/08 15:13
Reported-by: syzbot+eb0a04789ee3bf3a732c@syzkaller.appspotmail.com
First crash: 12d, last: 3d16h

Sample crash report:
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4184 Comm: syz.0.10 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 : __do_sys_capset kernel/capability.c:235 [inline]
pc : __se_sys_capset kernel/capability.c:222 [inline]
pc : __arm64_sys_capset+0x24c/0x7b8 kernel/capability.c:222
lr : __do_sys_capset kernel/capability.c:235 [inline]
lr : __se_sys_capset kernel/capability.c:222 [inline]
lr : __arm64_sys_capset+0x228/0x7b8 kernel/capability.c:222
sp : ffff80001fcc7c00
x29: ffff80001fcc7d20 x28: ffff700003f98f88 x27: 0000000000000000
x26: ffff80001fcc7c40 x25: dfff800000000000 x24: 1fffe0001a28436c
x23: 00000000fffffff2 x22: 0000000000000000 x21: ffff0000d1421b64
x20: ffff80001fcc7c60 x19: 00000020002ffe00 x18: 0000000000000000
x17: 0000000000000002 x16: ffff8000081ae75c x15: 0000000020080522
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000020002ffe x9 : 0000ffffffffffff
x8 : 0000000020002ffe x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 __do_sys_capset kernel/capability.c:235 [inline]
 __se_sys_capset kernel/capability.c:222 [inline]
 __arm64_sys_capset+0x24c/0x7b8 kernel/capability.c:222
 __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 2a1f03f7 2a1f03e0 b8400956 (2a1703e1) 
---[ end trace 69d9ed59ca8047b2 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f7 	mov	w23, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	b8400956 	ldtr	w22, [x10]
* 10:	2a1703e1 	mov	w1, w23 <-- trapping instruction

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/16 23:26 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in sys_capset
2025/08/16 23:24 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in sys_capset
2025/08/09 11:01 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 sys_capset
2025/08/09 10:50 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 sys_capset
2025/08/09 05:43 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 sys_capset
2025/08/09 05:36 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 sys_capset
2025/08/08 15:57 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 sys_capset
2025/08/08 15:54 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 sys_capset
2025/08/08 15:14 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 sys_capset
2025/08/08 15:12 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 sys_capset
2025/08/08 15:12 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 sys_capset
* Struck through repros no longer work on HEAD.