Extracting prog: 1m27.364026977s
Minimizing prog: 47.02µs
Simplifying prog options: 6m44.469038215s
Extracting C: 1m1.088115871s
Simplifying C: 0s


extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_rseq
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
extracting C reproducer
testing compiled C program (duration=45.182876812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
program did not crash
simplifying guilty program options
testing program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_rseq
extracting C reproducer
testing compiled C program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
program did not crash
testing program (duration=45.182876812s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
testing program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_rseq
extracting C reproducer
testing compiled C program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
program did not crash
testing program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_mount
validation run: crashed=true
testing program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_rseq
validation run: crashed=true
testing program (duration=45.182876812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rseq
detailed listing:
executing program 0:
rseq(0x0, 0x20, 0x0, 0x0)

program crashed: Internal error in sys_rseq
validation run: crashed=true
reproducing took 12m51.202114884s
repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4252 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 : rseq_get_rseq_cs_ptr_val kernel/rseq.c:131 [inline]
pc : __do_sys_rseq kernel/rseq.c:408 [inline]
pc : __se_sys_rseq kernel/rseq.c:350 [inline]
pc : __arm64_sys_rseq+0x408/0x75c kernel/rseq.c:350
lr : rseq_get_rseq_cs_ptr_val kernel/rseq.c:131 [inline]
lr : __do_sys_rseq kernel/rseq.c:408 [inline]
lr : __se_sys_rseq kernel/rseq.c:350 [inline]
lr : __arm64_sys_rseq+0x3e4/0x75c kernel/rseq.c:350
sp : ffff80001fe07d10
x29: ffff80001fe07d20 x28: ffff0000d87e8000 x27: 0000000000000800
x26: 1fffe0001b0fd28d x25: dfff800000000000 x24: 00000000fffffff2
x23: 0000000000000000 x22: ffff0000d87e9468 x21: ffff0000d87e8000
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008659874 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000008 x9 : 0000ffffffffffff
x8 : 0000000000000008 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 rseq_get_rseq_cs_ptr_val kernel/rseq.c:131 [inline]
 __do_sys_rseq kernel/rseq.c:408 [inline]
 __se_sys_rseq kernel/rseq.c:350 [inline]
 __arm64_sys_rseq+0x408/0x75c kernel/rseq.c:350
 __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 2a1f03f8 2a1f03e0 f8400957 (2a1803e1) 
---[ end trace 1796803e37c044fb ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f8 	mov	w24, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	f8400957 	ldtr	x23, [x10]
* 10:	2a1803e1 	mov	w1, w24 <-- trapping instruction

final repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4252 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 : rseq_get_rseq_cs_ptr_val kernel/rseq.c:131 [inline]
pc : __do_sys_rseq kernel/rseq.c:408 [inline]
pc : __se_sys_rseq kernel/rseq.c:350 [inline]
pc : __arm64_sys_rseq+0x408/0x75c kernel/rseq.c:350
lr : rseq_get_rseq_cs_ptr_val kernel/rseq.c:131 [inline]
lr : __do_sys_rseq kernel/rseq.c:408 [inline]
lr : __se_sys_rseq kernel/rseq.c:350 [inline]
lr : __arm64_sys_rseq+0x3e4/0x75c kernel/rseq.c:350
sp : ffff80001fe07d10
x29: ffff80001fe07d20 x28: ffff0000d87e8000 x27: 0000000000000800
x26: 1fffe0001b0fd28d x25: dfff800000000000 x24: 00000000fffffff2
x23: 0000000000000000 x22: ffff0000d87e9468 x21: ffff0000d87e8000
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008659874 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000008 x9 : 0000ffffffffffff
x8 : 0000000000000008 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 rseq_get_rseq_cs_ptr_val kernel/rseq.c:131 [inline]
 __do_sys_rseq kernel/rseq.c:408 [inline]
 __se_sys_rseq kernel/rseq.c:350 [inline]
 __arm64_sys_rseq+0x408/0x75c kernel/rseq.c:350
 __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 2a1f03f8 2a1f03e0 f8400957 (2a1803e1) 
---[ end trace 1796803e37c044fb ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f8 	mov	w24, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	f8400957 	ldtr	x23, [x10]
* 10:	2a1803e1 	mov	w1, w24 <-- trapping instruction