Extracting prog: 1m39.589473794s
Minimizing prog: 4m31.846331262s
Simplifying prog options: 6m12.977760627s
Extracting C: 29.343780562s
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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_waitid
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=45.444968599s, {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}}): mmap
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.444968599s, {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}}): waitid
detailed listing:
executing program 0:
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program did not crash
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.444968599s, {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}}): mmap-waitid
program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
simplifying guilty program options
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_waitid
extracting C reproducer
testing compiled C program (duration=45.444968599s, {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}}): mmap-waitid
program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_waitid
extracting C reproducer
testing compiled C program (duration=45.444968599s, {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}}): mmap-waitid
program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_waitid
validation run: crashed=true
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_mount
validation run: crashed=true
testing program (duration=45.444968599s, {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}}): mmap-waitid
detailed listing:
executing program 0:
mmap(&(0x7f0000003000/0x3000)=nil, 0x3000, 0x0, 0x2172, 0xffffffffffffffff, 0x0)
waitid(0x0, 0x0, &(0x7f0000002ff9), 0x0, 0x0)

program crashed: Internal error in sys_waitid
validation run: crashed=true
reproducing took 19m4.795193545s
repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4239 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 : __do_sys_waitid kernel/exit.c:1705 [inline]
pc : __se_sys_waitid kernel/exit.c:1684 [inline]
pc : __arm64_sys_waitid+0x4d8/0x9bc kernel/exit.c:1684
lr : __do_sys_waitid kernel/exit.c:1705 [inline]
lr : __se_sys_waitid kernel/exit.c:1684 [inline]
lr : __arm64_sys_waitid+0x4b4/0x9bc kernel/exit.c:1684
sp : ffff80001fdf7bc0
x29: ffff80001fdf7d20 x28: 00000020002ffd00 x27: dfff800000000000
x26: ffff700003fbef7c x25: 0000000020002ffd x24: 1fffe0001b18836c
x23: 00000000fffffff2 x22: ffff0000d8c41b64 x21: ffff0000d8c41b40
x20: ffffffffffffffea x19: 0000000020002ff9 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008196c3c x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000020002ffd x9 : 0000ffffffffffff
x8 : 0000000020002ffd x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 __do_sys_waitid kernel/exit.c:1705 [inline]
 __se_sys_waitid kernel/exit.c:1684 [inline]
 __arm64_sys_waitid+0x4d8/0x9bc kernel/exit.c:1684
 __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 b8000957 (2a1703e1) 
---[ end trace 142ecf40a7928258 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f7 	mov	w23, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	b8000957 	sttr	w23, [x10]
* 10:	2a1703e1 	mov	w1, w23 <-- trapping instruction

final repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4239 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 : __do_sys_waitid kernel/exit.c:1705 [inline]
pc : __se_sys_waitid kernel/exit.c:1684 [inline]
pc : __arm64_sys_waitid+0x4d8/0x9bc kernel/exit.c:1684
lr : __do_sys_waitid kernel/exit.c:1705 [inline]
lr : __se_sys_waitid kernel/exit.c:1684 [inline]
lr : __arm64_sys_waitid+0x4b4/0x9bc kernel/exit.c:1684
sp : ffff80001fdf7bc0
x29: ffff80001fdf7d20 x28: 00000020002ffd00 x27: dfff800000000000
x26: ffff700003fbef7c x25: 0000000020002ffd x24: 1fffe0001b18836c
x23: 00000000fffffff2 x22: ffff0000d8c41b64 x21: ffff0000d8c41b40
x20: ffffffffffffffea x19: 0000000020002ff9 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008196c3c x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000020002ffd x9 : 0000ffffffffffff
x8 : 0000000020002ffd x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 __do_sys_waitid kernel/exit.c:1705 [inline]
 __se_sys_waitid kernel/exit.c:1684 [inline]
 __arm64_sys_waitid+0x4d8/0x9bc kernel/exit.c:1684
 __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 b8000957 (2a1703e1) 
---[ end trace 142ecf40a7928258 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f7 	mov	w23, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	b8000957 	sttr	w23, [x10]
* 10:	2a1703e1 	mov	w1, w23 <-- trapping instruction