Extracting prog: 2m7.700172281s
Minimizing prog: 7m23.659898382s
Simplifying prog options: 0s
Extracting C: 1m35.09802007s
Simplifying C: 10m46.461650655s


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}}): syz_open_dev$usbmon-mmap-sched_setattr
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program crashed: Internal error in sys_sched_setattr
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=41.42302771s, {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}}): syz_open_dev$usbmon-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)

program did not crash
testing program (duration=41.42302771s, {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}}): syz_open_dev$usbmon-sched_setattr
detailed listing:
executing program 0:
syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program did not crash
testing program (duration=41.42302771s, {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-sched_setattr
detailed listing:
executing program 0:
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, 0xffffffffffffffff, 0x1e67e000)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program did not crash
testing program (duration=41.42302771s, {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}}): syz_open_dev$usbmon-mmap-sched_setattr
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(0x0, 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program did not crash
testing program (duration=41.42302771s, {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}}): syz_open_dev$usbmon-mmap-sched_setattr
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)
sched_setattr(0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=41.42302771s, {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}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_sched_setattr
simplifying C reproducer
testing compiled C program (duration=41.42302771s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
testing compiled C program (duration=41.42302771s, {Threaded:true 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}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_sched_setattr
testing compiled C program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_sched_setattr
testing compiled C program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_sched_setattr
testing compiled C program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_sched_setattr
testing compiled C program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
program did not crash
testing compiled C program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
program crashed: Internal error in sys_sched_setattr
testing program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program crashed: Internal error in sys_sched_setattr
validation run: crashed=true
testing program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program crashed: Internal error in sys_sched_setattr
validation run: crashed=true
testing program (duration=41.42302771s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbmon-mmap-sched_setattr
detailed listing:
executing program 0:
r0 = syz_open_dev$usbmon(&(0x7f00000005c0), 0x0, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x2000001, 0x13, r0, 0x1e67e000)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)

program crashed: Internal error in sys_sched_setattr
validation run: crashed=true
reproducing took 26m43.409521068s
repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4226 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 : sched_copy_attr kernel/sched/core.c:7732 [inline]
pc : __do_sys_sched_setattr kernel/sched/core.c:7819 [inline]
pc : __se_sys_sched_setattr kernel/sched/core.c:7809 [inline]
pc : __arm64_sys_sched_setattr+0x17c/0x6bc kernel/sched/core.c:7809
lr : sched_copy_attr kernel/sched/core.c:7731 [inline]
lr : __do_sys_sched_setattr kernel/sched/core.c:7819 [inline]
lr : __se_sys_sched_setattr kernel/sched/core.c:7809 [inline]
lr : __arm64_sys_sched_setattr+0x100/0x6bc kernel/sched/core.c:7809
sp : ffff80001f9c7c60
x29: ffff80001f9c7d20 x28: 1fffe0001b2126d4 x27: 0000000020000280
x26: 0000000020000280 x25: dfff800000000000 x24: ffff700003f38f90
x23: 0000002000028000 x22: ffff0000d90936a4 x21: 0000000000000000
x20: ffff80001f9c7ca0 x19: ffff0000d9093680 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80000823ab18 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000020000280 x9 : 0000000000000000
x8 : 00000000fffffff2 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : ffff80001131c340 x0 : 0000000000000000
Call trace:
 sched_copy_attr kernel/sched/core.c:7731 [inline]
 __do_sys_sched_setattr kernel/sched/core.c:7819 [inline]
 __se_sys_sched_setattr kernel/sched/core.c:7809 [inline]
 __arm64_sys_sched_setattr+0x17c/0x6bc kernel/sched/core.c:7809
 __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: ea29037f 9a9f034a d503229f b8400949 (350008e8) 
---[ end trace bede6ce1161f86fa ]---
----------------
Code disassembly (best guess):
   0:	ea29037f 	bics	xzr, x27, x9
   4:	9a9f034a 	csel	x10, x26, xzr, eq	// eq = none
   8:	d503229f 	csdb
   c:	b8400949 	ldtr	w9, [x10]
* 10:	350008e8 	cbnz	w8, 0x12c <-- trapping instruction

final repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4226 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 : sched_copy_attr kernel/sched/core.c:7732 [inline]
pc : __do_sys_sched_setattr kernel/sched/core.c:7819 [inline]
pc : __se_sys_sched_setattr kernel/sched/core.c:7809 [inline]
pc : __arm64_sys_sched_setattr+0x17c/0x6bc kernel/sched/core.c:7809
lr : sched_copy_attr kernel/sched/core.c:7731 [inline]
lr : __do_sys_sched_setattr kernel/sched/core.c:7819 [inline]
lr : __se_sys_sched_setattr kernel/sched/core.c:7809 [inline]
lr : __arm64_sys_sched_setattr+0x100/0x6bc kernel/sched/core.c:7809
sp : ffff80001f9c7c60
x29: ffff80001f9c7d20 x28: 1fffe0001b2126d4 x27: 0000000020000280
x26: 0000000020000280 x25: dfff800000000000 x24: ffff700003f38f90
x23: 0000002000028000 x22: ffff0000d90936a4 x21: 0000000000000000
x20: ffff80001f9c7ca0 x19: ffff0000d9093680 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80000823ab18 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000020000280 x9 : 0000000000000000
x8 : 00000000fffffff2 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : ffff80001131c340 x0 : 0000000000000000
Call trace:
 sched_copy_attr kernel/sched/core.c:7731 [inline]
 __do_sys_sched_setattr kernel/sched/core.c:7819 [inline]
 __se_sys_sched_setattr kernel/sched/core.c:7809 [inline]
 __arm64_sys_sched_setattr+0x17c/0x6bc kernel/sched/core.c:7809
 __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: ea29037f 9a9f034a d503229f b8400949 (350008e8) 
---[ end trace bede6ce1161f86fa ]---
----------------
Code disassembly (best guess):
   0:	ea29037f 	bics	xzr, x27, x9
   4:	9a9f034a 	csel	x10, x26, xzr, eq	// eq = none
   8:	d503229f 	csdb
   c:	b8400949 	ldtr	w9, [x10]
* 10:	350008e8 	cbnz	w8, 0x12c <-- trapping instruction