Extracting prog: 38.386216015s
Minimizing prog: 12m0.054401768s
Simplifying prog options: 0s
Extracting C: 1m18.521825034s
Simplifying C: 11m22.564031878s


extracting reproducer from 44 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, &(0x7f0000000440)={0x0, 0x0, 0x2, 0x2, 0xe9}, &(0x7f0000000380), &(0x7f0000000400))
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_UNREGISTER_PERSONALITY(r0, 0xa, 0x0, 0x0)

program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_REGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, &(0x7f0000000440)={0x0, 0x0, 0x2, 0x2, 0xe9}, &(0x7f0000000380), &(0x7f0000000400))
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)

program did not crash
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, &(0x7f0000000440)={0x0, 0x0, 0x2, 0x2, 0xe9}, &(0x7f0000000380), &(0x7f0000000400))
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_UNREGISTER_PERSONALITY(r0, 0xa, 0x0, 0x0)

program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, &(0x7f0000000440)={0x0, 0x0, 0x2, 0x2, 0xe9}, &(0x7f0000000380), &(0x7f0000000400))
io_uring_register$IORING_UNREGISTER_PERSONALITY(r0, 0xa, 0x0, 0x0)

program did not crash
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
io_uring_register$IORING_REGISTER_PERSONALITY(0xffffffffffffffff, 0x9, 0x0, 0x0)
io_uring_register$IORING_UNREGISTER_PERSONALITY(0xffffffffffffffff, 0xa, 0x0, 0x0)

program did not crash
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, 0x0, &(0x7f0000000380), &(0x7f0000000400))
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_UNREGISTER_PERSONALITY(r0, 0xa, 0x0, 0x0)

program did not crash
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, &(0x7f0000000440)={0x0, 0x0, 0x2, 0x2, 0xe9}, 0x0, &(0x7f0000000400))
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_UNREGISTER_PERSONALITY(r0, 0xa, 0x0, 0x0)

program did not crash
testing program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x371d, &(0x7f0000000440)={0x0, 0x0, 0x2, 0x2, 0xe9}, &(0x7f0000000380), 0x0)
io_uring_register$IORING_REGISTER_PERSONALITY(r0, 0x9, 0x0, 0x0)
io_uring_register$IORING_UNREGISTER_PERSONALITY(r0, 0xa, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
simplifying C reproducer
testing compiled C program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing compiled C program (duration=49.61999251s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing compiled C program (duration=49.61999251s, {Threaded:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing compiled C program (duration=49.61999251s, {Threaded:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing compiled C program (duration=49.61999251s, {Threaded:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing compiled C program (duration=49.61999251s, {Threaded:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
testing compiled C program (duration=49.61999251s, {Threaded:false 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:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-io_uring_register$IORING_REGISTER_PERSONALITY-io_uring_register$IORING_UNREGISTER_PERSONALITY
program crashed: KASAN: null-ptr-deref Write in sys_io_uring_register
reproducing took 25m19.526496148s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_long_sub_and_test include/linux/atomic/atomic-instrumented.h:4521 [inline]
BUG: KASAN: null-ptr-deref in put_cred_many include/linux/cred.h:255 [inline]
BUG: KASAN: null-ptr-deref in put_cred include/linux/cred.h:269 [inline]
BUG: KASAN: null-ptr-deref in io_unregister_personality io_uring/register.c:82 [inline]
BUG: KASAN: null-ptr-deref in __io_uring_register io_uring/register.c:698 [inline]
BUG: KASAN: null-ptr-deref in __do_sys_io_uring_register io_uring/register.c:902 [inline]
BUG: KASAN: null-ptr-deref in __se_sys_io_uring_register+0x1227/0x3b60 io_uring/register.c:879
Write of size 8 at addr 0000000000000406 by task syz-executor335/5824

CPU: 1 UID: 0 PID: 5824 Comm: syz-executor335 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_report+0xe8/0x550 mm/kasan/report.c:492
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_long_sub_and_test include/linux/atomic/atomic-instrumented.h:4521 [inline]
 put_cred_many include/linux/cred.h:255 [inline]
 put_cred include/linux/cred.h:269 [inline]
 io_unregister_personality io_uring/register.c:82 [inline]
 __io_uring_register io_uring/register.c:698 [inline]
 __do_sys_io_uring_register io_uring/register.c:902 [inline]
 __se_sys_io_uring_register+0x1227/0x3b60 io_uring/register.c:879
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5de7b0e3a9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff6a7ab3c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 000000000000371d RCX: 00007f5de7b0e3a9
RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000003
RBP: 0000000000000003 R08: 00000000000ac5f8 R09: 00000000000ac5f8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff6a7ab598 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_long_sub_and_test include/linux/atomic/atomic-instrumented.h:4521 [inline]
BUG: KASAN: null-ptr-deref in put_cred_many include/linux/cred.h:255 [inline]
BUG: KASAN: null-ptr-deref in put_cred include/linux/cred.h:269 [inline]
BUG: KASAN: null-ptr-deref in io_unregister_personality io_uring/register.c:82 [inline]
BUG: KASAN: null-ptr-deref in __io_uring_register io_uring/register.c:698 [inline]
BUG: KASAN: null-ptr-deref in __do_sys_io_uring_register io_uring/register.c:902 [inline]
BUG: KASAN: null-ptr-deref in __se_sys_io_uring_register+0x1227/0x3b60 io_uring/register.c:879
Write of size 8 at addr 0000000000000406 by task syz-executor335/5824

CPU: 1 UID: 0 PID: 5824 Comm: syz-executor335 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_report+0xe8/0x550 mm/kasan/report.c:492
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_long_sub_and_test include/linux/atomic/atomic-instrumented.h:4521 [inline]
 put_cred_many include/linux/cred.h:255 [inline]
 put_cred include/linux/cred.h:269 [inline]
 io_unregister_personality io_uring/register.c:82 [inline]
 __io_uring_register io_uring/register.c:698 [inline]
 __do_sys_io_uring_register io_uring/register.c:902 [inline]
 __se_sys_io_uring_register+0x1227/0x3b60 io_uring/register.c:879
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5de7b0e3a9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff6a7ab3c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 000000000000371d RCX: 00007f5de7b0e3a9
RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000003
RBP: 0000000000000003 R08: 00000000000ac5f8 R09: 00000000000ac5f8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff6a7ab598 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
==================================================================