Extracting prog: 1m11.436769015s
Minimizing prog: 29m33.425022409s
Simplifying prog options: 4m16.223465836s
Extracting C: 3m5.688681536s
Simplifying C: 0s


extracting reproducer from 24 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:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT-write$auto-open-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
r3 = socket(0x2, 0x6, 0x0)
ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000180)={'bond_slave_1\x00', <r4=>0x0})
sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT(0xffffffffffffffff, &(0x7f0000021740)={0x0, 0x0, &(0x7f0000021700)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r4], 0x20}, 0x1, 0x0, 0x0, 0x40000}, 0x4004804)
write$auto(r2, &(0x7f0000000000)='@\x00', 0xfe)
open(&(0x7f0000000080)='./file0\x00', 0x8003, 0x40)
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
single: successfully extracted reproducer
found reproducer with 14 syscalls
minimizing guilty program
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT-write$auto-open
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
r3 = socket(0x2, 0x6, 0x0)
ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000180)={'bond_slave_1\x00', <r4=>0x0})
sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT(0xffffffffffffffff, &(0x7f0000021740)={0x0, 0x0, &(0x7f0000021700)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r4], 0x20}, 0x1, 0x0, 0x0, 0x40000}, 0x4004804)
write$auto(r2, &(0x7f0000000000)='@\x00', 0xfe)
open(&(0x7f0000000080)='./file0\x00', 0x8003, 0x40)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT-write$auto-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
r3 = socket(0x2, 0x6, 0x0)
ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000180)={'bond_slave_1\x00', <r4=>0x0})
sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT(0xffffffffffffffff, &(0x7f0000021740)={0x0, 0x0, &(0x7f0000021700)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r4], 0x20}, 0x1, 0x0, 0x0, 0x40000}, 0x4004804)
write$auto(r2, &(0x7f0000000000)='@\x00', 0xfe)
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = socket(0x2, 0x6, 0x0)
ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000180)={'bond_slave_1\x00', <r3=>0x0})
sendmsg$auto_ETHTOOL_MSG_CABLE_TEST_TDR_ACT(0xffffffffffffffff, &(0x7f0000021740)={0x0, 0x0, &(0x7f0000021700)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r3], 0x20}, 0x1, 0x0, 0x0, 0x40000}, 0x4004804)
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-socket-ioctl$sock_SIOCGIFINDEX-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = socket(0x2, 0x6, 0x0)
ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000180)={'bond_slave_1\x00'})
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-socket-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
socket(0x2, 0x6, 0x0)
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-socket$nl_generic-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program crashed: WARNING in remove_proc_entry
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
writev$auto(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
r0 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r0, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
read$auto(0xffffffffffffffff, 0x0, 0x6)
r0 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r0, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, 0x0, 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, 0x0, 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, 0x0, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, 0x0, 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
extracting C reproducer
testing compiled C program (duration=53.272988961s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
program did not crash
simplifying guilty program options
testing program (duration=53.272988961s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program did not crash
testing program (duration=53.272988961s, {Threaded:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_kernfs_file_fops_kernfs_internal-read$auto-openat$auto_proc_fail_nth_operations_base-writev$auto-openat$auto_mousedev_fops_mousedev-openat$auto_proc_sys_file_operations_proc_sysctl-unshare$auto
detailed listing:
executing program 0:
mmap$auto(0x0, 0x4020009, 0xdf, 0xeb1, 0x401, 0x8000)
r0 = openat$auto_kernfs_file_fops_kernfs_internal(0xffffffffffffff9c, &(0x7f0000000380)='/sys/devices/system/cpu/cpu1/hotplug/target\x00', 0x800, 0x0)
read$auto(r0, 0x0, 0x6)
r1 = openat$auto_proc_fail_nth_operations_base(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/fail-nth\x00', 0x802, 0x0)
writev$auto(r1, &(0x7f0000000200)={0x0, 0x7}, 0x3)
openat$auto_mousedev_fops_mousedev(0xffffffffffffff9c, 0x0, 0x2, 0x0)
openat$auto_proc_sys_file_operations_proc_sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/net/ipv6/conf/bridge_slave_1/disable_policy\x00', 0x8000, 0x0)
unshare$auto(0x40000080)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
reproducing took 38m6.773965703s
repro crashed as (corrupted=false):
------------[ cut here ]------------
name 'nfsd'
WARNING: CPU: 0 PID: 6074 at fs/proc/generic.c:713 remove_proc_entry+0x268/0x470 fs/proc/generic.c:713
Modules linked in:
CPU: 0 UID: 0 PID: 6074 Comm: syz.2.18 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:remove_proc_entry+0x268/0x470 fs/proc/generic.c:713
Code: 08 eb a2 e8 1a 9c 62 ff 48 c7 c7 20 7e 41 8e e8 4e d4 f2 08 e8 09 9c 62 ff 90 48 c7 c7 c0 db 81 8b 4c 89 e6 e8 29 76 23 ff 90 <0f> 0b 90 90 e9 72 ff ff ff e8 ea 9b 62 ff 49 8d be 98 00 00 00 48
RSP: 0018:ffffc90003087b90 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 1ffff92000610f74 RCX: ffffffff8179c889
RDX: ffff8880272cda00 RSI: ffffffff8179c896 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8b8f7460
R13: dffffc0000000000 R14: ffff888034873000 R15: fffffbfff1cb7dc4
FS:  00007fc5883f96c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa09f1fdf98 CR3: 0000000078050000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nfsd_net_exit+0x27/0x50 fs/nfsd/nfsctl.c:2259
 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:172
 setup_net+0x4fe/0x860 net/core/net_namespace.c:394
 copy_net_ns+0x2b4/0x6c0 net/core/net_namespace.c:516
 create_new_namespaces+0x3ea/0xad0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
 ksys_unshare+0x45d/0xa40 kernel/fork.c:3342
 __do_sys_unshare kernel/fork.c:3413 [inline]
 __se_sys_unshare kernel/fork.c:3411 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3411
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc58858cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc5883f9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fc5887a5fa0 RCX: 00007fc58858cde9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000080
RBP: 00007fc58860e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc5887a5fa0 R15: 00007ffdd9164708
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
name 'nfsd'
WARNING: CPU: 0 PID: 6074 at fs/proc/generic.c:713 remove_proc_entry+0x268/0x470 fs/proc/generic.c:713
Modules linked in:
CPU: 0 UID: 0 PID: 6074 Comm: syz.2.18 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:remove_proc_entry+0x268/0x470 fs/proc/generic.c:713
Code: 08 eb a2 e8 1a 9c 62 ff 48 c7 c7 20 7e 41 8e e8 4e d4 f2 08 e8 09 9c 62 ff 90 48 c7 c7 c0 db 81 8b 4c 89 e6 e8 29 76 23 ff 90 <0f> 0b 90 90 e9 72 ff ff ff e8 ea 9b 62 ff 49 8d be 98 00 00 00 48
RSP: 0018:ffffc90003087b90 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 1ffff92000610f74 RCX: ffffffff8179c889
RDX: ffff8880272cda00 RSI: ffffffff8179c896 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8b8f7460
R13: dffffc0000000000 R14: ffff888034873000 R15: fffffbfff1cb7dc4
FS:  00007fc5883f96c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa09f1fdf98 CR3: 0000000078050000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nfsd_net_exit+0x27/0x50 fs/nfsd/nfsctl.c:2259
 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:172
 setup_net+0x4fe/0x860 net/core/net_namespace.c:394
 copy_net_ns+0x2b4/0x6c0 net/core/net_namespace.c:516
 create_new_namespaces+0x3ea/0xad0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
 ksys_unshare+0x45d/0xa40 kernel/fork.c:3342
 __do_sys_unshare kernel/fork.c:3413 [inline]
 __se_sys_unshare kernel/fork.c:3411 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3411
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc58858cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc5883f9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fc5887a5fa0 RCX: 00007fc58858cde9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000080
RBP: 00007fc58860e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc5887a5fa0 R15: 00007ffdd9164708
 </TASK>