Extracting prog: 8m37.400975739s
Minimizing prog: 1h17m9.597195727s
Simplifying prog options: 0s
Extracting C: 1m28.905351352s
Simplifying C: 33m12.415658217s


1 programs, 3 VMs, timeouts [15s 1m40s 6m0s]
extracting reproducer from 1 programs
single: executing 1 programs separately with timeout 15s
testing program (duration=15s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability-lsetxattr$security_capability-mknodat-rt_sigreturn-timer_settime
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
mknodat(r0, &(0x7f00000001c0)='./file0/file0\x00', 0x0, 0x0)
rt_sigreturn()
timer_settime(0x0, 0x0, 0x0, 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability-lsetxattr$security_capability-mknodat-rt_sigreturn-timer_settime
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
mknodat(r0, &(0x7f00000001c0)='./file0/file0\x00', 0x0, 0x0)
rt_sigreturn()
timer_settime(0x0, 0x0, 0x0, 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability-lsetxattr$security_capability-mknodat-rt_sigreturn-timer_settime
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
mknodat(r0, &(0x7f00000001c0)='./file0/file0\x00', 0x0, 0x0)
rt_sigreturn()
timer_settime(0x0, 0x0, 0x0, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
single: successfully extracted reproducer
found reproducer with 15 syscalls
minimizing guilty program
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability-lsetxattr$security_capability-mknodat-rt_sigreturn
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
mknodat(r0, &(0x7f00000001c0)='./file0/file0\x00', 0x0, 0x0)
rt_sigreturn()

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability-lsetxattr$security_capability-mknodat
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
mknodat(r0, &(0x7f00000001c0)='./file0/file0\x00', 0x0, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability-lsetxattr$security_capability
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create-lsetxattr$security_capability
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)
lsetxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140), 0x0, 0x0, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat-timer_create
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)
timer_create(0x0, &(0x7f0000000180)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE-creat
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
creat(&(0x7f0000001100)='./file0\x00', 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE-write$FUSE_NOTIFY_RETRIEVE
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script-write$FUSE_NOTIFY_RETRIEVE
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)
write$FUSE_NOTIFY_RETRIEVE(0xffffffffffffffff, 0x0, 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat-write$binfmt_script
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)
write$binfmt_script(0xffffffffffffffff, &(0x7f00000013c0), 0xffffff46)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime-creat
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)
creat(&(0x7f0000000340)='./file0\x00', 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate-utime
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)
utime(&(0x7f00000002c0)='./bus\x00', 0x0)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit-fallocate
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})
fallocate(r0, 0x0, 0x0, 0x7fffffff)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): open-setrlimit
detailed listing:
executing program 0:
open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
setrlimit(0x1, &(0x7f0000000100)={0xffffffff, 0xffffffffffffffff})

program did not crash
testing program (duration=9m0s, {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}}): open-fallocate
detailed listing:
executing program 0:
r0 = open(&(0x7f0000000280)='./bus\x00', 0x105042, 0x0)
fallocate(r0, 0x0, 0x0, 0x7fffffff)

program crashed: KMSAN: uninit-value in virtqueue_add
testing program (duration=9m0s, {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}}): fallocate
detailed listing:
executing program 0:
fallocate(0xffffffffffffffff, 0x0, 0x0, 0x7fffffff)

program did not crash
testing program (duration=9m0s, {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}}): open-fallocate
detailed listing:
executing program 0:
r0 = open(0x0, 0x105042, 0x0)
fallocate(r0, 0x0, 0x0, 0x7fffffff)

program did not crash
extracting C reproducer
testing compiled C program (duration=9m0s, {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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
simplifying C reproducer
testing compiled C program (duration=9m0s, {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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true 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}}): open-fallocate
program did not crash
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true 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}}): open-fallocate
program crashed: KMSAN: uninit-value in virtqueue_add
reproducing took 2h0m28.319202489s
repro crashed as (corrupted=false):
=====================================================
BUG: KMSAN: uninit-value in vring_map_one_sg drivers/virtio/virtio_ring.c:380 [inline]
BUG: KMSAN: uninit-value in virtqueue_add_split drivers/virtio/virtio_ring.c:614 [inline]
BUG: KMSAN: uninit-value in virtqueue_add+0x1e86/0x65c0 drivers/virtio/virtio_ring.c:2210
 vring_map_one_sg drivers/virtio/virtio_ring.c:380 [inline]
 virtqueue_add_split drivers/virtio/virtio_ring.c:614 [inline]
 virtqueue_add+0x1e86/0x65c0 drivers/virtio/virtio_ring.c:2210
 virtqueue_add_sgs+0x186/0x1b0 drivers/virtio/virtio_ring.c:2244
 __virtscsi_add_cmd drivers/scsi/virtio_scsi.c:471 [inline]
 virtscsi_add_cmd+0x838/0xad0 drivers/scsi/virtio_scsi.c:505
 virtscsi_queuecommand+0x898/0xa60 drivers/scsi/virtio_scsi.c:602
 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1609 [inline]
 scsi_queue_rq+0x4cc7/0x5a80 drivers/scsi/scsi_lib.c:1851
 blk_mq_dispatch_rq_list+0x79b/0x3440 block/blk-mq.c:2037
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
 blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
 __blk_mq_sched_dispatch_requests+0x11b7/0x26e0 block/blk-mq-sched.c:309
 blk_mq_sched_dispatch_requests+0x12f/0x270 block/blk-mq-sched.c:331
 blk_mq_run_work_fn+0xd0/0x280 block/blk-mq.c:2420
 process_one_work kernel/workqueue.c:3267 [inline]
 process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348
 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 memcpy_from_iter lib/iov_iter.c:73 [inline]
 iterate_bvec include/linux/iov_iter.h:122 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:249 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 __copy_from_iter lib/iov_iter.c:249 [inline]
 copy_page_from_iter_atomic+0x12b7/0x2ae0 lib/iov_iter.c:481
 generic_perform_write+0x4c1/0xc60 mm/filemap.c:3982
 ext4_buffered_write_iter+0x564/0xaa0 fs/ext4/file.c:299
 ext4_file_write_iter+0x208/0x3450
 __kernel_write_iter+0x64d/0xc80 fs/read_write.c:523
 dump_emit_page fs/coredump.c:895 [inline]
 dump_user_range+0x8dc/0xee0 fs/coredump.c:956
 elf_core_dump+0x57c7/0x5ae0 fs/binfmt_elf.c:2083
 do_coredump+0x32d5/0x4920 fs/coredump.c:769
 get_signal+0x267e/0x2d00 kernel/signal.c:2896
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x5d/0x160 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598
 alloc_pages_mpol+0x299/0x990 mm/mempolicy.c:2264
 alloc_pages+0x1bf/0x1e0 mm/mempolicy.c:2335
 dump_user_range+0x4a/0xee0 fs/coredump.c:940
 elf_core_dump+0x57c7/0x5ae0 fs/binfmt_elf.c:2083
 do_coredump+0x32d5/0x4920 fs/coredump.c:769
 get_signal+0x267e/0x2d00 kernel/signal.c:2896
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x5d/0x160 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Bytes 0-4095 of 4096 are uninitialized
Memory access of size 4096 starts at ffff88812a730000

CPU: 0 PID: 55 Comm: kworker/0:1H Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: kblockd blk_mq_run_work_fn
=====================================================

final repro crashed as (corrupted=false):
=====================================================
BUG: KMSAN: uninit-value in vring_map_one_sg drivers/virtio/virtio_ring.c:380 [inline]
BUG: KMSAN: uninit-value in virtqueue_add_split drivers/virtio/virtio_ring.c:614 [inline]
BUG: KMSAN: uninit-value in virtqueue_add+0x1e86/0x65c0 drivers/virtio/virtio_ring.c:2210
 vring_map_one_sg drivers/virtio/virtio_ring.c:380 [inline]
 virtqueue_add_split drivers/virtio/virtio_ring.c:614 [inline]
 virtqueue_add+0x1e86/0x65c0 drivers/virtio/virtio_ring.c:2210
 virtqueue_add_sgs+0x186/0x1b0 drivers/virtio/virtio_ring.c:2244
 __virtscsi_add_cmd drivers/scsi/virtio_scsi.c:471 [inline]
 virtscsi_add_cmd+0x838/0xad0 drivers/scsi/virtio_scsi.c:505
 virtscsi_queuecommand+0x898/0xa60 drivers/scsi/virtio_scsi.c:602
 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1609 [inline]
 scsi_queue_rq+0x4cc7/0x5a80 drivers/scsi/scsi_lib.c:1851
 blk_mq_dispatch_rq_list+0x79b/0x3440 block/blk-mq.c:2037
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
 blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
 __blk_mq_sched_dispatch_requests+0x11b7/0x26e0 block/blk-mq-sched.c:309
 blk_mq_sched_dispatch_requests+0x12f/0x270 block/blk-mq-sched.c:331
 blk_mq_run_work_fn+0xd0/0x280 block/blk-mq.c:2420
 process_one_work kernel/workqueue.c:3267 [inline]
 process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348
 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 memcpy_from_iter lib/iov_iter.c:73 [inline]
 iterate_bvec include/linux/iov_iter.h:122 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:249 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 __copy_from_iter lib/iov_iter.c:249 [inline]
 copy_page_from_iter_atomic+0x12b7/0x2ae0 lib/iov_iter.c:481
 generic_perform_write+0x4c1/0xc60 mm/filemap.c:3982
 ext4_buffered_write_iter+0x564/0xaa0 fs/ext4/file.c:299
 ext4_file_write_iter+0x208/0x3450
 __kernel_write_iter+0x64d/0xc80 fs/read_write.c:523
 dump_emit_page fs/coredump.c:895 [inline]
 dump_user_range+0x8dc/0xee0 fs/coredump.c:956
 elf_core_dump+0x57c7/0x5ae0 fs/binfmt_elf.c:2083
 do_coredump+0x32d5/0x4920 fs/coredump.c:769
 get_signal+0x267e/0x2d00 kernel/signal.c:2896
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x5d/0x160 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598
 alloc_pages_mpol+0x299/0x990 mm/mempolicy.c:2264
 alloc_pages+0x1bf/0x1e0 mm/mempolicy.c:2335
 dump_user_range+0x4a/0xee0 fs/coredump.c:940
 elf_core_dump+0x57c7/0x5ae0 fs/binfmt_elf.c:2083
 do_coredump+0x32d5/0x4920 fs/coredump.c:769
 get_signal+0x267e/0x2d00 kernel/signal.c:2896
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x5d/0x160 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Bytes 0-4095 of 4096 are uninitialized
Memory access of size 4096 starts at ffff88812a730000

CPU: 0 PID: 55 Comm: kworker/0:1H Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: kblockd blk_mq_run_work_fn
=====================================================