Extracting prog: 1m8.7934287s
Minimizing prog: 3m24.055209072s
Simplifying prog options: 2m13.284908027s
Extracting C: 25.393128679s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf
detailed listing:
executing program 0:
openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)

program did not crash
testing program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
ioctl$UDMABUF_CREATE(0xffffffffffffffff, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program did not crash
testing program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, 0x0, 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program did not crash
testing program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program did not crash
simplifying guilty program options
testing program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
extracting C reproducer
testing compiled C program (duration=35.957389794s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program did not crash
testing program (duration=35.957389794s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
extracting C reproducer
testing compiled C program (duration=35.957389794s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program did not crash
testing program (duration=35.957389794s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
testing program (duration=35.957389794s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
testing program (duration=35.957389794s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000001300), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f0000001680)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
reproducing took 9m6.460795054s
repro crashed as (corrupted=false):
------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:6908 at __kvmalloc_node_noprof+0x63c/0x970 mm/slub.c:6908, CPU#3: syz.0.17/5916
Modules linked in:
CPU: 3 UID: 0 PID: 5916 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__kvmalloc_node_noprof+0x63c/0x970 mm/slub.c:6908
Code: c1 e8 f8 07 ff ff 4d 85 f6 0f 85 bb fd ff ff 48 81 fb ff ff ff 7f 0f 86 4f fd ff ff 41 81 e4 00 20 00 00 0f 85 a1 fd ff ff 90 <0f> 0b 90 e9 98 fd ff ff 41 be 10 00 00 00 e9 8d fd ff ff be 40 01
RSP: 0018:ffffc90003057b50 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000008000000000 RCX: 0000008000000000
RDX: 0000000000000000 RSI: ffffffff8c617f00 RDI: ffffffff8e6a8938
RBP: 0000000007ffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000028c0 R14: 0000000000000000 R15: 0000001000000000
FS:  0000000000000000(0000) GS:ffff888096c8f000(0063) knlGS:00000000580cf480
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7113140 CR3: 000000004ef2d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline]
 udmabuf_create+0x2e8/0x12a0 drivers/dma-buf/udmabuf.c:386
 udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:465 [inline]
 udmabuf_ioctl+0x18f/0x300 drivers/dma-buf/udmabuf.c:496
 __do_compat_sys_ioctl fs/ioctl.c:695 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:638 [inline]
 __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
 __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f06fec
Code: Unable to access opcode bytes at 0xf7f06fc2.
RSP: 002b:00000000ff9822fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000040187542
RDX: 0000000080001680 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:6908 at __kvmalloc_node_noprof+0x63c/0x970 mm/slub.c:6908, CPU#3: syz.0.17/5916
Modules linked in:
CPU: 3 UID: 0 PID: 5916 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__kvmalloc_node_noprof+0x63c/0x970 mm/slub.c:6908
Code: c1 e8 f8 07 ff ff 4d 85 f6 0f 85 bb fd ff ff 48 81 fb ff ff ff 7f 0f 86 4f fd ff ff 41 81 e4 00 20 00 00 0f 85 a1 fd ff ff 90 <0f> 0b 90 e9 98 fd ff ff 41 be 10 00 00 00 e9 8d fd ff ff be 40 01
RSP: 0018:ffffc90003057b50 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000008000000000 RCX: 0000008000000000
RDX: 0000000000000000 RSI: ffffffff8c617f00 RDI: ffffffff8e6a8938
RBP: 0000000007ffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000028c0 R14: 0000000000000000 R15: 0000001000000000
FS:  0000000000000000(0000) GS:ffff888096c8f000(0063) knlGS:00000000580cf480
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7113140 CR3: 000000004ef2d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline]
 udmabuf_create+0x2e8/0x12a0 drivers/dma-buf/udmabuf.c:386
 udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:465 [inline]
 udmabuf_ioctl+0x18f/0x300 drivers/dma-buf/udmabuf.c:496
 __do_compat_sys_ioctl fs/ioctl.c:695 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:638 [inline]
 __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
 __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f06fec
Code: Unable to access opcode bytes at 0xf7f06fc2.
RSP: 002b:00000000ff9822fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000040187542
RDX: 0000000080001680 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>