Extracting prog: 1m8.676494306s
Minimizing prog: 2m47.251339135s
Simplifying prog options: 0s
Extracting C: 23.420260557s
Simplifying C: 3m33.827868542s


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$udambuf(0xffffffffffffff9c, &(0x7f0000000040), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f00000002c0)={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=35.178068748s, {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, &(0x7f0000000040), 0x2)

program did not crash
testing program (duration=35.178068748s, {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, &(0x7f00000002c0)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program did not crash
testing program (duration=35.178068748s, {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, &(0x7f00000002c0)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program did not crash
testing program (duration=35.178068748s, {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$udambuf(0xffffffffffffff9c, &(0x7f0000000040), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=35.178068748s, {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 crashed: WARNING in udmabuf_create
simplifying C reproducer
testing compiled C program (duration=35.178068748s, {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 crashed: WARNING in udmabuf_create
testing compiled C program (duration=35.178068748s, {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 crashed: WARNING in udmabuf_create
testing compiled C program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
program crashed: WARNING in udmabuf_create
testing program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000040), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f00000002c0)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
testing program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000040), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f00000002c0)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
testing program (duration=35.178068748s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000040), 0x2)
ioctl$UDMABUF_CREATE(r0, 0x40187542, &(0x7f00000002c0)={0xffffffffffffffff, 0x0, 0x0, 0x1000000000000})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
reproducing took 9m39.215453623s
repro crashed as (corrupted=false):
------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x646/0x9b0 mm/slub.c:7013, CPU#3: syz.0.17/5924
Modules linked in:
CPU: 3 UID: 0 PID: 5924 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+0x646/0x9b0 mm/slub.c:7013
Code: c1 e8 2e 07 ff ff 4d 85 f6 0f 85 b6 fd ff ff 48 81 fb ff ff ff 7f 0f 86 4d fd ff ff 41 81 e4 00 20 00 00 0f 85 9c fd ff ff 90 <0f> 0b 90 e9 93 fd ff ff 41 be 10 00 00 00 e9 88 fd ff ff be 42 01
RSP: 0018:ffffc90005b27b78 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000008000000000 RCX: 0000008000000000
RDX: 0000000000000000 RSI: ffffffff8c620c00 RDI: ffffffff8e6b6938
RBP: 0000000007ffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000028c0 R14: 0000000000000000 R15: 00000000ffffffff
FS:  000055557c7aa500(0000) GS:ffff8880d5e64000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb9fc470050 CR3: 0000000027296000 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
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb9fc59e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcce0cec88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb9fc825fa0 RCX: 00007fb9fc59e159
RDX: 00002000000002c0 RSI: 0000000040187542 RDI: 0000000000000003
RBP: 00007fb9fc635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb9fc825fac R14: 00007fb9fc825fa0 R15: 00007fb9fc825fa0
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x646/0x9b0 mm/slub.c:7013, CPU#3: syz.0.17/5924
Modules linked in:
CPU: 3 UID: 0 PID: 5924 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+0x646/0x9b0 mm/slub.c:7013
Code: c1 e8 2e 07 ff ff 4d 85 f6 0f 85 b6 fd ff ff 48 81 fb ff ff ff 7f 0f 86 4d fd ff ff 41 81 e4 00 20 00 00 0f 85 9c fd ff ff 90 <0f> 0b 90 e9 93 fd ff ff 41 be 10 00 00 00 e9 88 fd ff ff be 42 01
RSP: 0018:ffffc90005b27b78 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000008000000000 RCX: 0000008000000000
RDX: 0000000000000000 RSI: ffffffff8c620c00 RDI: ffffffff8e6b6938
RBP: 0000000007ffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000028c0 R14: 0000000000000000 R15: 00000000ffffffff
FS:  000055557c7aa500(0000) GS:ffff8880d5e64000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb9fc470050 CR3: 0000000027296000 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
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb9fc59e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcce0cec88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb9fc825fa0 RCX: 00007fb9fc59e159
RDX: 00002000000002c0 RSI: 0000000040187542 RDI: 0000000000000003
RBP: 00007fb9fc635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb9fc825fac R14: 00007fb9fc825fa0 R15: 00007fb9fc825fa0
 </TASK>