Extracting prog: 4m14.703015094s
Minimizing prog: 9m19.175289623s
Simplifying prog options: 0s
Extracting C: 42.909750526s
Simplifying C: 9m34.676920834s


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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program did not crash
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: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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program crashed: WARNING in udmabuf_create
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=1m20.019984808s, {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, &(0x7f0000000000), 0x2)

program did not crash
testing program (duration=1m20.019984808s, {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$UDMABUF_CREATE_LIST
detailed listing:
executing program 0:
ioctl$UDMABUF_CREATE_LIST(0xffffffffffffffff, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program did not crash
testing program (duration=1m20.019984808s, {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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, 0x0, 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program did not crash
testing program (duration=1m20.019984808s, {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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, 0x0)

program did not crash
testing program (duration=1m20.019984808s, {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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100))

program did not crash
extracting C reproducer
testing compiled C program (duration=1m20.019984808s, {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_LIST
program crashed: WARNING in udmabuf_create
simplifying C reproducer
testing compiled C program (duration=1m20.019984808s, {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_LIST
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=1m20.019984808s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE_LIST
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=1m20.019984808s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$udambuf-ioctl$UDMABUF_CREATE_LIST
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=1m20.019984808s, {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: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_LIST
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=1m20.019984808s, {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: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_LIST
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=1m20.019984808s, {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: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_LIST
program crashed: WARNING in udmabuf_create
testing compiled C program (duration=1m20.019984808s, {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: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_LIST
program crashed: WARNING in udmabuf_create
testing program (duration=1m20.019984808s, {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: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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
testing program (duration=1m20.019984808s, {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: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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
testing program (duration=1m20.019984808s, {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: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_LIST
detailed listing:
executing program 0:
r0 = openat$udambuf(0xffffffffffffff9c, &(0x7f0000000000), 0x2)
ioctl$UDMABUF_CREATE_LIST(r0, 0x40087543, &(0x7f0000000100)={0x0, 0x3, [{0xffffffffffffffff, 0x0, 0x2000, 0x1000000000000}, {0xffffffffffffffff, 0x0, 0xfffff000, 0xfffff000}, {0xffffffffffffffff, 0x0, 0x1000000, 0x4000}]})

program crashed: WARNING in udmabuf_create
validation run: crashed=true
reproducing took 28m43.993254751s
repro crashed as (corrupted=false):
------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:7144 at __kvmalloc_node_noprof+0x793/0x820 mm/slub.c:7144, CPU#1: syz.0.17/5841
Modules linked in:
CPU: 1 UID: 0 PID: 5841 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__kvmalloc_node_noprof+0x793/0x820 mm/slub.c:7144
Code: ff 48 c7 c7 30 ba 29 90 48 89 de e8 07 71 02 03 e9 1b fc ff ff 48 c7 c7 70 ba 29 90 48 89 de e8 f3 70 02 03 e9 4c fc ff ff 90 <0f> 0b 90 31 db e9 06 fe ff ff 90 0f 0b 90 e9 55 ff ff ff 49 83 7f
RSP: 0018:ffffc90003317ae0 EFLAGS: 00010246
RAX: 0000000000000100 RBX: 0000000000000000 RCX: 8000000000000001
RDX: 0000008000800018 RSI: ffffffff8c8ffa60 RDI: ffffffff8c8ffa20
RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: dffffc0000000000 R11: fffffbfff2381798 R12: 0000008000800018
R13: 00000000000028c0 R14: 0000001000000000 R15: ffffffff86761f3c
FS:  000055559336b500(0000) GS:ffff888123477000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe31ae71220 CR3: 0000000077ef6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline]
 udmabuf_create+0x2dc/0xf50 drivers/dma-buf/udmabuf.c:386
 udmabuf_ioctl_create_list drivers/dma-buf/udmabuf.c:484 [inline]
 udmabuf_ioctl+0x29a/0x300 drivers/dma-buf/udmabuf.c:499
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe31af9f559
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:00007ffdbb7e03d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe31b225fa0 RCX: 00007fe31af9f559
RDX: 0000200000000100 RSI: 0000000040087543 RDI: 0000000000000003
RBP: 00007fe31b036b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe31b225fac R14: 00007fe31b225fa0 R15: 00007fe31b225fa0
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:7144 at __kvmalloc_node_noprof+0x793/0x820 mm/slub.c:7144, CPU#1: syz.0.17/5841
Modules linked in:
CPU: 1 UID: 0 PID: 5841 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__kvmalloc_node_noprof+0x793/0x820 mm/slub.c:7144
Code: ff 48 c7 c7 30 ba 29 90 48 89 de e8 07 71 02 03 e9 1b fc ff ff 48 c7 c7 70 ba 29 90 48 89 de e8 f3 70 02 03 e9 4c fc ff ff 90 <0f> 0b 90 31 db e9 06 fe ff ff 90 0f 0b 90 e9 55 ff ff ff 49 83 7f
RSP: 0018:ffffc90003317ae0 EFLAGS: 00010246
RAX: 0000000000000100 RBX: 0000000000000000 RCX: 8000000000000001
RDX: 0000008000800018 RSI: ffffffff8c8ffa60 RDI: ffffffff8c8ffa20
RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: dffffc0000000000 R11: fffffbfff2381798 R12: 0000008000800018
R13: 00000000000028c0 R14: 0000001000000000 R15: ffffffff86761f3c
FS:  000055559336b500(0000) GS:ffff888123477000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe31ae71220 CR3: 0000000077ef6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline]
 udmabuf_create+0x2dc/0xf50 drivers/dma-buf/udmabuf.c:386
 udmabuf_ioctl_create_list drivers/dma-buf/udmabuf.c:484 [inline]
 udmabuf_ioctl+0x29a/0x300 drivers/dma-buf/udmabuf.c:499
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe31af9f559
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:00007ffdbb7e03d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe31b225fa0 RCX: 00007fe31af9f559
RDX: 0000200000000100 RSI: 0000000040087543 RDI: 0000000000000003
RBP: 00007fe31b036b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe31b225fac R14: 00007fe31b225fa0 R15: 00007fe31b225fa0
 </TASK>