Extracting prog: 3m23.917961056s Minimizing prog: 27m16.101902062s Simplifying prog options: 6m22.284554742s Extracting C: 57.891995599s Simplifying C: 4m10.398684905s 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:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 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:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program crashed: WARNING in usb_stor_msg_common/usb_submit_urb single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: syz_usb_ep_read(0xffffffffffffffff, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(0xffffffffffffffff, 0x1, 0x0, 0x0) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x0, 0x0, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program crashed: WARNING in usb_stor_msg_common/usb_submit_urb extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: WARNING in corrupted/usb_submit_urb a never seen crash title: WARNING in corrupted/usb_submit_urb, ignore testing program (duration=6m0s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program crashed: WARNING in usb_stor_msg_common/usb_submit_urb extracting C reproducer testing compiled C program (duration=6m0s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: WARNING in usb_stor_msg_common/usb_submit_urb simplifying C reproducer testing compiled C program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: WARNING in usb_stor_msg_common/usb_submit_urb testing compiled C program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: WARNING in usb_stor_msg_common/usb_submit_urb testing compiled C program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: WARNING in usb_stor_msg_common/usb_submit_urb testing compiled C program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read program crashed: WARNING in usb_stor_msg_common/usb_submit_urb testing program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program crashed: WARNING in usb_stor_msg_common/usb_submit_urb validation run: crashed=true testing program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program crashed: WARNING in usb_stor_msg_common/usb_submit_urb validation run: crashed=true testing program (duration=6m0s, {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}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_read detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x40, 0xcf2, 0x6250, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x0, 0x80, 0xfa, "", [{{0x9, 0x4, 0x0, 0x0, 0x2, 0x8, 0x6, 0x50, 0x0, [], [{{0x9, 0x5, 0x1, 0x2, 0x200}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_ep_read(r0, 0x1, 0x1f, &(0x7f0000001000)) syz_usb_ep_read(r0, 0x1, 0x0, 0x0) program crashed: WARNING in usb_stor_msg_common/usb_submit_urb validation run: crashed=true reproducing took 51m32.752473065s repro crashed as (corrupted=false): ------------[ cut here ]------------ URB ffff888115145d00 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x1689/0x19b0 drivers/usb/core/urb.c:379, CPU#1: kworker/1:2/927 Modules linked in: CPU: 1 UID: 0 PID: 927 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_freezable usb_stor_scan_dwork RIP: 0010:usb_submit_urb+0x168c/0x19b0 drivers/usb/core/urb.c:379 Code: 00 48 8b 04 24 48 8b 90 b0 00 00 00 e9 70 ff ff ff bb ed ff ff ff e9 ac f1 ff ff e8 ae 10 b3 fc 48 8d 3d 37 48 1a 06 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 8e f1 ff ff c7 44 24 30 00 00 00 RSP: 0018:ffffc90002ebfa28 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888115145d00 RCX: 0000000000000000 RDX: ffff88810cfbdac0 RSI: ffff888115145d00 RDI: ffffffff8b1c0780 RBP: 1ffff920005d7f58 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000059ab R12: ffff88811bcc8fb0 R13: ffff88811bcc8f28 R14: ffffc90002ebfae0 R15: ffff888115145d00 FS: 0000000000000000(0000) GS:ffff8882684eb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056468982c168 CR3: 000000010b70c000 CR4: 00000000003506f0 Call Trace: usb_stor_msg_common+0x241/0x560 drivers/usb/storage/transport.c:143 usb_stor_control_msg drivers/usb/storage/transport.c:205 [inline] usb_stor_Bulk_max_lun+0x428/0x680 drivers/usb/storage/transport.c:1081 usb_stor_scan_dwork+0x1e6/0x2c0 drivers/usb/storage/usb.c:988 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387 process_scheduled_works kernel/workqueue.c:3470 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x69f/0xc90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 04 24 add $0x24,%al 5: 48 8b 90 b0 00 00 00 mov 0xb0(%rax),%rdx c: e9 70 ff ff ff jmp 0xffffff81 11: bb ed ff ff ff mov $0xffffffed,%ebx 16: e9 ac f1 ff ff jmp 0xfffff1c7 1b: e8 ae 10 b3 fc call 0xfcb310ce 20: 48 8d 3d 37 48 1a 06 lea 0x61a4837(%rip),%rdi # 0x61a485e 27: 48 89 de mov %rbx,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: bb f0 ff ff ff mov $0xfffffff0,%ebx 34: e9 8e f1 ff ff jmp 0xfffff1c7 39: c7 .byte 0xc7 3a: 44 24 30 rex.R and $0x30,%al 3d: 00 00 add %al,(%rax) final repro crashed as (corrupted=false): ------------[ cut here ]------------ URB ffff888115145d00 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x1689/0x19b0 drivers/usb/core/urb.c:379, CPU#1: kworker/1:2/927 Modules linked in: CPU: 1 UID: 0 PID: 927 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_freezable usb_stor_scan_dwork RIP: 0010:usb_submit_urb+0x168c/0x19b0 drivers/usb/core/urb.c:379 Code: 00 48 8b 04 24 48 8b 90 b0 00 00 00 e9 70 ff ff ff bb ed ff ff ff e9 ac f1 ff ff e8 ae 10 b3 fc 48 8d 3d 37 48 1a 06 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 8e f1 ff ff c7 44 24 30 00 00 00 RSP: 0018:ffffc90002ebfa28 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888115145d00 RCX: 0000000000000000 RDX: ffff88810cfbdac0 RSI: ffff888115145d00 RDI: ffffffff8b1c0780 RBP: 1ffff920005d7f58 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000059ab R12: ffff88811bcc8fb0 R13: ffff88811bcc8f28 R14: ffffc90002ebfae0 R15: ffff888115145d00 FS: 0000000000000000(0000) GS:ffff8882684eb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056468982c168 CR3: 000000010b70c000 CR4: 00000000003506f0 Call Trace: usb_stor_msg_common+0x241/0x560 drivers/usb/storage/transport.c:143 usb_stor_control_msg drivers/usb/storage/transport.c:205 [inline] usb_stor_Bulk_max_lun+0x428/0x680 drivers/usb/storage/transport.c:1081 usb_stor_scan_dwork+0x1e6/0x2c0 drivers/usb/storage/usb.c:988 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387 process_scheduled_works kernel/workqueue.c:3470 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x69f/0xc90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 04 24 add $0x24,%al 5: 48 8b 90 b0 00 00 00 mov 0xb0(%rax),%rdx c: e9 70 ff ff ff jmp 0xffffff81 11: bb ed ff ff ff mov $0xffffffed,%ebx 16: e9 ac f1 ff ff jmp 0xfffff1c7 1b: e8 ae 10 b3 fc call 0xfcb310ce 20: 48 8d 3d 37 48 1a 06 lea 0x61a4837(%rip),%rdi # 0x61a485e 27: 48 89 de mov %rbx,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: bb f0 ff ff ff mov $0xfffffff0,%ebx 34: e9 8e f1 ff ff jmp 0xfffff1c7 39: c7 .byte 0xc7 3a: 44 24 30 rex.R and $0x30,%al 3d: 00 00 add %al,(%rax)