Extracting prog: 1m50.839676427s Minimizing prog: 8m11.628670832s Simplifying prog options: 0s Extracting C: 26.783959271s Simplifying C: 6m6.357447163s 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: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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000), 0x10000}, &(0x7f0000001800)={&(0x7f0000800000), 0x10000, 0x1}, {}, 0x0, 0x1000}, 0x1) program crashed: WARNING in netdev_queue_get_dma_dev single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup detailed listing: executing program 0: io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: io_uring_register$IORING_REGISTER_ZCRX_IFQ(0xffffffffffffffff, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000), 0x10000}, &(0x7f0000001800)={&(0x7f0000800000), 0x10000, 0x1}, {}, 0x0, 0x1000}, 0x1) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, 0x0) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000), 0x10000}, &(0x7f0000001800)={&(0x7f0000800000), 0x10000, 0x1}, {}, 0x0, 0x1000}, 0x1) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, 0x0, 0x1) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, 0x0, &(0x7f0000001800)={&(0x7f0000800000), 0x0, 0x1}, {}, 0x0, 0x1000}, 0x1) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={0x0}, &(0x7f0000001800)={&(0x7f0000800000), 0x0, 0x1}, {}, 0x0, 0x1000}, 0x1) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000)}, 0x0, {}, 0x0, 0x1000}, 0x1) program did not crash testing program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000)}, &(0x7f0000001800)={0x0, 0x0, 0x1}, {}, 0x0, 0x1000}, 0x1) program did not crash extracting C reproducer testing compiled C program (duration=35.868008631s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev simplifying C reproducer testing compiled C program (duration=35.868008631s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing compiled C program (duration=35.868008631s, {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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing compiled C program (duration=35.868008631s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing compiled C program (duration=35.868008631s, {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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing compiled C program (duration=35.868008631s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing compiled C program (duration=35.868008631s, {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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing compiled C program (duration=35.868008631s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ program crashed: WARNING in netdev_queue_get_dma_dev testing program (duration=35.868008631s, {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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000), 0x10000}, &(0x7f0000001800)={&(0x7f0000800000), 0x10000, 0x1}, {}, 0x0, 0x1000}, 0x1) program crashed: WARNING in netdev_queue_get_dma_dev validation run: crashed=true testing program (duration=35.868008631s, {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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000), 0x10000}, &(0x7f0000001800)={&(0x7f0000800000), 0x10000, 0x1}, {}, 0x0, 0x1000}, 0x1) program crashed: WARNING in netdev_queue_get_dma_dev validation run: crashed=true testing program (duration=35.868008631s, {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}}): io_uring_setup-io_uring_register$IORING_REGISTER_ZCRX_IFQ detailed listing: executing program 0: r0 = io_uring_setup(0x10, &(0x7f0000000300)={0x0, 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0}) io_uring_register$IORING_REGISTER_ZCRX_IFQ(r0, 0x20, &(0x7f0000000400)={0x2, 0x0, 0x10, 0x0, &(0x7f0000001000)={&(0x7f0000800000), 0x10000}, &(0x7f0000001800)={&(0x7f0000800000), 0x10000, 0x1}, {}, 0x0, 0x1000}, 0x1) program crashed: WARNING in netdev_queue_get_dma_dev validation run: crashed=true reproducing took 18m40.227195201s repro crashed as (corrupted=false): ------------[ cut here ]------------ RTNL: assertion failed at ./include/net/netdev_lock.h (72) WARNING: ./include/net/netdev_lock.h:72 at netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline], CPU#0: syz.0.17/4921 WARNING: ./include/net/netdev_lock.h:72 at netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43, CPU#0: syz.0.17/4921 Modules linked in: CPU: 0 UID: 0 PID: 4921 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] pc : netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43 lr : netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] lr : netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43 sp : ffff80009b7c7880 x29: ffff80009b7c7880 x28: 1fffe00019df7d95 x27: dfff800000000000 x26: ffff7000136f8f1c x25: 0000000000000000 x24: 0000000000000000 x23: dfff800000000000 x22: ffff80008a19d000 x21: 0000000000000000 x20: ffff0000d8262000 x19: 0000000000000000 x18: 1fffe00034bb7428 x17: 0000000000000003 x16: ffff800088b37000 x15: ffff800088bed220 x14: ffff0001a5dba14c x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000003 x9 : 9c6aefbe7cfe3100 x8 : 9c6aefbe7cfe3100 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000803b706c x2 : 0000000000000001 x1 : ffff0000c7439d40 x0 : 0000000000000001 Call trace: netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] (P) netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43 (P) zcrx_register_netdev+0x1b8/0x460 io_uring/zcrx.c:831 io_register_zcrx+0x7ac/0xa00 io_uring/zcrx.c:983 __io_uring_register io_uring/register.c:942 [inline] __do_sys_io_uring_register io_uring/register.c:1040 [inline] __se_sys_io_uring_register io_uring/register.c:1017 [inline] __arm64_sys_io_uring_register+0x7f0/0x13fc io_uring/register.c:1017 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590 irq event stamp: 846 hardirqs last enabled at (845): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline] hardirqs last enabled at (845): [] finish_lock_switch kernel/sched/core.c:5241 [inline] hardirqs last enabled at (845): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5359 hardirqs last disabled at (846): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445 softirqs last enabled at (810): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (810): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650 softirqs last disabled at (797): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- final repro crashed as (corrupted=false): ------------[ cut here ]------------ RTNL: assertion failed at ./include/net/netdev_lock.h (72) WARNING: ./include/net/netdev_lock.h:72 at netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline], CPU#0: syz.0.17/4921 WARNING: ./include/net/netdev_lock.h:72 at netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43, CPU#0: syz.0.17/4921 Modules linked in: CPU: 0 UID: 0 PID: 4921 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] pc : netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43 lr : netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] lr : netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43 sp : ffff80009b7c7880 x29: ffff80009b7c7880 x28: 1fffe00019df7d95 x27: dfff800000000000 x26: ffff7000136f8f1c x25: 0000000000000000 x24: 0000000000000000 x23: dfff800000000000 x22: ffff80008a19d000 x21: 0000000000000000 x20: ffff0000d8262000 x19: 0000000000000000 x18: 1fffe00034bb7428 x17: 0000000000000003 x16: ffff800088b37000 x15: ffff800088bed220 x14: ffff0001a5dba14c x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000003 x9 : 9c6aefbe7cfe3100 x8 : 9c6aefbe7cfe3100 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000803b706c x2 : 0000000000000001 x1 : ffff0000c7439d40 x0 : 0000000000000001 Call trace: netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] (P) netdev_queue_get_dma_dev+0x480/0x4ac net/core/netdev_queues.c:43 (P) zcrx_register_netdev+0x1b8/0x460 io_uring/zcrx.c:831 io_register_zcrx+0x7ac/0xa00 io_uring/zcrx.c:983 __io_uring_register io_uring/register.c:942 [inline] __do_sys_io_uring_register io_uring/register.c:1040 [inline] __se_sys_io_uring_register io_uring/register.c:1017 [inline] __arm64_sys_io_uring_register+0x7f0/0x13fc io_uring/register.c:1017 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590 irq event stamp: 846 hardirqs last enabled at (845): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline] hardirqs last enabled at (845): [] finish_lock_switch kernel/sched/core.c:5241 [inline] hardirqs last enabled at (845): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5359 hardirqs last disabled at (846): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445 softirqs last enabled at (810): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (810): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650 softirqs last disabled at (797): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---