Extracting prog: 2m13.857802971s Minimizing prog: 24m10.58957265s Simplifying prog options: 2m16.68370392s Extracting C: 49.472868821s Simplifying C: 0s extracting reproducer from 1 programs testing a last program of every proc 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: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}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 0x0, 0x0) program crashed: BUG: soft lockup in corrupted single: successfully extracted reproducer found reproducer with 2 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: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}}): socket$netlink detailed listing: executing program 0: socket$netlink(0x10, 0x3, 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: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}}): sendto detailed listing: executing program 0: sendto(0xffffffffffffffff, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 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: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}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, 0x0, 0x0, 0x0, 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: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}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000), 0x0, 0x0, 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: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}}): socket$netlink-sendto program crashed: BUG: soft lockup in __hrtimer_run_queues a never seen crash title: BUG: soft lockup in __hrtimer_run_queues, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 0x0, 0x0) program crashed: BUG: soft lockup in __hrtimer_run_queues a never seen crash title: BUG: soft lockup in __hrtimer_run_queues, ignore testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 0x0, 0x0) program crashed: BUG: soft lockup in gate_timer_func a never seen crash title: BUG: soft lockup in gate_timer_func, ignore testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 0x0, 0x0) program crashed: BUG: soft lockup in __hrtimer_run_queues validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 0x0, 0x0) program crashed: BUG: soft lockup in __hrtimer_run_queues validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-sendto detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendto(r0, &(0x7f0000000000)="68000000300005050100000000000000000000005400018050000180090001006761746500000000400002801800020000000000000000000000000000000000000000001800058014000180080001000000000008000300640000000c000700e80300ffffffffff", 0x68, 0x0, 0x0, 0x0) program crashed: BUG: soft lockup in __hrtimer_run_queues validation run: crashed=true reproducing took 33m4.92639219s repro crashed as (corrupted=false): watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor:4847] Modules linked in: irq event stamp: 38115101 hardirqs last enabled at (38115100): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] hardirqs last enabled at (38115100): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198 hardirqs last disabled at (38115101): [] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline] hardirqs last disabled at (38115101): [] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543 softirqs last enabled at (137588): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (137588): [] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline] softirqs last enabled at (137588): [] fpsimd_restore_current_state+0x39c/0x9c8 arch/arm64/kernel/fpsimd.c:1797 softirqs last disabled at (137767): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 CPU: 0 UID: 0 PID: 4847 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198 sp : ffff80008eb67dc0 x29: ffff80008eb67dc0 x28: 1fffe00034bb7c3a x27: ffff0001a5dbe1c0 x26: ffff0001a5dbe1d0 x25: ffff0000dee08938 x24: dfff800000000000 x23: 0000000000000001 x22: ffff800084ec6bfc x21: ffff0001a5dbdd80 x20: ffff0001a5dbdd80 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff80008199aec4 x16: ffff80008199b124 x15: ffff80008199c72c x14: 000000008030dda8 x13: 0000000000000001 x12: 0000000000000000 x11: ffff800080156070 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156118 x2 : 0000000000000000 x1 : ffff0000ca051d40 x0 : ffff80011d2d8000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P) __run_hrtimer kernel/time/hrtimer.c:2028 [inline] __hrtimer_run_queues+0x22c/0xbe0 kernel/time/hrtimer.c:2096 hrtimer_run_softirq+0x15c/0x21c kernel/time/hrtimer.c:2113 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752 __el1_irq arch/arm64/kernel/entry-common.c:531 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P) unlock_hrtimer_base kernel/time/hrtimer.c:1039 [inline] hrtimer_try_to_cancel+0x2a4/0x614 kernel/time/hrtimer.c:1634 hrtimer_cancel+0x20/0x6c kernel/time/hrtimer.c:1750 do_nanosleep+0x108/0x390 kernel/time/hrtimer.c:2401 hrtimer_nanosleep+0x134/0x29c kernel/time/hrtimer.c:2445 common_nsleep+0xa0/0xb8 kernel/time/posix-timers.c:1360 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1406 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1383 [inline] __arm64_sys_clock_nanosleep+0x354/0x38c kernel/time/posix-timers.c:1383 __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 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] NMI backtrace for cpu 1 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle_call+0xd0/0xfc kernel/sched/idle.c:129 final repro crashed as (corrupted=false): watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor:4847] Modules linked in: irq event stamp: 38115101 hardirqs last enabled at (38115100): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] hardirqs last enabled at (38115100): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198 hardirqs last disabled at (38115101): [] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline] hardirqs last disabled at (38115101): [] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543 softirqs last enabled at (137588): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (137588): [] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline] softirqs last enabled at (137588): [] fpsimd_restore_current_state+0x39c/0x9c8 arch/arm64/kernel/fpsimd.c:1797 softirqs last disabled at (137767): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 CPU: 0 UID: 0 PID: 4847 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198 sp : ffff80008eb67dc0 x29: ffff80008eb67dc0 x28: 1fffe00034bb7c3a x27: ffff0001a5dbe1c0 x26: ffff0001a5dbe1d0 x25: ffff0000dee08938 x24: dfff800000000000 x23: 0000000000000001 x22: ffff800084ec6bfc x21: ffff0001a5dbdd80 x20: ffff0001a5dbdd80 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff80008199aec4 x16: ffff80008199b124 x15: ffff80008199c72c x14: 000000008030dda8 x13: 0000000000000001 x12: 0000000000000000 x11: ffff800080156070 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156118 x2 : 0000000000000000 x1 : ffff0000ca051d40 x0 : ffff80011d2d8000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P) __run_hrtimer kernel/time/hrtimer.c:2028 [inline] __hrtimer_run_queues+0x22c/0xbe0 kernel/time/hrtimer.c:2096 hrtimer_run_softirq+0x15c/0x21c kernel/time/hrtimer.c:2113 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752 __el1_irq arch/arm64/kernel/entry-common.c:531 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P) unlock_hrtimer_base kernel/time/hrtimer.c:1039 [inline] hrtimer_try_to_cancel+0x2a4/0x614 kernel/time/hrtimer.c:1634 hrtimer_cancel+0x20/0x6c kernel/time/hrtimer.c:1750 do_nanosleep+0x108/0x390 kernel/time/hrtimer.c:2401 hrtimer_nanosleep+0x134/0x29c kernel/time/hrtimer.c:2445 common_nsleep+0xa0/0xb8 kernel/time/posix-timers.c:1360 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1406 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1383 [inline] __arm64_sys_clock_nanosleep+0x354/0x38c kernel/time/posix-timers.c:1383 __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 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] NMI backtrace for cpu 1 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle_call+0xd0/0xfc kernel/sched/idle.c:129