------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2001 set at [] futex_wait_setup+0x44c/0x500 kernel/futex/waitwake.c:659 WARNING: kernel/sched/core.c:8807 at __might_sleep+0x94/0xc0 kernel/sched/core.c:8807, CPU#1: syz.1.3999/23502 Modules linked in: CPU: 1 UID: 0 PID: 23502 Comm: syz.1.3999 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:__might_sleep+0x97/0xc0 kernel/sched/core.c:8807 Code: 8b 94 24 90 16 00 00 48 85 d2 75 14 48 83 c4 08 89 ee 48 89 df 31 d2 5b 5d 41 5c e9 33 fc ff ff 48 8d 3d fc 0e 6e 09 48 89 d1 <67> 48 0f b9 3a eb db e8 8d a5 92 00 eb 9f 89 74 24 04 e8 b2 a5 92 RSP: 0018:ffffc900001a8950 EFLAGS: 00010082 RAX: dffffc0000000000 RBX: ffffffff8811ef40 RCX: ffffffff81a56d7c RDX: ffffffff81a56d7c RSI: 0000000000002001 RDI: ffffffff8af0f3b0 RBP: 00000000000002c1 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 698030c068004806 R12: ffff88811c2cd700 R13: ffff888101717818 R14: ffff88813aefd000 R15: ffff8881017178f4 FS: 0000555560563500(0000) GS:ffff8882687d3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f123881cfd8 CR3: 000000014f6f0000 CR4: 00000000003506f0 Call Trace: usb_kill_urb+0x8e/0x320 drivers/usb/core/urb.c:705 usb_tx_block+0x91/0x320 drivers/net/wireless/marvell/libertas/if_usb.c:429 if_usb_send_fw_pkt.isra.0+0x2e4/0x550 drivers/net/wireless/marvell/libertas/if_usb.c:366 if_usb_receive_fwload+0x5d3/0x780 drivers/net/wireless/marvell/libertas/if_usb.c:592 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741 dummy_timer+0xd85/0x3670 drivers/usb/gadget/udc/dummy_hcd.c:1995 __run_hrtimer kernel/time/hrtimer.c:1785 [inline] __hrtimer_run_queues+0x50e/0xa70 kernel/time/hrtimer.c:1849 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1866 handle_softirqs+0x1de/0x9d0 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xed/0x150 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 46 97 23 fa 48 89 df e8 2e e7 23 fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 c5 6e 17 fa 65 8b 05 8e af 89 05 85 c0 74 16 5b RSP: 0018:ffffc90001f4fac8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff8881f5728140 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8901db96 RDI: ffffffff87afa420 RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90001f4fb70 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 futex_do_wait+0x2f/0x180 kernel/futex/waitwake.c:345 __futex_wait+0x1c4/0x300 kernel/futex/waitwake.c:687 futex_wait+0xed/0x380 kernel/futex/waitwake.c:715 do_futex+0x1ef/0x350 kernel/futex/syscalls.c:130 __do_sys_futex kernel/futex/syscalls.c:207 [inline] __se_sys_futex kernel/futex/syscalls.c:188 [inline] __x64_sys_futex+0x34f/0x4d0 kernel/futex/syscalls.c:188 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0x7b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1239dec629 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:00007ffc94605a98 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00000000002286c9 RCX: 00007f1239dec629 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f123a06609c RBP: 000000000000015e R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffc94605ba0 R11: 0000000000000246 R12: 00007ffc94605bc0 R13: 00007f123a06609c R14: 0000000000228827 R15: 00007ffc94605ba0 ---------------- Code disassembly (best guess): 0: 8b 94 24 90 16 00 00 mov 0x1690(%rsp),%edx 7: 48 85 d2 test %rdx,%rdx a: 75 14 jne 0x20 c: 48 83 c4 08 add $0x8,%rsp 10: 89 ee mov %ebp,%esi 12: 48 89 df mov %rbx,%rdi 15: 31 d2 xor %edx,%edx 17: 5b pop %rbx 18: 5d pop %rbp 19: 41 5c pop %r12 1b: e9 33 fc ff ff jmp 0xfffffc53 20: 48 8d 3d fc 0e 6e 09 lea 0x96e0efc(%rip),%rdi # 0x96e0f23 27: 48 89 d1 mov %rdx,%rcx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: eb db jmp 0xc 31: e8 8d a5 92 00 call 0x92a5c3 36: eb 9f jmp 0xffffffd7 38: 89 74 24 04 mov %esi,0x4(%rsp) 3c: e8 .byte 0xe8 3d: b2 a5 mov $0xa5,%dl 3f: 92 xchg %eax,%edx