------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2001 set at [] do_nanosleep+0x178/0x560 kernel/time/hrtimer.c:2120 WARNING: kernel/sched/core.c:8811 at __might_sleep+0x94/0xc0 kernel/sched/core.c:8811, CPU#0: syz.2.347/6567 Modules linked in: CPU: 0 UID: 0 PID: 6567 Comm: syz.2.347 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:__might_sleep+0x97/0xc0 kernel/sched/core.c:8811 Code: 8b 94 24 e0 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 5c 37 6e 09 48 89 d1 <67> 48 0f b9 3a eb db e8 cd 05 93 00 eb 9f 89 74 24 04 e8 f2 05 93 RSP: 0018:ffffc90000007950 EFLAGS: 00010086 RAX: dffffc0000000000 RBX: ffffffff88122a20 RCX: ffffffff876c6848 RDX: ffffffff876c6848 RSI: 0000000000002001 RDI: ffffffff8af13130 RBP: 00000000000002c1 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: b20d319a22088901 R12: ffff888115359d80 R13: ffff888117292818 R14: ffff888122296000 R15: ffff8881172928f4 FS: 00007ff272f7e6c0(0000) GS:ffff8882686c9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff272f7cfd8 CR3: 0000000135e68000 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+0xda1/0x36c0 drivers/usb/gadget/udc/dummy_hcd.c:2005 __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 96 5c 22 fa 48 89 df e8 7e ac 22 fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 b5 23 16 fa 65 8b 05 5e ef 88 05 85 c0 74 16 5b RSP: 0018:ffffc90014277c48 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffff8881f5628140 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff89024e74 RDI: ffffffff87afd320 RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888115359d80 R13: fffff5200284efb5 R14: dffffc0000000000 R15: 0000000000000001 hrtimer_start_expires include/linux/hrtimer.h:258 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:2047 [inline] do_nanosleep+0x1ea/0x560 kernel/time/hrtimer.c:2121 hrtimer_nanosleep+0x156/0x360 kernel/time/hrtimer.c:2171 common_nsleep+0xa1/0xd0 kernel/time/posix-timers.c:1345 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1391 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1368 [inline] __x64_sys_clock_nanosleep+0x336/0x480 kernel/time/posix-timers.c:1368 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: 0033:0x7ff27450d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ff272f7cf38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00007ff272f7e6c0 RCX: 00007ff27450d04e RDX: 00007ff272f7cf90 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000a R14: 00007ff2747c6090 R15: 00007ffd1c5ffb78 ---------------- Code disassembly (best guess): 0: 8b 94 24 e0 16 00 00 mov 0x16e0(%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 5c 37 6e 09 lea 0x96e375c(%rip),%rdi # 0x96e3783 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 cd 05 93 00 call 0x930603 36: eb 9f jmp 0xffffffd7 38: 89 74 24 04 mov %esi,0x4(%rsp) 3c: e8 .byte 0xe8 3d: f2 repnz 3e: 05 .byte 0x5 3f: 93 xchg %eax,%ebx