------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2001 set at [] futex_wait_setup+0x468/0x540 kernel/futex/waitwake.c:694 WARNING: kernel/sched/core.c:9187 at __might_sleep+0x94/0xc0 kernel/sched/core.c:9187, CPU#1: syz.3.240/6214 Modules linked in: CPU: 1 UID: 0 PID: 6214 Comm: syz.3.240 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:__might_sleep+0x97/0xc0 kernel/sched/core.c:9187 Code: 8b 94 24 c8 17 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 12 93 09 48 89 d1 <67> 48 0f b9 3a eb db e8 8d 79 9c 00 eb 9f 89 74 24 04 e8 b2 79 9c RSP: 0018:ffffc900001b8bd8 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: ffffffff87a86800 RCX: ffffffff81a84078 RDX: ffffffff81a84078 RSI: 0000000000002001 RDI: ffffffff8b16eab0 RBP: 00000000000011d1 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888134585ac0 R13: 0000000000000101 R14: 1ffff9200003718d R15: ffffffff85f39dc0 FS: 0000555560e78500(0000) GS:ffff8882684d8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5bb5e67dac CR3: 000000011f262000 CR4: 00000000003506f0 Call Trace: __cancel_work_sync kernel/workqueue.c:4561 [inline] cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4642 mmc_free_host+0x19/0x40 drivers/mmc/core/host.c:700 vub300_delete drivers/mmc/host/vub300.c:379 [inline] kref_put include/linux/kref.h:65 [inline] vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline] vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers+0x757/0xb00 kernel/time/timer.c:2374 __run_timer_base kernel/time/timer.c:2386 [inline] __run_timer_base kernel/time/timer.c:2378 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2395 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0x168/0x210 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:221 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 b6 67 04 fa 48 89 df e8 3e be 04 fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 75 02 f7 f9 65 48 83 3d b4 fe 97 05 00 74 16 5b RSP: 0018:ffffc9001320fa58 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff8881f5728140 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff892df159 RDI: ffffffff87d2bd80 RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000246 R13: ffffc9001320fce0 R14: 0000000000000000 R15: 0000000000000001 unlock_hrtimer_base kernel/time/hrtimer.c:1042 [inline] hrtimer_start_range_ns_user+0x170/0x720 kernel/time/hrtimer.c:1629 hrtimer_start_expires_user include/linux/hrtimer.h:247 [inline] hrtimer_sleeper_start_expires+0x67/0x170 kernel/time/hrtimer.c:2356 futex_do_wait+0x2f/0x180 kernel/futex/waitwake.c:374 __futex_wait+0x1c4/0x300 kernel/futex/waitwake.c:722 futex_wait+0xe6/0x370 kernel/futex/waitwake.c:750 do_futex+0x265/0x440 kernel/futex/syscalls.c:133 __do_sys_futex kernel/futex/syscalls.c:210 [inline] __se_sys_futex kernel/futex/syscalls.c:191 [inline] __x64_sys_futex+0x34f/0x4d0 kernel/futex/syscalls.c:191 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5bb5bde199 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:00007ffebaa587a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 000000000002ea7b RCX: 00007f5bb5bde199 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5bb5e65fac RBP: 0000000000000bea R08: 00007f5bb69a3000 R09: 0000000000000000 R10: 00007ffebaa588b0 R11: 0000000000000246 R12: 00007ffebaa588d0 R13: 00007f5bb5e65fac R14: 000000000002f665 R15: 00007ffebaa588b0 ---------------- Code disassembly (best guess): 0: 8b 94 24 c8 17 00 00 mov 0x17c8(%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 12 93 09 lea 0x99312fc(%rip),%rdi # 0x9931323 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 79 9c 00 call 0x9c79c3 36: eb 9f jmp 0xffffffd7 38: 89 74 24 04 mov %esi,0x4(%rsp) 3c: e8 .byte 0xe8 3d: b2 79 mov $0x79,%dl 3f: 9c pushf