------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2001 set at [] do_nanosleep+0xb8/0x500 kernel/time/hrtimer.c:2395 WARNING: kernel/sched/core.c:9120 at __might_sleep+0x94/0xc0 kernel/sched/core.c:9120, CPU#1: syz-executor/2972 Modules linked in: CPU: 1 UID: 0 PID: 2972 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__might_sleep+0x97/0xc0 kernel/sched/core.c:9120 Code: 8b 94 24 88 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 0c 7b 71 09 48 89 d1 <67> 48 0f b9 3a eb db e8 ad 10 99 00 eb 9f 89 74 24 04 e8 d2 10 99 RSP: 0018:ffffc900001a8be8 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: ffffffff878863c0 RCX: ffffffff877f14d8 RDX: ffffffff877f14d8 RSI: 0000000000002001 RDI: ffffffff8af4ecc0 RBP: 0000000000001187 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881248b5a00 R13: 1ffff9200003518e R14: ffffffff85e91b70 R15: 0000000000000001 FS: 000055556c13c500(0000) GS:ffff888268733000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c390155 CR3: 000000013009c000 CR4: 00000000003506f0 Call Trace: __cancel_work_sync kernel/workqueue.c:4487 [inline] cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4568 mmc_free_host+0x19/0x30 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+0x19a/0x610 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+0x1dd/0x990 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x160/0x210 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 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:lock_hrtimer_base kernel/time/hrtimer.c:191 [inline] RIP: 0010:hrtimer_start_range_ns_user+0x88/0x4c0 kernel/time/hrtimer.c:1575 Code: 8b 73 30 49 81 fe 80 b1 71 89 0f 84 7c 02 00 00 e8 4d c0 13 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 0f 85 78 03 00 00 49 8b 3e 43 d6 de 05 80 7d 00 00 49 89 c4 0f 85 56 03 00 00 4c 3b 73 30 RSP: 0018:ffffc900017afc00 EFLAGS: 00000246 RAX: 1ffff1103eae5020 RBX: ffffc900017afd58 RCX: 0000000000000000 RDX: ffff8881248b5a00 RSI: ffffffff81a05433 RDI: ffff8881f5728040 RBP: fffff520002f5fb1 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881248b5a00 R13: ffffc900017afd88 R14: ffff8881f5728100 R15: dffffc0000000000 hrtimer_start_expires_user include/linux/hrtimer.h:248 [inline] hrtimer_sleeper_start_expires+0x67/0x170 kernel/time/hrtimer.c:2319 do_nanosleep+0xf7/0x500 kernel/time/hrtimer.c:2396 hrtimer_nanosleep+0x14f/0x350 kernel/time/hrtimer.c:2445 common_nsleep+0xa1/0xd0 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] __x64_sys_clock_nanosleep+0x336/0x480 kernel/time/posix-timers.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f69f44e9257 Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffdc2ca3e00 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 000055556c13c500 RCX: 00007f69f44e9257 RDX: 00007ffdc2ca3e40 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffdc2ca3eac R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000001388 R13: 00000000000927c0 R14: 000000000012f00b R15: 00007ffdc2ca3f00 ---------------- Code disassembly (best guess): 0: 8b 94 24 88 17 00 00 mov 0x1788(%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 0c 7b 71 09 lea 0x9717b0c(%rip),%rdi # 0x9717b33 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 ad 10 99 00 call 0x9910e3 36: eb 9f jmp 0xffffffd7 38: 89 74 24 04 mov %esi,0x4(%rsp) 3c: e8 .byte 0xe8 3d: d2 10 rclb %cl,(%rax) 3f: 99 cltd