BUG: sleeping function called from invalid context at kernel/workqueue.c:3414 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6337, name: syz.1.155 preempt_count: 100, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by syz.1.155/6337: #0: ffffc9000c1efb20 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:419 [inline] [] handle_softirqs+0x101/0x820 kernel/softirq.c:554 CPU: 1 PID: 6337 Comm: syz.1.155 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 __might_resched+0x48d/0x5f0 kernel/sched/core.c:10212 start_flush_work kernel/workqueue.c:3414 [inline] __flush_work+0x10f/0xac0 kernel/workqueue.c:3474 __cancel_work_timer+0x3f8/0x560 kernel/workqueue.c:3562 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:694 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0x56/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0033:0x7f117de6e404 Code: 48 0f 7e ca 48 39 c2 73 65 48 39 f0 0f 82 2a 01 00 00 48 39 f2 72 65 66 0f c6 c0 01 0f 11 45 00 4c 89 e6 eb 09 90 48 8b 4b 08 <48> 83 c3 08 48 39 d1 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13 RSP: 002b:00007fff4d3fb810 EFLAGS: 00000287 RAX: 00007f117dddb640 RBX: 00007f117dddab70 RCX: ffffffff84b0ab82 RDX: ffffffff84b0a9b5 RSI: 00007f117dddb640 RDI: 00007f117dddb020 RBP: 00007f117ddda580 R08: 0000000000000000 R09: 00007f117e226038 R10: 0000000000000003 R11: 0000000000000000 R12: 00007f117dddbac0 R13: 0000000000000018 R14: 00000000000002a8 R15: 0000000000000003 BUG: scheduling while atomic: syz.1.155/6337/0x00000101 1 lock held by syz.1.155/6337: #0: ffffc9000c1efb20 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 Modules linked in: Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:419 [inline] [] handle_softirqs+0x101/0x820 kernel/softirq.c:554