BUG: sleeping function called from invalid context at kernel/workqueue.c:4561 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 14894, name: dhcpcd-run-hook preempt_count: 100, expected: 0 RCU nest depth: 1, expected: 0 locks held by dhcpcd-run-hook/14894: 3, last CPU#0: #0: ffff888119da0340 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline] #0: ffff888119da0340 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_maybe_expand+0x1e2/0x3d0 mm/mmap.c:1691 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: mt_find+0x136/0x9b0 lib/maple_tree.c:6431 Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:486 [inline] [] handle_softirqs+0xf3/0x9b0 kernel/softirq.c:621 CPU: 0 UID: 0 PID: 14894 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 __might_resched.cold+0x1dc/0x222 kernel/sched/core.c:9264 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:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947 RSP: 0018:ffffc90014baf920 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200 RDX: 0000000000000000 RSI: ffffffff892be127 RDI: ffffffff87d2bd80 RBP: ffffffff898e6f20 R08: 0000000032a4bc37 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] mt_find+0x14a/0x9b0 lib/maple_tree.c:6431 gup_vma_lookup+0x20/0x170 mm/gup.c:1275 __get_user_pages+0x241/0x2970 mm/gup.c:1396 __get_user_pages_locked mm/gup.c:1692 [inline] get_user_pages_remote+0x3d2/0xb10 mm/gup.c:2609 copy_strings.isra.0+0x475/0x790 fs/exec.c:511 do_execveat_common.isra.0+0x38f/0x580 fs/exec.c:1941 __do_sys_execve fs/exec.c:2038 [inline] __se_sys_execve fs/exec.c:2032 [inline] __x64_sys_execve+0x93/0xd0 fs/exec.c:2032 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: 0033:0x7f65da68e107 Code: 0f 00 64 c7 00 07 00 00 00 b8 ff ff ff ff c9 c3 0f 1f 00 48 8b 05 a9 ee 0f 00 48 8b 10 e9 01 00 00 00 90 b8 3b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c1 ec 0f 00 f7 d8 64 89 01 48 RSP: 002b:00007ffdc0ec44e8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RBP: 000055bee7e24ef8 R08: 00007ffdc0ec7f12 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 000055bee7e24e68 R13: 00007f65da853e8b R14: 000055bee7e24e68 R15: 0000000000000000