last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.159' (ED25519) to the list of known hosts. [ 21.035119][ T4608] cgroup: Unknown subsys name 'net' [ 21.155118][ T4608] cgroup: Unknown subsys name 'cpuset' [ 21.157303][ T4608] cgroup: Unknown subsys name 'rlimit' [ 21.294223][ T4652] BUG: sleeping function called from invalid context at mm/memory.c:2007 [ 21.296044][ T4652] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 4652, name: dhcpcd-run-hook [ 21.296076][ T4652] preempt_count: 0, expected: 0 [ 21.296090][ T4652] RCU nest depth: 1, expected: 0 [ 21.296102][ T4652] 2 locks held by dhcpcd-run-hook/4652: [ 21.296114][ T4652] #0: ffff0000de25e178 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x158/0xaf8 [ 21.296167][ T4652] #1: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c [ 21.296213][ T4652] CPU: 0 UID: 0 PID: 4652 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT [ 21.296222][ T4652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 21.296227][ T4652] Call trace: [ 21.296230][ T4652] show_stack+0x2c/0x3c (C) [ 21.296241][ T4652] __dump_stack+0x30/0x40 [ 21.296250][ T4652] dump_stack_lvl+0xd8/0x12c [ 21.296258][ T4652] dump_stack+0x1c/0x28 [ 21.296266][ T4652] __might_resched+0x350/0x4ac [ 21.296277][ T4652] __zap_vma_range+0x3910/0x4040 [ 21.296285][ T4652] unmap_vmas+0x254/0x3b8 [ 21.296292][ T4652] exit_mmap+0x1e8/0xaf8 [ 21.296298][ T4652] __mmput+0xe4/0x2f0 [ 21.296306][ T4652] mmput+0x70/0xa8 [ 21.296313][ T4652] exit_mm+0x134/0x1e8 [ 21.296320][ T4652] do_exit+0x518/0x1a6c [ 21.296326][ T4652] do_group_exit+0x194/0x22c [ 21.296333][ T4652] pid_child_should_wake+0x0/0x110 [ 21.296339][ T4652] invoke_syscall+0x98/0x244 [ 21.296348][ T4652] el0_svc_common+0xe8/0x23c [ 21.296357][ T4652] do_el0_svc+0x48/0x58 [ 21.296366][ T4652] el0_svc+0x60/0x25c [ 21.296376][ T4652] el0t_64_sync_handler+0x48/0x148 [ 21.296384][ T4652] el0t_64_sync+0x198/0x19c [ 21.296399][ T4652] [ 21.321920][ T4652] ============================= [ 21.322759][ T4652] [ BUG: Invalid wait context ] [ 21.323601][ T4652] syzkaller #0 Tainted: G W [ 21.324561][ T4652] ----------------------------- [ 21.325345][ T4652] dhcpcd-run-hook/4652 is trying to lock: [ 21.326345][ T4652] ffff0000de25e178 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x228/0xaf8 [ 21.327764][ T4652] other info that might help us debug this: [ 21.328674][ T4652] context-{5:5} [ 21.329239][ T4652] 1 lock held by dhcpcd-run-hook/4652: [ 21.330172][ T4652] #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c [ 21.331833][ T4652] stack backtrace: [ 21.332449][ T4652] CPU: 0 UID: 0 PID: 4652 Comm: dhcpcd-run-hook Tainted: G W syzkaller #0 PREEMPT [ 21.334342][ T4652] Tainted: [W]=WARN Setting up swapspace version 1, size = 127995904 bytes [ 21.335023][ T4652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 21.336894][ T4652] Call trace: [ 21.337061][ T4608] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SS [ 21.339107][ T4652] show_stack+0x2c/0x3c (C) [ 21.339873][ T4652] __dump_stack+0x30/0x40 [ 21.340645][ T4652] dump_stack_lvl+0xd8/0x12c [ 21.341437][ T4652] dump_stack+0x1c/0x28 [ 21.342210][ T4652] __lock_acquire+0xabc/0x2f44 [ 21.343009][ T4652] lock_acquire+0x140/0x368 [ 21.343774][ T4652] down_write+0x50/0xc0 [ 21.344453][ T4652] exit_mmap+0x228/0xaf8 [ 21.345176][ T4652] __mmput+0xe4/0x2f0 [ 21.345886][ T4652] mmput+0x70/0xa8 [ 21.346609][ T4652] exit_mm+0x134/0x1e8 [ 21.347367][ T4652] do_exit+0x518/0x1a6c [ 21.348104][ T4652] do_group_exit+0x194/0x22c [ 21.348851][ T4652] pid_child_should_wake+0x0/0x110 [ 21.349753][ T4652] invoke_syscall+0x98/0x244 [ 21.350560][ T4652] el0_svc_common+0xe8/0x23c [ 21.351387][ T4652] do_el0_svc+0x48/0x58 [ 21.352150][ T4652] el0_svc+0x60/0x25c [ 21.352820][ T4652] el0t_64_sync_handler+0x48/0x148 [ 21.353720][ T4652] el0t_64_sync+0x198/0x19c