============================= [ BUG: Invalid wait context ] 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Not tainted ----------------------------- syz-executor/5922 is trying to lock: ffff88807ffd8298 (&zone->lock){-.-.}-{3:3}, at: rmqueue_bulk mm/page_alloc.c:2309 [inline] ffff88807ffd8298 (&zone->lock){-.-.}-{3:3}, at: __rmqueue_pcplist+0x6bb/0x1600 mm/page_alloc.c:3003 other info that might help us debug this: context-{2:2} 4 locks held by syz-executor/5922: #0: ffff888028dc8f18 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1623 [inline] #0: ffff888028dc8f18 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_sendmsg+0x20/0x50 net/ipv4/tcp.c:1357 #1: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #1: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: __ip_queue_xmit+0x73/0x1970 net/ipv4/ip_output.c:471 #2: ffff88806a63ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598 #3: ffff88806a644c58 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #3: ffff88806a644c58 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3032 [inline] #3: ffff88806a644c58 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3076 [inline] #3: ffff88806a644c58 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x350/0x2f80 mm/page_alloc.c:3473 stack backtrace: CPU: 0 UID: 0 PID: 5922 Comm: syz-executor Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline] check_wait_context kernel/locking/lockdep.c:4898 [inline] __lock_acquire+0x878/0x3c40 kernel/locking/lockdep.c:5176 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 kasan_save_stack+0x42/0x60 mm/kasan/common.c:48 task_tick_numa kernel/sched/fair.c:3616 [inline] task_tick_fair+0x524/0x8e0 kernel/sched/fair.c:13101 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 R13: 000000000000ffff R14: 0000000000000000 R15: ffff888032c8e6c8