============================= [ BUG: Invalid wait context ] 6.13.0-rc3-syzkaller-g78d4f34e2115 #0 Not tainted ----------------------------- syz-executor/5816 is trying to lock: ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue_buddy mm/page_alloc.c:2907 [inline] ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue mm/page_alloc.c:3080 [inline] ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: get_page_from_freelist+0xb3d/0x37a0 mm/page_alloc.c:3471 other info that might help us debug this: context-{2:2} 11 locks held by syz-executor/5816: #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb_list_internal+0x4e8/0xe30 net/core/dev.c:5890 #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish+0x230/0x5f0 net/ipv4/ip_input.c:232 #2: ffff888058439b58 (slock-AF_INET/1){+.-.}-{3:3}, at: tcp_v4_rcv+0x2d58/0x37f0 net/ipv4/tcp_ipv4.c:2347 #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __ip_queue_xmit+0x63/0x1ef0 net/ipv4/ip_output.c:471 #4: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #4: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #4: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x45f/0x1390 net/ipv4/ip_output.c:229 #5: ffffffff8e937b40 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline] #5: ffffffff8e937b40 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:901 [inline] #5: ffffffff8e937b40 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x2f4/0x3f50 net/core/dev.c:4359 #6: ffff88802ab36258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #6: ffff88802ab36258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{3:3}, at: qdisc_run_begin include/net/sch_generic.h:197 [inline] #6: ffff88802ab36258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{3:3}, at: __dev_xmit_skb net/core/dev.c:3814 [inline] #6: ffff88802ab36258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{3:3}, at: __dev_queue_xmit+0x13bc/0x3f50 net/core/dev.c:4400 #7: ffff888140acd118 (_xmit_ETHER#2){+.-.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline] #7: ffff888140acd118 (_xmit_ETHER#2){+.-.}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4445 [inline] #7: ffff888140acd118 (_xmit_ETHER#2){+.-.}-{3:3}, at: sch_direct_xmit+0x1a7/0x5d0 net/sched/sch_generic.c:341 #8: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #8: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #8: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: dev_queue_xmit_nit+0x2b/0xca0 net/core/dev.c:2296 #9: ffff8880b8644958 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #9: ffff8880b8644958 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3030 [inline] #9: ffff8880b8644958 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3074 [inline] #9: ffff8880b8644958 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x7d3/0x37a0 mm/page_alloc.c:3471 #10: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 stack backtrace: CPU: 0 UID: 0 PID: 5816 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller-g78d4f34e2115 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 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+0x15a8/0x2100 kernel/locking/lockdep.c:5176 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 rmqueue_buddy mm/page_alloc.c:2907 [inline] rmqueue mm/page_alloc.c:3080 [inline] get_page_from_freelist+0xb3d/0x37a0 mm/page_alloc.c:3471 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627 kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544 task_work_add+0xd9/0x490 kernel/task_work.c:77 task_tick_numa kernel/sched/fair.c:3616 [inline] task_tick_fair+0x58c/0x7b0 kernel/sched/fair.c:13101 sched_tick+0x21e/0x660 kernel/sched/core.c:5652 update_process_times+0x276/0x2f0 kernel/time/timer.c:2524 tick_sched_handle kernel/time/tick-sched.c:276 [inline] tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae b1 3a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 53 57 a2 f5 65 8b 05 f4 aa 38 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000005660 EFLAGS: 00000206 RAX: 25157efab0bc0100 RBX: 1ffff92000000ad0 RCX: ffffffff817b275a RDX: dffffc0000000000 RSI: ffffffff8c0a9760 RDI: 0000000000000001 RBP: ffffc900000056f8 R08: ffffffff942a1887 R09: 1ffffffff2854310 R10: dffffc0000000000 R11: fffffbfff2854311 R12: dffffc0000000000 R13: 1ffff92000000acc R14: ffffc90000005680 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] rmqueue_bulk mm/page_alloc.c:2326 [inline] __rmqueue_pcplist+0x21fd/0x2a90 mm/page_alloc.c:3001 rmqueue_pcplist mm/page_alloc.c:3043 [inline] rmqueue mm/page_alloc.c:3074 [inline] get_page_from_freelist+0x886/0x37a0 mm/page_alloc.c:3471 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 skb_clone+0x20c/0x390 net/core/skbuff.c:2084 dev_queue_xmit_nit+0x249/0xca0 net/core/dev.c:2315 xmit_one net/core/dev.c:3586 [inline] dev_hard_start_xmit+0x15f/0x7d0 net/core/dev.c:3606 sch_direct_xmit+0x29c/0x5d0 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3827 [inline] __dev_queue_xmit+0x1a8f/0x3f50 net/core/dev.c:4400 dev_queue_xmit include/linux/netdevice.h:3168 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236 ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0x12ca/0x1ef0 net/ipv4/ip_output.c:536 __tcp_transmit_skb+0x2582/0x3ba0 net/ipv4/tcp_output.c:1468 tcp_transmit_skb net/ipv4/tcp_output.c:1486 [inline] tcp_write_xmit+0x17b5/0x6bf0 net/ipv4/tcp_output.c:2829 __tcp_push_pending_frames+0x9b/0x360 net/ipv4/tcp_output.c:3012 tcp_push_pending_frames include/net/tcp.h:2107 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5741 [inline] tcp_rcv_established+0x1020/0x1f20 net/ipv4/tcp_input.c:6175 tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1916 tcp_v4_rcv+0x2dc0/0x37f0 net/ipv4/tcp_ipv4.c:2351 ip_protocol_deliver_rcu+0x22e/0x440 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 ip_local_deliver net/ipv4/ip_input.c:254 [inline] dst_input include/net/dst.h:460 [inline] ip_sublist_rcv_finish+0x3be/0x4f0 net/ipv4/ip_input.c:578 ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline] ip_sublist_rcv+0x75d/0xab0 net/ipv4/ip_input.c:636 ip_list_rcv+0x42b/0x480 net/ipv4/ip_input.c:670 __netif_receive_skb_list_ptype net/core/dev.c:5715 [inline] __netif_receive_skb_list_core+0x94e/0x980 net/core/dev.c:5762 __netif_receive_skb_list net/core/dev.c:5814 [inline] netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905 gro_normal_list include/net/gro.h:515 [inline] napi_complete_done+0x2b5/0x870 net/core/dev.c:6256 virtqueue_napi_complete drivers/net/virtio_net.c:759 [inline] virtnet_poll+0x2de9/0x39b0 drivers/net/virtio_net.c:3014 __napi_poll+0xcb/0x490 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7074 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 do_softirq+0x11b/0x1e0 kernel/softirq.c:462 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1359 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:726 sock_write_iter+0x2d7/0x3f0 net/socket.c:1147 new_sync_write fs/read_write.c:586 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:679 ksys_write+0x18f/0x2b0 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f62f1584790 Code: 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d b1 7d 1c 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 RSP: 002b:00007ffdeaa33468 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffdeaa339e0 RCX: 00007f62f1584790 RDX: 0000000000000038 RSI: 000055556cf16ac8 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00000000000003dc R09: 000055556cf1af50 R10: 000055556cf16704 R11: 0000000000000202 R12: 0000000000000038 R13: 000055556cf16ac8 R14: 0000000000000000 R15: 00007ffdeaa339c0 ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 ae b1 3a f6 call 0xf63ab1c2 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 52 jne 0x6d 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 53 57 a2 f5 call 0xf5a25782 <-- trapping instruction 2f: 65 8b 05 f4 aa 38 74 mov %gs:0x7438aaf4(%rip),%eax # 0x7438ab2a 36: 85 c0 test %eax,%eax 38: 74 43 je 0x7d 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss