============================= [ BUG: Invalid wait context ] 6.12.0-rc5-next-20241101-syzkaller #0 Not tainted ----------------------------- syz.4.119/6284 is trying to lock: ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue_bulk mm/page_alloc.c:2328 [inline] ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: __rmqueue_pcplist+0x4c6/0x2b70 mm/page_alloc.c:3022 other info that might help us debug this: context-{2:2} 4 locks held by syz.4.119/6284: #0: ffff888061dd37d8 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{4:4}, at: xfrm_netlink_rcv+0x6a/0x90 net/xfrm/xfrm_user.c:3342 #1: ffffffff8e8154a0 (console_lock){+.+.}-{0:0}, at: _printk+0xd5/0x120 kernel/printk/printk.c:2450 #2: ffffffff8e8150b0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:342 [inline] #2: ffffffff8e8150b0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:303 [inline] #2: ffffffff8e8150b0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] #2: ffffffff8e8150b0 (console_srcu){....}-{0:0}, at: console_flush_all+0x1a3/0xeb0 kernel/printk/printk.c:3175 #3: ffff8880b8744818 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #3: ffff8880b8744818 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3051 [inline] #3: ffff8880b8744818 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3095 [inline] #3: ffff8880b8744818 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x7e2/0x3870 mm/page_alloc.c:3492 stack backtrace: CPU: 1 UID: 0 PID: 6284 Comm: syz.4.119 Not tainted 6.12.0-rc5-next-20241101-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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_bulk mm/page_alloc.c:2328 [inline] __rmqueue_pcplist+0x4c6/0x2b70 mm/page_alloc.c:3022 rmqueue_pcplist mm/page_alloc.c:3064 [inline] rmqueue mm/page_alloc.c:3095 [inline] get_page_from_freelist+0x895/0x3870 mm/page_alloc.c:3492 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4771 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 stack_depot_save_flags+0x666/0x830 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 __run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1219 [inline] run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1418 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:1691 [inline] __hrtimer_run_queues+0x551/0xd50 kernel/time/hrtimer.c:1755 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817 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+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0x996/0xeb0 Code: 48 21 c3 0f 85 16 02 00 00 e8 c6 b9 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 b7 b9 20 00 eb 06 e8 b0 b9 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 d6 fd 8a 00 4c 8b RSP: 0018:ffffc9000b9a6d00 EFLAGS: 00000287 RAX: ffffffff81750450 RBX: ffffffff8f17c378 RCX: 0000000000040000 RDX: ffffc9000515d000 RSI: 0000000000002694 RDI: 0000000000002695 RBP: ffffc9000b9a6eb0 R08: ffffffff81750427 R09: 1ffffffff285a308 R10: dffffc0000000000 R11: fffffbfff285a309 R12: ffffffff8f17c320 R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc9000b9a6f00 __console_flush_and_unlock kernel/printk/printk.c:3257 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3297 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2425 _printk+0xd5/0x120 kernel/printk/printk.c:2450 __nla_validate_parse+0x282e/0x3090 lib/nlattr.c:647 __nla_parse+0x40/0x60 lib/nlattr.c:732 __nlmsg_parse include/net/netlink.h:761 [inline] nlmsg_parse_deprecated include/net/netlink.h:802 [inline] xfrm_user_rcv_msg+0x612/0xa80 net/xfrm/xfrm_user.c:3304 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3343 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2609 ___sys_sendmsg net/socket.c:2663 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2692 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: 0033:0x7f966877e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9669507038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9668935f80 RCX: 00007f966877e719 RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000003 RBP: 00007f96687f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9668935f80 R15: 00007ffe83be0f78 vkms_vblank_simulate: vblank timer overrun ---------------- Code disassembly (best guess): 0: 48 21 c3 and %rax,%rbx 3: 0f 85 16 02 00 00 jne 0x21f 9: e8 c6 b9 20 00 call 0x20b9d4 e: 4c 8b 7c 24 10 mov 0x10(%rsp),%r15 13: 4d 85 f6 test %r14,%r14 16: 75 07 jne 0x1f 18: e8 b7 b9 20 00 call 0x20b9d4 1d: eb 06 jmp 0x25 1f: e8 b0 b9 20 00 call 0x20b9d4 24: fb sti 25: 48 8b 5c 24 18 mov 0x18(%rsp),%rbx * 2a: 48 8b 44 24 30 mov 0x30(%rsp),%rax <-- trapping instruction 2f: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 34: 74 08 je 0x3e 36: 48 89 df mov %rbx,%rdi 39: e8 d6 fd 8a 00 call 0x8afe14 3e: 4c rex.WR 3f: 8b .byte 0x8b