netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. syz-executor.4: vmalloc: allocation failure: 0 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) ============================= WARNING: suspicious RCU usage 4.14.153+ #0 Not tainted ----------------------------- include/linux/radix-tree.h:238 suspicious rcu_dereference_check() usage! CPU: 0 PID: 18835 Comm: syz-executor.4 Not tainted 4.14.153+ #0 other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 Call Trace: 2 locks held by syz-executor.2/18836: #0: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 ( warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3319 &sb->s_type->i_mutex_key #10){+.+.} , at: [<00000000602c5ea3>] inode_lock include/linux/fs.h:724 [inline] , at: [<00000000602c5ea3>] shmem_add_seals+0x12b/0xf80 mm/shmem.c:2831 #1: ( __vmalloc_node_range mm/vmalloc.c:1796 [inline] __vmalloc_node_range+0x3b5/0x6d0 mm/vmalloc.c:1756 &(&mapping->tree_lock)->rlock ){-.-.} , at: [<00000000ccd247a7>] spin_lock_irq include/linux/spinlock.h:342 [inline] , at: [<00000000ccd247a7>] shmem_tag_pins mm/shmem.c:2685 [inline] , at: [<00000000ccd247a7>] shmem_wait_for_pins mm/shmem.c:2726 [inline] , at: [<00000000ccd247a7>] shmem_add_seals+0x2e1/0xf80 mm/shmem.c:2843 stack backtrace: __vmalloc_node mm/vmalloc.c:1825 [inline] __vmalloc_node_flags mm/vmalloc.c:1839 [inline] vmalloc+0x60/0x80 mm/vmalloc.c:1861 sel_write_load+0x199/0xfb0 security/selinux/selinuxfs.c:495 __vfs_write+0xf9/0x5a0 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f3003e0ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3003e0f6d4 R13: 00000000004cac50 R14: 00000000004e3180 R15: 00000000ffffffff CPU: 1 PID: 18836 Comm: syz-executor.2 Not tainted 4.14.153+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 radix_tree_deref_slot include/linux/radix-tree.h:238 [inline] shmem_tag_pins mm/shmem.c:2687 [inline] shmem_wait_for_pins mm/shmem.c:2726 [inline] shmem_add_seals+0x9d2/0xf80 mm/shmem.c:2843 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 shmem_fcntl+0xea/0x120 mm/shmem.c:2878 do_fcntl+0x5c8/0xd20 fs/fcntl.c:421 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=115 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 SYSC_fcntl fs/fcntl.c:463 [inline] SyS_fcntl+0xc6/0x100 fs/fcntl.c:448 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 RSP: 002b:00007f48f9320c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000048 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000009 RSI: 0000000000000409 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48f93216d4 R13: 00000000004c0c3d R14: 00000000004d3820 R15: 00000000ffffffff SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 syz-executor.4: vmalloc: allocation failure: 0 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 CPU: 0 PID: 18861 Comm: syz-executor.4 Not tainted 4.14.153+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3319 __vmalloc_node_range mm/vmalloc.c:1796 [inline] __vmalloc_node_range+0x3b5/0x6d0 mm/vmalloc.c:1756 __vmalloc_node mm/vmalloc.c:1825 [inline] __vmalloc_node_flags mm/vmalloc.c:1839 [inline] vmalloc+0x60/0x80 mm/vmalloc.c:1861 sel_write_load+0x199/0xfb0 security/selinux/selinuxfs.c:495 __vfs_write+0xf9/0x5a0 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f3003dedc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000006 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3003dee6d4 R13: 00000000004cac50 R14: 00000000004e3180 R15: 00000000ffffffff SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18839 comm=syz-executor.0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18876 comm=syz-executor.0 warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:194718 inactive_anon:25040 isolated_anon:0 active_file:29593 inactive_file:15539 isolated_file:0 unevictable:0 dirty:251 writeback:0 unstable:0 slab_reclaimable:10073 slab_unreclaimable:63859 mapped:59624 shmem:589 pagetables:12654 bounce:0 free:1218250 free_pcp:435 free_cma:0 Node 0 active_anon:778916kB inactive_anon:100132kB active_file:118376kB inactive_file:62100kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:238396kB dirty:1032kB writeback:64kB shmem:2340kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no DMA32 free:3073968kB min:4792kB low:7868kB high:10944kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3079672kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:724kB local_pcp:724kB free_cma:0kB lowmem_reserve[]: 0 3437 3437 Normal free:1799228kB min:5480kB low:9000kB high:12520kB active_anon:778680kB inactive_anon:100152kB active_file:118412kB inactive_file:62076kB unevictable:0kB writepending:1068kB present:4718592kB managed:3521556kB mlocked:0kB kernel_stack:18944kB pagetables:50556kB bounce:0kB free_pcp:1132kB local_pcp:392kB free_cma:0kB lowmem_reserve[]: 0 0 0 DMA32: 2*4kB (UM) 1*8kB (U) 2*16kB (UM) 2*32kB (U) 3*64kB (UM) 3*128kB (UM) 3*256kB (UM) 1*512kB (M) 4*1024kB (UM) 2*2048kB (UM) 748*4096kB (UM) = 3073968kB Normal: 300*4kB (UME) 405*8kB (UME) 895*16kB (UE) 116*32kB (UE) 51*64kB (UE) 67*128kB (UME) 129*256kB (UME) 187*512kB (UME) 146*1024kB (UM) 74*2048kB (UM) 326*4096kB (UM) = 1799432kB 45638 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 315672 pages reserved SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy : renamed from ip_vti0 SELinux: failed to load policy EXT4-fs warning (device sda1): ext4_group_add:1615: No reserved GDT blocks, can't resize SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy sel_write_load: 5 callbacks suppressed SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy