ceph: No mds server is up or the cluster is laggy audit: type=1800 audit(1591523734.254:393): pid=32573 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=16994 res=0 ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:348 [inline] BUG: KASAN: slab-out-of-bounds in soft_cursor+0x448/0xa20 drivers/video/fbdev/core/softcursor.c:70 Read of size 28 at addr ffff88805334e010 by task syz-executor.1/32575 CPU: 1 PID: 32575 Comm: syz-executor.1 Not tainted 4.19.126-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 print_address_description.cold+0x54/0x222 mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report mm/kasan/report.c:412 [inline] kasan_report.cold+0x88/0x2b9 mm/kasan/report.c:396 memcpy+0x20/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:348 [inline] soft_cursor+0x448/0xa20 drivers/video/fbdev/core/softcursor.c:70 bit_cursor+0x1272/0x1890 drivers/video/fbdev/core/bitblit.c:386 fbcon_cursor+0x54f/0x760 drivers/video/fbdev/core/fbcon.c:1372 hide_cursor+0x85/0x2c0 drivers/tty/vt/vt.c:902 redraw_screen+0x2ed/0x870 drivers/tty/vt/vt.c:1006 vc_do_resize+0x108e/0x1380 drivers/tty/vt/vt.c:1317 vt_ioctl+0x1fa2/0x2500 drivers/tty/vt/vt_ioctl.c:901 tty_ioctl+0x7a5/0x1420 drivers/tty/tty_io.c:2669 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ca69 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2d74391c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f2b40 RCX: 000000000045ca69 RDX: 0000000020000180 RSI: 000000000000560a RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000673 R14: 00000000004c96c1 R15: 00007f2d743926d4 Allocated by task 6451: __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node+0x4c/0x70 mm/slab.c:3696 kmalloc_node include/linux/slab.h:557 [inline] kvmalloc_node+0x61/0xf0 mm/util.c:423 kvmalloc include/linux/mm.h:577 [inline] xt_alloc_table_info+0x3c/0xa0 net/netfilter/x_tables.c:1181 do_replace net/ipv6/netfilter/ip6_tables.c:1145 [inline] do_ip6t_set_ctl+0x214/0x425 net/ipv6/netfilter/ip6_tables.c:1684 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x6f/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt net/ipv6/ipv6_sockglue.c:943 [inline] ipv6_setsockopt+0x13c/0x170 net/ipv6/ipv6_sockglue.c:927 tcp_setsockopt net/ipv4/tcp.c:3095 [inline] tcp_setsockopt+0x86/0xd0 net/ipv4/tcp.c:3089 __sys_setsockopt+0x14d/0x240 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:1909 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 6451: __cache_free mm/slab.c:3503 [inline] kfree+0xce/0x220 mm/slab.c:3822 kvfree+0x59/0x60 mm/util.c:452 __do_replace+0x6a3/0x8a0 net/ipv6/netfilter/ip6_tables.c:1107 do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline] do_ip6t_set_ctl+0x2d2/0x425 net/ipv6/netfilter/ip6_tables.c:1684 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x6f/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt net/ipv6/ipv6_sockglue.c:943 [inline] ipv6_setsockopt+0x13c/0x170 net/ipv6/ipv6_sockglue.c:927 tcp_setsockopt net/ipv4/tcp.c:3095 [inline] tcp_setsockopt+0x86/0xd0 net/ipv4/tcp.c:3089 __sys_setsockopt+0x14d/0x240 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:1909 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88805334e180 which belongs to the cache kmalloc-2048 of size 2048 The buggy address is located 368 bytes to the left of 2048-byte region [ffff88805334e180, ffff88805334e980) The buggy address belongs to the page: page:ffffea00014cd380 count:1 mapcount:0 mapping:ffff88812c3dcc40 index:0x0 compound_mapcount: 0 flags: 0xfffe0000008100(slab|head) raw: 00fffe0000008100 ffffea0001633f88 ffffea00015eb288 ffff88812c3dcc40 raw: 0000000000000000 ffff88805334e180 0000000100000003 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88805334df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805334df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88805334e000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88805334e080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805334e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================