R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff58d1fecf R14: 00007feac8888300 R15: 0000000000022000 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 29178 Comm: syz-executor.0 Not tainted 4.14.228-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880977c2340 task.stack: ffff88805c650000 RIP: 0010:sysfs_do_create_link_sd+0x56/0x120 fs/sysfs/symlink.c:35 RSP: 0000:ffff88805c657b48 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000010 RCX: 0000000000006829 RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000040 RBP: ffffffff87cbae60 R08: ffffffff8b9c1c08 R09: 00000000000400c6 R10: ffff8880977c2bf0 R11: ffff8880977c2340 R12: ffff88807279d540 R13: ffffffff87cbae60 R14: 0000000000000001 R15: ffff8880b56e0ddc FS: 00007feac8888700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc595566010 CR3: 00000000a0c7d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sysfs_do_create_link fs/sysfs/symlink.c:80 [inline] sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:92 device_add_disk+0x9f8/0xdc0 block/genhd.c:691 add_disk include/linux/genhd.h:396 [inline] loop_add+0x615/0x830 drivers/block/loop.c:1904 loop_control_ioctl+0x11a/0x3f0 drivers/block/loop.c:2001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 CPU: 0 PID: 29213 Comm: syz-executor.1 Not tainted 4.14.228-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 entry_SYSCALL_64_after_hwframe+0x46/0xbb skb_clone+0x126/0x9a0 net/core/skbuff.c:1291 RIP: 0033:0x466459 __netlink_deliver_tap_skb net/netlink/af_netlink.c:266 [inline] __netlink_deliver_tap net/netlink/af_netlink.c:291 [inline] netlink_deliver_tap+0x655/0x7d0 net/netlink/af_netlink.c:302 RSP: 002b:00007feac8888188 EFLAGS: 00000246 __netlink_sendskb net/netlink/af_netlink.c:1231 [inline] netlink_sendskb+0x45/0xd0 net/netlink/af_netlink.c:1240 ORIG_RAX: 0000000000000010 netlink_unicast+0x50a/0x610 net/netlink/af_netlink.c:1328 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 RBP: 00007feac88881d0 R08: 0000000000000000 R09: 0000000000000000 netlink_ack+0x514/0x9a0 net/netlink/af_netlink.c:2403 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff58d1fecf R14: 00007feac8888300 R15: 0000000000022000 netlink_rcv_skb+0x2c5/0x390 net/netlink/af_netlink.c:2439 Code: 84 a1 00 00 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 00 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 e8 4b a6 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 b1 ff 48 c7 c7 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 80 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 c3 04 89 e8 df c7 7e 05 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 48 8d 7b 30 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 48 b8 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 00 entry_SYSCALL_64_after_hwframe+0x46/0xbb 00 RIP: 0033:0x466459 00 RSP: 002b:00007facd1aa0188 EFLAGS: 00000246 00 ORIG_RAX: 000000000000002e 00 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 fc RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 ff RBP: 00007facd1aa01d0 R08: 0000000000000000 R09: 0000000000000000 df R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 48 R13: 00007ffd5a36d17f R14: 00007facd1aa0300 R15: 0000000000022000 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a7 00 00 00 4c 8b 6b 30 4d 85 ed 74 4f e8 12 RIP: sysfs_do_create_link_sd+0x56/0x120 fs/sysfs/symlink.c:35 RSP: ffff88805c657b48 ---[ end trace 0e836d0963d1f7af ]---