__dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 kobject: 'loop2' (0000000054ca266e): fill_kobj_path: path = '/devices/virtual/block/loop2' should_failslab+0x9/0x14 mm/slab_common.c:1604 general protection fault: 0000 [#1] PREEMPT SMP KASAN slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3374 [inline] kmem_cache_alloc_trace+0x2d1/0x760 mm/slab.c:3613 CPU: 1 PID: 25589 Comm: kworker/1:5 Not tainted 5.0.0-rc7+ #85 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events hci_uart_write_work RIP: 0010:hci_uart_write_work+0x1b6/0x710 drivers/bluetooth/hci_ldisc.c:180 kmalloc include/linux/slab.h:545 [inline] kzalloc include/linux/slab.h:740 [inline] hci_alloc_dev+0x43/0x1d00 net/bluetooth/hci_core.c:3116 Code: 0f 85 6a 04 00 00 49 8b b4 24 c8 00 00 00 4c 89 ef e8 8e 63 53 02 89 c6 48 8b 45 d0 48 8d b8 5c 10 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1d hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:623 [inline] hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:693 [inline] hci_uart_tty_ioctl+0x321/0xa70 drivers/bluetooth/hci_ldisc.c:748 RSP: 0018:ffff888058dc7cb0 EFLAGS: 00010203 tty_ioctl+0xac9/0x14d0 drivers/tty/tty_io.c:2662 RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c RBP: ffff888058dc7d30 R08: ffff88804edc2200 R09: ffff88804edc2ac8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880806bc640 R13: ffff88808a0c5740 R14: ffff88809638dd68 R15: ffff8880806bc6b0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33424000 CR3: 000000003afaf000 CR4: 00000000001426e0 Call Trace: process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 worker_thread+0x98/0xe40 kernel/workqueue.c:2319 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fbf4eae1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fbf4eae1c90 RCX: 0000000000457e29 RDX: 0000000000000002 RSI: 00000000400455c8 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbf4eae26d4 R13: 00000000004c06b8 R14: 00000000004d23f0 R15: 0000000000000006 kobject: 'kvm' (00000000edbfa517): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6158 Comm: syz-executor.1 Tainted: G D 5.0.0-rc7+ #85 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+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3374 [inline] kmem_cache_alloc+0x47/0x6f0 mm/slab.c:3548 dst_alloc+0x10e/0x1d0 net/core/dst.c:105 rt_dst_alloc+0x83/0x3f0 net/ipv4/route.c:1569 __mkroute_output net/ipv4/route.c:2268 [inline] ip_route_output_key_hash_rcu+0x97d/0x30e0 net/ipv4/route.c:2495 ip_route_output_key_hash+0x212/0x380 net/ipv4/route.c:2324 icmp_route_lookup.constprop.0+0x450/0x1560 net/ipv4/icmp.c:489 icmp_send+0x957/0x1400 net/ipv4/icmp.c:714 ip_options_compile+0xd22/0x19b0 net/ipv4/ip_options.c:472 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.0+0x6d1/0x1b80 net/ipv4/ip_input.c:357 ip_rcv_finish+0x13f/0x2f0 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xe8/0x3f0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4973 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083 netif_receive_skb_internal+0x117/0x660 net/core/dev.c:5186 napi_frags_finish net/core/dev.c:5753 [inline] napi_gro_frags+0xade/0xd10 net/core/dev.c:5827 tun_get_user+0x28ae/0x3b20 drivers/net/tun.c:1974 tun_chr_write_iter+0xbd/0x160 drivers/net/tun.c:2019 call_write_iter include/linux/fs.h:1863 [inline] do_iter_readv_writev+0x5e0/0x8e0 fs/read_write.c:680 do_iter_write fs/read_write.c:956 [inline] do_iter_write+0x184/0x610 fs/read_write.c:937 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1001 do_writev+0xf6/0x290 fs/read_write.c:1036 __do_sys_writev fs/read_write.c:1109 [inline] __se_sys_writev fs/read_write.c:1106 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1106 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ce1 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 b9 fb ff c3 48 83 ec 08 e8 1a 2d 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 63 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f96a931aba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000003a RCX: 0000000000457ce1 RDX: 0000000000000001 RSI: 00007f96a931abf0 RDI: 00000000000000f0 RBP: 0000000020000000 R08: 00000000000000f0 R09: 0000000000000000 R10: 0000000000000064 R11: 0000000000000293 R12: 00007f96a931b6d4 R13: 00000000004c64e1 R14: 00000000004db9c0 R15: 0000000000000004 kobject: 'loop2' (0000000054ca266e): kobject_uevent_env kobject: 'loop2' (0000000054ca266e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000002b16846e): kobject_uevent_env kobject: 'kvm' (00000000edbfa517): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (000000002b16846e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000edbfa517): kobject_uevent_env kobject: 'kvm' (00000000edbfa517): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (0000000054ca266e): kobject_uevent_env kobject: 'loop2' (0000000054ca266e): fill_kobj_path: path = '/devices/virtual/block/loop2' ---[ end trace 95740d5a82159c73 ]--- RIP: 0010:hci_uart_write_work+0x1b6/0x710 drivers/bluetooth/hci_ldisc.c:180 Code: 0f 85 6a 04 00 00 49 8b b4 24 c8 00 00 00 4c 89 ef e8 8e 63 53 02 89 c6 48 8b 45 d0 48 8d b8 5c 10 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1d Bluetooth: Can't allocate HCI device kobject: 'loop2' (0000000054ca266e): kobject_uevent_env kobject: 'loop2' (0000000054ca266e): fill_kobj_path: path = '/devices/virtual/block/loop2' RSP: 0018:ffff888058dc7cb0 EFLAGS: 00010203 RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c RBP: ffff888058dc7d30 R08: ffff88804edc2200 R09: ffff88804edc2ac8 kobject: 'loop2' (0000000054ca266e): kobject_uevent_env kobject: 'kvm' (00000000edbfa517): kobject_uevent_env kobject: 'loop2' (0000000054ca266e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000edbfa517): fill_kobj_path: path = '/devices/virtual/misc/kvm' R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880806bc640 R13: ffff88808a0c5740 R14: ffff88809638dd68 R15: ffff8880806bc6b0 kobject: 'loop3' (000000002b16846e): kobject_uevent_env kobject: 'loop5' (0000000087e973b1): kobject_uevent_env FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 kobject: 'loop3' (000000002b16846e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000087e973b1): fill_kobj_path: path = '/devices/virtual/block/loop5' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 hfsplus: unable to find HFS+ superblock CR2: 00000000004dbcd8 CR3: 000000003afaf000 CR4: 00000000001406e0