kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN kobject: 'kvm' (00000000374c9a1b): kobject_uevent_env CPU: 0 PID: 7594 Comm: kworker/0:3 Not tainted 5.0.0-rc6+ #72 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events hci_uart_write_work kobject: 'kvm' (00000000374c9a1b): fill_kobj_path: path = '/devices/virtual/misc/kvm' 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 9e 80 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 RSP: 0018:ffff888084aa7cb0 EFLAGS: 00010203 Bluetooth: Can't allocate HCI device RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000 kobject: 'kvm' (00000000374c9a1b): kobject_uevent_env RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c RBP: ffff888084aa7d30 R08: ffff88808618a240 R09: ffff88808618ab08 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880876dd440 R13: ffff88808ec85100 R14: ffff8880a4476328 R15: ffff8880876dd4b0 Bluetooth: Invalid header checksum FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000afa978 CR3: 00000000a8afd000 CR4: 00000000001426f0 kobject: 'kvm' (00000000374c9a1b): fill_kobj_path: path = '/devices/virtual/misc/kvm' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 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: Bluetooth: Invalid header checksum ---[ end trace cae38534f52e05ee ]--- 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 9e 80 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 kobject: 'loop3' (000000007827188d): kobject_uevent_env RSP: 0018:ffff888084aa7cb0 EFLAGS: 00010203 RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000 kobject: '(null)' (0000000028fa2626): kobject_cleanup, parent (null) kobject: 'loop3' (000000007827188d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '(null)' (0000000028fa2626): calling ktype release RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 RBP: ffff888084aa7d30 R08: ffff88808618a240 R09: ffff88808618ab08 CPU: 1 PID: 8716 Comm: syz-executor.3 Tainted: G D 5.0.0-rc6+ #72 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 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880876dd440 R13: ffff88808ec85100 R14: ffff8880a4476328 R15: ffff8880876dd4b0 __should_fail_alloc_page mm/page_alloc.c:3152 [inline] should_fail_alloc_page+0x50/0x60 mm/page_alloc.c:3199 prepare_alloc_pages mm/page_alloc.c:4476 [inline] __alloc_pages_nodemask+0x1a1/0x710 mm/page_alloc.c:4523 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1398 [inline] cache_grow_begin+0x9c/0x8c0 mm/slab.c:2666 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 cache_alloc_refill mm/slab.c:3033 [inline] ____cache_alloc mm/slab.c:3116 [inline] ____cache_alloc mm/slab.c:3099 [inline] __do_cache_alloc mm/slab.c:3338 [inline] slab_alloc mm/slab.c:3373 [inline] kmem_cache_alloc_trace+0x67f/0x760 mm/slab.c:3607 CR2: 00007fdc2c933000 CR3: 0000000088388000 CR4: 00000000001406f0 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 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 kobject: 'integrity' (00000000beef12c9): kobject_uevent_env tty_ioctl+0xac9/0x14d0 drivers/tty/tty_io.c:2662 kobject: 'integrity' (00000000beef12c9): kobject_uevent_env: filter function caused the event to drop! DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'integrity' (00000000beef12c9): kobject_cleanup, parent (null) DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 kobject: 'integrity' (00000000beef12c9): does not have a release() function, it is broken and must be fixed. See Documentation/kobject.txt.