kasan: CONFIG_KASAN_INLINE enabled IPVS: ftp: loaded support on port[0] = 21 kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN kobject: 'loop0' (0000000076e4a3b7): kobject_uevent_env CPU: 1 PID: 12582 Comm: syz-executor2 Not tainted 4.20.0-rc7-next-20181224 #190 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:transparent_hugepage_enabled+0x8c/0x5e0 mm/huge_memory.c:69 Code: 80 3c 02 00 0f 85 ae 04 00 00 4c 8b a3 a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 b8 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 91 04 00 00 49 8b bc 24 b8 01 00 00 e8 2d 70 e6 RSP: 0018:ffff888059ddf1b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88809e1a7040 RCX: ffffc90009e0b000 RDX: 0000000000000037 RSI: ffffffff81c8f3ea RDI: 00000000000001b8 kobject: 'lo' (000000000cf52537): kobject_add_internal: parent: 'net', set: 'devices' RBP: ffff888059ddf1e0 R08: ffffed1012eb7d15 R09: ffffed1012eb7d14 R10: ffffed1012eb7d14 R11: ffff8880975be8a7 R12: 0000000000000000 R13: ffff88809e1a70e0 R14: 0000000000000544 R15: 0000000000000e6c FS: 00007f2763448700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007febeef2aa20 CR3: 00000000990a9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: show_smap+0x167/0x580 fs/proc/task_mmu.c:805 kobject: 'loop0' (0000000076e4a3b7): fill_kobj_path: path = '/devices/virtual/block/loop0' seq_read+0xb81/0x1150 fs/seq_file.c:268 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x4bc/0x670 fs/read_write.c:924 vfs_readv+0x175/0x1c0 fs/read_write.c:986 kobject: 'lo' (000000000cf52537): kobject_uevent_env kobject: 'lo' (000000000cf52537): fill_kobj_path: path = '/devices/virtual/net/lo' kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x539/0xb20 fs/splice.c:417 kobject: 'queues' (00000000d91649ae): kobject_add_internal: parent: 'lo', set: '' kobject: 'queues' (00000000d91649ae): kobject_uevent_env kobject: 'queues' (00000000d91649ae): kobject_uevent_env: filter function caused the event to drop! do_splice_to+0x12e/0x190 fs/splice.c:880 splice_direct_to_actor+0x31c/0x9d0 fs/splice.c:957 do_splice_direct+0x2d4/0x420 fs/splice.c:1066 kobject: 'rx-0' (00000000f945c3c9): kobject_add_internal: parent: 'queues', set: 'queues' do_sendfile+0x62a/0xe50 fs/read_write.c:1439 kobject: 'rx-0' (00000000f945c3c9): kobject_uevent_env __do_sys_sendfile64 fs/read_write.c:1500 [inline] __se_sys_sendfile64 fs/read_write.c:1486 [inline] __x64_sys_sendfile64+0x1fd/0x250 fs/read_write.c:1486 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'rx-0' (00000000f945c3c9): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 kobject: 'tx-0' (0000000084c0c693): kobject_add_internal: parent: 'queues', set: 'queues' Code: 6d 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2763447c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000088001 R11: 0000000000000246 R12: 00007f27634486d4 R13: 00000000004c4b6b R14: 00000000004d8278 R15: 00000000ffffffff Modules linked in: ---[ end trace 3a374f3a48c75fc4 ]--- kobject: 'tx-0' (0000000084c0c693): kobject_uevent_env RIP: 0010:transparent_hugepage_enabled+0x8c/0x5e0 mm/huge_memory.c:69 kobject: 'loop1' (000000000f712205): kobject_uevent_env Code: 80 3c 02 00 0f 85 ae 04 00 00 4c 8b a3 a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 b8 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 91 04 00 00 49 8b bc 24 b8 01 00 00 e8 2d 70 e6 kobject: 'loop1' (000000000f712205): fill_kobj_path: path = '/devices/virtual/block/loop1' RSP: 0018:ffff888059ddf1b8 EFLAGS: 00010202 kobject: 'tx-0' (0000000084c0c693): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' RAX: dffffc0000000000 RBX: ffff88809e1a7040 RCX: ffffc90009e0b000 RDX: 0000000000000037 RSI: ffffffff81c8f3ea RDI: 00000000000001b8 kobject: 'batman_adv' (00000000ecb4f6b9): kobject_uevent_env RBP: ffff888059ddf1e0 R08: ffffed1012eb7d15 R09: ffffed1012eb7d14 kobject: 'batman_adv' (00000000ecb4f6b9): kobject_uevent_env: filter function caused the event to drop! R10: ffffed1012eb7d14 R11: ffff8880975be8a7 R12: 0000000000000000 kobject: 'batman_adv' (00000000ecb4f6b9): kobject_cleanup, parent (null) R13: ffff88809e1a70e0 R14: 0000000000000544 R15: 0000000000000e6c kobject: 'batman_adv' (00000000ecb4f6b9): calling ktype release FS: 00007f2763448700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 kobject: (00000000ecb4f6b9): dynamic_kobj_release CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'batman_adv': free name CR2: 00007fc543d1a518 CR3: 00000000990a9000 CR4: 00000000001406e0 kobject: 'loop0' (0000000076e4a3b7): kobject_uevent_env DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop0' (0000000076e4a3b7): fill_kobj_path: path = '/devices/virtual/block/loop0' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'rx-0' (000000001db9ef8e): kobject_cleanup, parent 000000007361207d