RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000020 R11: 0000000000000246 R12: 00007fee5b2b26d4 R13: 00000000004c2af2 R14: 00000000004d4148 R15: 0000000000000003 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 CPU: 0 PID: 11277 Comm: syz-executor2 Not tainted 4.19.0-next-20181029+ #100 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 CPU: 1 PID: 11282 Comm: syz-executor0 Not tainted 4.19.0-next-20181029+ #100 RIP: 0010:put_fs_context+0x31/0x5a0 fs/fs_context.c:487 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Code: 56 41 55 41 54 53 48 89 fb 4c 8d ab 98 00 00 00 48 83 ec 18 e8 10 25 9f ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 03 05 00 00 4c 8b a3 98 00 00 00 4d 85 e4 74 66 Call Trace: RSP: 0018:ffff880180dbfbd8 EFLAGS: 00010207 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: ffffc90006589000 RDX: 0000000000000011 RSI: ffffffff81e04360 RDI: fffffffffffffff4 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 RBP: ffff880180dbfc18 R08: ffff8801829023c0 R09: ffffed003b5c5b67 R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801ba968a30 R13: 000000000000008c R14: ffff8801c926e4c0 R15: 0000000000000000 FS: 00007fee5b2b2700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc670afc8c CR3: 00000001c247e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __should_failslab+0x124/0x180 mm/failslab.c:32 do_remount fs/namespace.c:2428 [inline] do_mount+0xda4/0x1ff0 fs/namespace.c:3020 should_failslab+0x9/0x14 mm/slab_common.c:1578 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x2be/0x730 mm/slab.c:3552 __d_alloc+0xc8/0xb90 fs/dcache.c:1599 ksys_mount+0x12d/0x140 fs/namespace.c:3245 __do_sys_mount fs/namespace.c:3259 [inline] __se_sys_mount fs/namespace.c:3256 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3256 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 d_alloc+0x96/0x380 fs/dcache.c:1678 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 d_alloc_name+0xbb/0x120 fs/dcache.c:1732 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fee5b2b1c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fee5b2b1c90 RCX: 0000000000457569 RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000020000040 simple_fill_super+0x463/0x600 fs/libfs.c:550 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 nfsd_fill_super+0x4f/0x60 fs/nfsd/nfsctl.c:1179 R10: 0000000000000020 R11: 0000000000000246 R12: 00007fee5b2b26d4 mount_ns+0x12e/0x1d0 fs/super.c:1190 R13: 00000000004c2af2 R14: 00000000004d4148 R15: 0000000000000003 nfsd_mount+0xa4/0xd0 fs/nfsd/nfsctl.c:1186 Modules linked in: kobject: 'loop3' (0000000081f57c9c): kobject_uevent_env kobject: 'loop3' (0000000081f57c9c): fill_kobj_path: path = '/devices/virtual/block/loop3' legacy_get_tree+0x12f/0x260 fs/fs_context.c:714 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1795 do_new_mount fs/namespace.c:2703 [inline] do_mount+0x82a/0x1ff0 fs/namespace.c:3029 kobject: 'loop5' (00000000a0e41d37): kobject_uevent_env kobject: 'loop5' (00000000a0e41d37): fill_kobj_path: path = '/devices/virtual/block/loop5' ksys_mount+0x12d/0x140 fs/namespace.c:3245 __do_sys_mount fs/namespace.c:3259 [inline] __se_sys_mount fs/namespace.c:3256 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3256 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe ---[ end trace 8e7b884adcd1ec3e ]--- RIP: 0033:0x457569 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7bc7b95c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7bc7b95c90 RCX: 0000000000457569 RIP: 0010:put_fs_context+0x31/0x5a0 fs/fs_context.c:487 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000040 RBP: 000000000072bf00 R08: 0000000020000100 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7bc7b966d4 R13: 00000000004c2af2 R14: 00000000004d4148 R15: 0000000000000003 kobject: 'loop0' (0000000039a53548): kobject_uevent_env Code: 56 41 55 41 54 53 48 89 fb 4c 8d ab 98 00 00 00 48 83 ec 18 e8 10 25 9f ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 03 05 00 00 4c 8b a3 98 00 00 00 4d 85 e4 74 66 kobject: 'loop0' (0000000039a53548): fill_kobj_path: path = '/devices/virtual/block/loop0' RSP: 0018:ffff880180dbfbd8 EFLAGS: 00010207 kobject: 'loop4' (00000000148e2204): kobject_uevent_env RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: ffffc90006589000 kobject: 'loop4' (00000000148e2204): fill_kobj_path: path = '/devices/virtual/block/loop4' RDX: 0000000000000011 RSI: ffffffff81e04360 RDI: fffffffffffffff4 RBP: ffff880180dbfc18 R08: ffff8801829023c0 R09: ffffed003b5c5b67 kobject: 'loop5' (00000000a0e41d37): kobject_uevent_env kobject: 'loop5' (00000000a0e41d37): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: BINDER_SET_CONTEXT_MGR already set kobject: 'loop1' (0000000025c74455): kobject_uevent_env R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801ba968a30 kobject: 'loop1' (0000000025c74455): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 11316:11319 ioctl 40046207 0 returned -16 R13: 000000000000008c R14: ffff8801c926e4c0 R15: 0000000000000000 kobject: 'loop3' (0000000081f57c9c): kobject_uevent_env FS: 00007fee5b2b2700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 kobject: 'loop3' (0000000081f57c9c): fill_kobj_path: path = '/devices/virtual/block/loop3' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa748285518 CR3: 00000001c247e000 CR4: 00000000001406f0 kobject: 'loop0' (0000000039a53548): kobject_uevent_env DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop0' (0000000039a53548): fill_kobj_path: path = '/devices/virtual/block/loop0' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop4' (00000000148e2204): kobject_uevent_env