FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Restarting kernel threads ... done. INFO: trying to register non-static key. the code is fine but needs lockdep annotation. Restarting kernel threads ... turning off the locking correctness validator. CPU: 1 PID: 8856 Comm: syz-executor.2 Not tainted 4.14.140 #36 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+0x138/0x197 lib/dump_stack.c:53 done. register_lock_class+0x2fd/0x1730 kernel/locking/lockdep.c:768 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env __lock_acquire+0x147/0x4620 kernel/locking/lockdep.c:3374 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... done. lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3991 Restarting kernel threads ... flush_work+0xae/0x730 kernel/workqueue.c:2881 done. kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' __cancel_work_timer+0x2f0/0x480 kernel/workqueue.c:2956 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env cancel_work_sync+0x18/0x20 kernel/workqueue.c:2992 smc_close_active+0x68e/0xba0 net/smc/smc_close.c:206 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' smc_release+0x45a/0x630 net/smc/af_smc.c:131 __sock_release+0xce/0x2b0 net/socket.c:602 sock_close+0x1b/0x30 net/socket.c:1139 Restarting kernel threads ... __fput+0x275/0x7a0 fs/file_table.c:210 ____fput+0x16/0x20 fs/file_table.c:244 task_work_run+0x114/0x190 kernel/task_work.c:113 done. tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 Restarting kernel threads ... entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 done. RSP: 002b:00007f63b6316c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63b63176d4 R13: 00000000004f9012 R14: 00000000004d1b10 R15: 00000000ffffffff kobject: 'loop0' (ffff88805875c960): kobject_uevent_env CPU: 0 PID: 8855 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616 kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] alloc_super fs/super.c:197 [inline] sget_userns+0xfe/0xc30 fs/super.c:516 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env sget+0xd6/0x120 fs/super.c:572 mount_nodev+0x31/0xf0 fs/super.c:1175 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env done. kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env done. kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' Restarting kernel threads ... done. kobject: 'loop0' (ffff88805875c960): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' CPU: 0 PID: 8919 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env 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+0x138/0x197 lib/dump_stack.c:53 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env alloc_pages_current+0xec/0x1e0 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:497 [inline] __get_free_pages+0xf/0x40 mm/page_alloc.c:4226 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' get_zeroed_page+0x11/0x20 mm/page_alloc.c:4235 selinux_sb_copy_data+0x2a/0x390 security/selinux/hooks.c:2722 security_sb_copy_data+0x75/0xb0 security/security.c:368 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env mount_fs+0x1ec/0x2a1 fs/super.c:1232 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' CPU: 0 PID: 8940 Comm: syz-executor.3 Not tainted 4.14.140 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] superblock_alloc_security security/selinux/hooks.c:390 [inline] selinux_sb_alloc_security+0x46/0x220 security/selinux/hooks.c:2655 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' security_sb_alloc+0x6d/0xa0 security/security.c:358 alloc_super fs/super.c:207 [inline] sget_userns+0x196/0xc30 fs/super.c:516 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env sget+0xd6/0x120 fs/super.c:572 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' mount_nodev+0x31/0xf0 fs/super.c:1175 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' Restarting kernel threads ... done. kobject: 'loop2' (ffff8880a4a74b20): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (ffff8880a4a74b20): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env FAT-fs (loop2): bogus number of reserved sectors kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' FAT-fs (loop2): Can't find a valid FAT filesystem Restarting kernel threads ... done. CPU: 1 PID: 8970 Comm: syz-executor.3 Not tainted 4.14.140 #36 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] __list_lru_init+0x6b/0x660 mm/list_lru.c:539 alloc_super fs/super.c:229 [inline] sget_userns+0x4e0/0xc30 fs/super.c:516 sget+0xd6/0x120 fs/super.c:572 mount_nodev+0x31/0xf0 fs/super.c:1175 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a74b20): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a4a74b20): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' Restarting kernel threads ... done. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Restarting kernel threads ... done. kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... done. CPU: 0 PID: 9007 Comm: syz-executor.3 Not tainted 4.14.140 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Restarting kernel threads ... Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 done. kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] __list_lru_init+0x6b/0x660 mm/list_lru.c:539 alloc_super fs/super.c:231 [inline] sget_userns+0x500/0xc30 fs/super.c:516 sget+0xd6/0x120 fs/super.c:572 Restarting kernel threads ... done. mount_nodev+0x31/0xf0 fs/super.c:1175 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 Restarting kernel threads ... done. SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env Restarting kernel threads ... done. kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 1 PID: 9057 Comm: syz-executor.3 Not tainted 4.14.140 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env Call Trace: kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] register_shrinker+0xbd/0x220 mm/vmscan.c:284 sget_userns+0x9bf/0xc30 fs/super.c:535 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' sget+0xd6/0x120 fs/super.c:572 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env mount_nodev+0x31/0xf0 fs/super.c:1175 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env Restarting kernel threads ... done. kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' CPU: 1 PID: 9083 Comm: syz-executor.3 Not tainted 4.14.140 #36 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kmalloc include/linux/slab.h:493 [inline] match_number.isra.0+0x86/0x1e0 lib/parser.c:136 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' match_octal+0x44/0x60 lib/parser.c:227 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env parse_fuse_opt fs/fuse/inode.c:508 [inline] fuse_fill_super+0x3cc/0x15b0 fs/fuse/inode.c:1067 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' entry_SYSCALL_64_after_hwframe+0x42/0xb7 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 Restarting kernel threads ... kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env done. kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' Restarting kernel threads ... kobject: 'loop0' (ffff88805875c960): kobject_uevent_env done. kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' CPU: 1 PID: 9120 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kmalloc include/linux/slab.h:493 [inline] match_number.isra.0+0x86/0x1e0 lib/parser.c:136 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' match_octal+0x44/0x60 lib/parser.c:227 parse_fuse_opt fs/fuse/inode.c:508 [inline] fuse_fill_super+0x3cc/0x15b0 fs/fuse/inode.c:1067 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env mount_nodev+0x52/0xf0 fs/super.c:1180 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env Restarting kernel threads ... done. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 0 PID: 9162 Comm: syz-executor.3 Not tainted 4.14.140 #36 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] match_strdup+0x5f/0xa0 lib/parser.c:331 fuse_match_uint+0x1b/0x60 fs/fuse/inode.c:475 parse_fuse_opt fs/fuse/inode.c:526 [inline] fuse_fill_super+0x237/0x15b0 fs/fuse/inode.c:1067 mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 Restarting kernel threads ... vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 done. SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Restarting kernel threads ... done. CPU: 0 PID: 9200 Comm: syz-executor.3 Not tainted 4.14.140 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2f0/0x7a0 mm/slab.c:3729 Restarting kernel threads ... kmalloc include/linux/slab.h:493 [inline] match_strdup+0x5f/0xa0 lib/parser.c:331 fuse_match_uint+0x1b/0x60 fs/fuse/inode.c:475 parse_fuse_opt fs/fuse/inode.c:526 [inline] fuse_fill_super+0x237/0x15b0 fs/fuse/inode.c:1067 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env done. kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 Restarting kernel threads ... done. kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 9247 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env 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+0x138/0x197 lib/dump_stack.c:53 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616 Restarting kernel threads ... kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] fuse_dev_alloc+0x4e/0x310 fs/fuse/inode.c:1020 done. fuse_fill_super+0x776/0x15b0 fs/fuse/inode.c:1104 Restarting kernel threads ... done. mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' syz-executor.4 (9204) used greatest stack depth: 23720 bytes left kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' Restarting kernel threads ... done. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env CPU: 1 PID: 9277 Comm: syz-executor.3 Not tainted 4.14.140 #36 Restarting kernel threads ... 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node_trace+0x280/0x770 mm/slab.c:3659 kmalloc_node include/linux/slab.h:526 [inline] bdi_alloc_node+0x64/0x2e0 mm/backing-dev.c:859 bdi_alloc include/linux/backing-dev.h:39 [inline] super_setup_bdi_name+0x8b/0x220 fs/super.c:1290 done. fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 done. vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' Restarting kernel threads ... done. Restarting kernel threads ... done. Restarting kernel threads ... done. Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' CPU: 1 PID: 9320 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env 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+0x138/0x197 lib/dump_stack.c:53 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] wb_congested_get_create+0x15b/0x360 mm/backing-dev.c:447 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' wb_init+0x502/0x7c0 mm/backing-dev.c:318 cgwb_bdi_init+0xe7/0x1f0 mm/backing-dev.c:689 bdi_init mm/backing-dev.c:850 [inline] bdi_alloc_node+0x22b/0x2e0 mm/backing-dev.c:864 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env bdi_alloc include/linux/backing-dev.h:39 [inline] super_setup_bdi_name+0x8b/0x220 fs/super.c:1290 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 done. entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... done. kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env Restarting kernel threads ... done. kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env CPU: 0 PID: 9354 Comm: syz-executor.3 Not tainted 4.14.140 #36 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616 kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] wb_congested_get_create+0x15b/0x360 mm/backing-dev.c:447 wb_init+0x502/0x7c0 mm/backing-dev.c:318 cgwb_bdi_init+0xe7/0x1f0 mm/backing-dev.c:689 bdi_init mm/backing-dev.c:850 [inline] bdi_alloc_node+0x22b/0x2e0 mm/backing-dev.c:864 bdi_alloc include/linux/backing-dev.h:39 [inline] super_setup_bdi_name+0x8b/0x220 fs/super.c:1290 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 Restarting kernel threads ... done. kobject: 'loop2' (ffff8880a4a74b20): kobject_uevent_env mount_nodev+0x52/0xf0 fs/super.c:1180 kobject: 'loop2' (ffff8880a4a74b20): fill_kobj_path: path = '/devices/virtual/block/loop2' fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 Restarting kernel threads ... done. kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... done. kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a74b20): kobject_uevent_env kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (ffff8880a4a74b20): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a4a74b20): kobject_uevent_env kobject: 'loop2' (ffff8880a4a74b20): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' Restarting kernel threads ... kobject: 'loop2' (ffff8880a4a74b20): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a74b20): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' done. kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' CPU: 1 PID: 9403 Comm: syz-executor.3 Not tainted 4.14.140 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc_track_caller+0x2ec/0x790 mm/slab.c:3735 kvasprintf+0xa7/0x110 lib/kasprintf.c:25 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kvasprintf_const+0x5a/0x170 lib/kasprintf.c:49 kobject_set_name_vargs+0x5b/0x150 lib/kobject.c:263 device_create_groups_vargs+0x1a8/0x250 drivers/base/core.c:2449 device_create_vargs+0x45/0x60 drivers/base/core.c:2493 bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 super_setup_bdi_name+0x123/0x220 fs/super.c:1297 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 Restarting kernel threads ... done. kobject: '(null)' (ffff88805ba7e5d0): kobject_cleanup, parent (null) kobject: '(null)' (ffff88805ba7e5d0): calling ktype release kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env mmap: syz-executor.2 (9453) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Restarting kernel threads ... done. CPU: 0 PID: 9454 Comm: syz-executor.3 Not tainted 4.14.140 #36 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc_track_caller+0x2ec/0x790 mm/slab.c:3735 kvasprintf+0xa7/0x110 lib/kasprintf.c:25 kvasprintf_const+0x5a/0x170 lib/kasprintf.c:49 kobject_set_name_vargs+0x5b/0x150 lib/kobject.c:263 device_create_groups_vargs+0x1a8/0x250 drivers/base/core.c:2449 device_create_vargs+0x45/0x60 drivers/base/core.c:2493 Restarting kernel threads ... bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 super_setup_bdi_name+0x123/0x220 fs/super.c:1297 done. fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 Restarting kernel threads ... done. mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 Restarting kernel threads ... RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 done. kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '(null)' (ffff8880a49d6010): kobject_cleanup, parent (null) kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '(null)' (ffff8880a49d6010): calling ktype release kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env Restarting kernel threads ... done. kobject: '0:43' (ffff8880a13b9410): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env CPU: 0 PID: 9495 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc_track_caller+0x2ec/0x790 mm/slab.c:3735 kstrdup+0x3a/0x70 mm/util.c:56 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kstrdup_const+0x48/0x60 mm/util.c:77 __kernfs_new_node+0x2f/0x420 fs/kernfs/dir.c:629 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678 kernfs_create_dir_ns+0x41/0x140 fs/kernfs/dir.c:999 sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55 create_dir lib/kobject.c:71 [inline] kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject_add_internal lib/kobject.c:205 [inline] kobject_add_varg lib/kobject.c:364 [inline] kobject_add+0x11f/0x180 lib/kobject.c:409 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' device_add+0x383/0x1490 drivers/base/core.c:1809 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env device_create_groups_vargs+0x1e2/0x250 drivers/base/core.c:2453 device_create_vargs+0x45/0x60 drivers/base/core.c:2493 bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 super_setup_bdi_name+0x123/0x220 fs/super.c:1297 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 done. mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 Restarting kernel threads ... vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 done. SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject_add_internal failed for 0:43 (error: -12 parent: bdi) kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:43' (ffff8880a13b9410): kobject_cleanup, parent (null) kobject: '0:43' (ffff8880a13b9410): calling ktype release kobject: '0:43': free name FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env CPU: 0 PID: 9530 Comm: syz-executor.3 Not tainted 4.14.140 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env should_failslab+0xdb/0x130 mm/failslab.c:32 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x47/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] fill_pool lib/debugobjects.c:110 [inline] __debug_object_init+0x5b8/0x8e0 lib/debugobjects.c:341 debug_object_init+0x16/0x20 lib/debugobjects.c:393 debug_percpu_counter_activate lib/percpu_counter.c:44 [inline] __percpu_counter_init+0xc2/0x240 lib/percpu_counter.c:135 wb_init+0x57d/0x7c0 mm/backing-dev.c:329 cgwb_bdi_init+0xe7/0x1f0 mm/backing-dev.c:689 bdi_init mm/backing-dev.c:850 [inline] bdi_alloc_node+0x22b/0x2e0 mm/backing-dev.c:864 bdi_alloc include/linux/backing-dev.h:39 [inline] super_setup_bdi_name+0x8b/0x220 fs/super.c:1290 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: '0:43' (ffff888059f6aad0): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: '0:43' (ffff888059f6aad0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:43' (ffff888059f6aad0): fill_kobj_path: path = '/devices/virtual/bdi/0:43' kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:43' (ffff888059f6aad0): kobject_uevent_env kobject: '0:43' (ffff888059f6aad0): fill_kobj_path: path = '/devices/virtual/bdi/0:43' Restarting kernel threads ... done. kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: '0:43' (ffff888059f6aad0): kobject_cleanup, parent (null) kobject: '0:43' (ffff888059f6aad0): calling ktype release kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: '0:43': free name kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... done. kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:43' (ffff8880a13b8310): kobject_add_internal: parent: 'bdi', set: 'devices' Restarting kernel threads ... done. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env CPU: 1 PID: 9580 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x420 fs/kernfs/dir.c:633 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678 kernfs_create_dir_ns+0x41/0x140 fs/kernfs/dir.c:999 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55 create_dir lib/kobject.c:71 [inline] kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229 kobject_add_internal lib/kobject.c:205 [inline] kobject_add_varg lib/kobject.c:364 [inline] kobject_add+0x11f/0x180 lib/kobject.c:409 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' device_add+0x383/0x1490 drivers/base/core.c:1809 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' device_create_groups_vargs+0x1e2/0x250 drivers/base/core.c:2453 device_create_vargs+0x45/0x60 drivers/base/core.c:2493 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' super_setup_bdi_name+0x123/0x220 fs/super.c:1297 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject_add_internal failed for 0:43 (error: -12 parent: bdi) kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: '0:43' (ffff8880a13b8310): kobject_cleanup, parent (null) kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:43' (ffff8880a13b8310): calling ktype release kobject: '0:43': free name kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' Restarting kernel threads ... done. kobject: '0:43' (ffff888058dd6610): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env Restarting kernel threads ... done. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 9609 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' 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+0x138/0x197 lib/dump_stack.c:53 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x47/0x780 mm/slab.c:3550 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' radix_tree_node_alloc.constprop.0+0x1c7/0x310 lib/radix-tree.c:397 idr_get_free_cmn+0x563/0x8d0 lib/radix-tree.c:2170 idr_get_free include/linux/radix-tree.h:369 [inline] idr_alloc_cmn+0x10e/0x210 lib/idr.c:24 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' idr_alloc include/linux/idr.h:116 [inline] idr_alloc_cyclic+0xd0/0x1e2 lib/idr.c:56 __kernfs_new_node+0xe4/0x420 fs/kernfs/dir.c:640 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678 kernfs_create_dir_ns+0x41/0x140 fs/kernfs/dir.c:999 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55 create_dir lib/kobject.c:71 [inline] kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229 kobject_add_internal lib/kobject.c:205 [inline] kobject_add_varg lib/kobject.c:364 [inline] kobject_add+0x11f/0x180 lib/kobject.c:409 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env device_add+0x383/0x1490 drivers/base/core.c:1809 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env device_create_groups_vargs+0x1e2/0x250 drivers/base/core.c:2453 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' device_create_vargs+0x45/0x60 drivers/base/core.c:2493 bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 super_setup_bdi_name+0x123/0x220 fs/super.c:1297 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: '0:43' (ffff888058dd6610): kobject_uevent_env kobject: '0:43' (ffff888058dd6610): fill_kobj_path: path = '/devices/virtual/bdi/0:43' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... kobject: '0:43' (ffff888058dd6610): kobject_uevent_env done. kobject: '0:43' (ffff888058dd6610): fill_kobj_path: path = '/devices/virtual/bdi/0:43' Restarting kernel threads ... done. kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env kobject: '0:43' (ffff888058dd6610): kobject_cleanup, parent (null) kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' Restarting kernel threads ... done. kobject: '0:43' (ffff888058dd6610): calling ktype release kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env Restarting kernel threads ... kobject: '0:43': free name done. kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:43' (ffff888058ef60d0): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' CPU: 1 PID: 9667 Comm: syz-executor.3 Not tainted 4.14.140 #36 kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x420 fs/kernfs/dir.c:633 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678 __kernfs_create_file+0x46/0x323 fs/kernfs/file.c:989 kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env sysfs_add_file_mode_ns+0x1e4/0x450 fs/sysfs/file.c:307 sysfs_create_file_ns+0x8e/0xb0 fs/sysfs/file.c:334 kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' sysfs_create_file include/linux/sysfs.h:515 [inline] device_create_file+0xd7/0x110 drivers/base/core.c:1311 device_add+0x3be/0x1490 drivers/base/core.c:1819 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' device_create_groups_vargs+0x1e2/0x250 drivers/base/core.c:2453 device_create_vargs+0x45/0x60 drivers/base/core.c:2493 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' super_setup_bdi_name+0x123/0x220 fs/super.c:1297 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: '0:43' (ffff888058ef60d0): kobject_uevent_env kobject: '0:43' (ffff888058ef60d0): fill_kobj_path: path = '/devices/virtual/bdi/0:43' kobject: '0:43' (ffff888058ef60d0): kobject_cleanup, parent (null) kobject: '0:43' (ffff888058ef60d0): calling ktype release kobject: '0:43': free name kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env Restarting kernel threads ... done. kobject: '0:43' (ffff8880589ad510): kobject_add_internal: parent: 'bdi', set: 'devices' Restarting kernel threads ... kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' done. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env Restarting kernel threads ... done. CPU: 1 PID: 9694 Comm: syz-executor.3 Not tainted 4.14.140 #36 Restarting kernel threads ... 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 done. kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x420 fs/kernfs/dir.c:633 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678 kernfs_create_link+0x2c/0x170 fs/kernfs/symlink.c:32 sysfs_do_create_link_sd.isra.0+0x90/0x120 fs/sysfs/symlink.c:44 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline] sysfs_create_link+0x65/0xc0 fs/sysfs/symlink.c:92 kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env device_add_class_symlinks drivers/base/core.c:1601 [inline] device_add+0x447/0x1490 drivers/base/core.c:1823 device_create_groups_vargs+0x1e2/0x250 drivers/base/core.c:2453 kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' device_create_vargs+0x45/0x60 drivers/base/core.c:2493 kobject: 'loop1' (ffff8880a4a18aa0): kobject_uevent_env bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 super_setup_bdi_name+0x123/0x220 fs/super.c:1297 kobject: 'loop1' (ffff8880a4a18aa0): fill_kobj_path: path = '/devices/virtual/block/loop1' fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 kobject: 'loop0' (ffff88805875c960): kobject_uevent_env kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007feb99851c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb99851c90 RCX: 0000000000459879 RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020004000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb998526d4 R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 0000000000000007 kobject: '0:43' (ffff8880589ad510): kobject_uevent_env kobject: 'loop5' (ffff8880a4b3c3e0): kobject_uevent_env kobject: '0:43' (ffff8880589ad510): fill_kobj_path: path = '/devices/virtual/bdi/0:43' kobject: 'loop5' (ffff8880a4b3c3e0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:43' (ffff8880589ad510): kobject_cleanup, parent (null) kobject: 'loop4' (ffff8880a4ae54a0): kobject_uevent_env kobject: '0:43' (ffff8880589ad510): calling ktype release kobject: '0:43': free name audit: type=1400 audit(1566804394.939:58): avc: denied { associate } for pid=9717 comm="syz-executor.0" name="snapshot" dev="devtmpfs" ino=58 scontext=system_u:object_r:audisp_var_run_t:s0 tcontext=system_u:object_r:device_t:s0 tclass=filesystem permissive=1 kobject: '0:43' (ffff888058b482d0): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop4' (ffff8880a4ae54a0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (ffff8880a4aa8ba0): kobject_uevent_env caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop3' (ffff8880a4aa8ba0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (ffff88805875c960): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff88805875c960): fill_kobj_path: path = '/devices/virtual/block/loop0' Restarting kernel threads ... CPU: 0 PID: 9727 Comm: syz-executor.3 Not tainted 4.14.140 #36 done. 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+0x138/0x197 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 caif:caif_disconnect_client(): nothing to disconnect slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc_track_caller+0x2ec/0x790 mm/slab.c:3735 kstrdup+0x3a/0x70 mm/util.c:56 kstrdup_const+0x48/0x60 mm/util.c:77 __kernfs_new_node+0x2f/0x420 fs/kernfs/dir.c:629 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678 kernfs_create_link+0x2c/0x170 fs/kernfs/symlink.c:32 sysfs_do_create_link_sd.isra.0+0x90/0x120 fs/sysfs/symlink.c:44 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline] sysfs_create_link+0x65/0xc0 fs/sysfs/symlink.c:92 device_add_class_symlinks drivers/base/core.c:1621 [inline] device_add+0x735/0x1490 drivers/base/core.c:1823 device_create_groups_vargs+0x1e2/0x250 drivers/base/core.c:2453 device_create_vargs+0x45/0x60 drivers/base/core.c:2493 bdi_register_va.part.0+0x38/0x660 mm/backing-dev.c:879 bdi_register_va+0x6c/0x80 mm/backing-dev.c:895 super_setup_bdi_name+0x123/0x220 fs/super.c:1297 fuse_bdi_init fs/fuse/inode.c:990 [inline] fuse_fill_super+0x910/0x15b0 fs/fuse/inode.c:1110 mount_nodev+0x52/0xf0 fs/super.c:1180 fuse_mount+0x2d/0x40 fs/fuse/inode.c:1193 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046