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+0x1a7/0x27d lib/dump_stack.c:53 kobject_add_internal failed for _dev_dsp# with -EEXIST, don't try to register things with the same name in the same directory. sysfs_warn_dup+0x83/0xa0 fs/sysfs/dir.c:30 WARNING: CPU: 0 PID: 4433 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 sysfs_create_dir_ns+0x178/0x1d0 fs/sysfs/dir.c:58 Kernel panic - not syncing: panic_on_warn set ... create_dir lib/kobject.c:69 [inline] kobject_add_internal+0x335/0xbc0 lib/kobject.c:227 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2514 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0xea4/0x2b90 fs/namespace.c:2847 ksys_mount+0xab/0x120 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x39/0x50 fs/namespace.c:3074 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4431fa RSP: 002b:00007ffc39311eb8 EFLAGS: 00000213 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004431fa RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc39311ed0 RBP: 0000000020000270 R08: 00000000200003c0 R09: 000000000000000a R10: 0000000000000002 R11: 0000000000000213 R12: fffffffffffffffe R13: 0030656c69662f2e R14: 0000000000000004 R15: 00000000200003c0 CPU: 0 PID: 4433 Comm: syzkaller794056 Not tainted 4.16.0+ #13 ------------[ cut here ]------------ 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+0x1a7/0x27d lib/dump_stack.c:53 kobject_add_internal failed for _dev_dsp# with -EEXIST, don't try to register things with the same name in the same directory. panic+0x1f8/0x42c kernel/panic.c:183 WARNING: CPU: 1 PID: 4436 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 Modules linked in: CPU: 1 PID: 4436 Comm: syzkaller794056 Not tainted 4.16.0+ #13 __warn+0x1dc/0x200 kernel/panic.c:547 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 RSP: 0018:ffff8801ae18f470 EFLAGS: 00010282 report_bug+0x1f4/0x2b0 lib/bug.c:186 RAX: dffffc0000000008 RBX: ffff8801ae7bd190 RCX: ffffffff815b324e RDX: 0000000000000000 RSI: 1ffff10035c31e3e RDI: 1ffff10035c31e13 fixup_bug.part.10+0x37/0x80 arch/x86/kernel/traps.c:178 RBP: ffff8801ae18f568 R08: 1ffff10035c31dd5 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff10035c31e94 fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 R13: 00000000ffffffef R14: ffff8801d39c1f48 R15: 1ffff10035c31e98 FS: 0000000000b20880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000ecfcc0 CR3: 00000001aea5c000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:991 RIP: 0010:kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 RSP: 0018:ffff8801ae6af470 EFLAGS: 00010282 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 RAX: dffffc0000000008 RBX: ffff8801ae7ed150 RCX: ffffffff815b324e RDX: 0000000000000000 RSI: 1ffff10035cd5e3e RDI: 1ffff10035cd5e13 RBP: ffff8801ae6af568 R08: 1ffff10035cd5dd5 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff10035cd5e94 R13: 00000000ffffffef R14: ffff8801d39c1f48 R15: 1ffff10035cd5e98 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 vfs_kern_mount fs/namespace.c:2514 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0xea4/0x2b90 fs/namespace.c:2847 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2514 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0xea4/0x2b90 fs/namespace.c:2847 ksys_mount+0xab/0x120 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x39/0x50 fs/namespace.c:3074 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 ksys_mount+0xab/0x120 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x39/0x50 fs/namespace.c:3074 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4431fa RSP: 002b:00007ffc39311eb8 EFLAGS: 00000213 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004431fa RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc39311ed0 RBP: 0000000020000270 R08: 00000000200003c0 R09: 000000000000000a R10: 0000000000000002 R11: 0000000000000213 R12: fffffffffffffffe R13: 0030656c69662f2e R14: 0000000000000004 R15: 00000000200003c0 entry_SYSCALL_64_after_hwframe+0x42/0xb7 Code: RIP: 0033:0x4431fa RSP: 002b:00007ffc39311eb8 EFLAGS: 00000213 00 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004431fa 00 RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc39311ed0 RBP: 0000000020000270 R08: 00000000200003c0 R09: 000000000000000a 00 R10: 0000000000000002 R11: 0000000000000213 R12: fffffffffffffffe R13: 0030656c69662f2e R14: 0000000000000004 R15: 00000000200003c0 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 48 8b 13 48 c7 c6 e0 3d d6 87 48 c7 c7 40 3b d6 87 e8 3c dc 5d fa <0f> 0b e9 1d fb ff ff e8 60 ec 8d fa 0f 0b e9 29 fe ff ff e8 54 ---[ end trace 75173e99d4f58ca1 ]--- Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..