__dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 sysfs_warn_dup.cold.3+0x1c/0x2b fs/sysfs/dir.c:30 kobject_add_internal failed for em1 with -EEXIST, don't try to register things with the same name in the same directory. sysfs_create_dir_ns+0x184/0x1d0 fs/sysfs/dir.c:58 create_dir lib/kobject.c:69 [inline] kobject_add_internal+0x353/0xba0 lib/kobject.c:228 WARNING: CPU: 0 PID: 4479 at lib/kobject.c:238 kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 Kernel panic - not syncing: panic_on_warn set ... kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xed/0x130 lib/kobject.c:435 gfs2_sys_fs_add+0x1ff/0x500 fs/gfs2/sys.c:652 fill_super+0x8c9/0x1a40 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x5e6/0x712 fs/gfs2/ops_fstype.c:1321 mount_fs+0xae/0x328 fs/super.c:1268 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 ksys_mount+0x12d/0x140 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x35/0x50 fs/namespace.c:3074 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4430ba RSP: 002b:00007ffc724fb1b8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba RDX: 0000000020000180 RSI: 00000000200001c0 RDI: 00007ffc724fb1d0 RBP: 00000000006cb018 R08: 0000000020000340 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f R13: 746f72706b636f6c R14: 0030656c69662f2e R15: 0000000000000004 CPU: 0 PID: 4479 Comm: syzkaller283063 Not tainted 4.16.0+ #1 ------------[ cut here ]------------ Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 kobject_add_internal failed for em1 with -EEXIST, don't try to register things with the same name in the same directory. panic+0x22f/0x4de kernel/panic.c:184 WARNING: CPU: 1 PID: 4475 at lib/kobject.c:238 kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 Modules linked in: CPU: 1 PID: 4475 Comm: syzkaller283063 Not tainted 4.16.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 RSP: 0018:ffff8801acd87480 EFLAGS: 00010286 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 RAX: 0000000000000078 RBX: ffff8801ace6d150 RCX: ffffffff815f58cd RDX: 0000000000000000 RSI: ffffffff815fa581 RDI: ffff8801acd86fe0 RBP: ffff8801acd87578 R08: ffff8801d9924400 R09: 0000000000000006 R10: ffff8801d9924400 R11: 0000000000000000 R12: 00000000ffffffef report_bug+0x252/0x2d0 lib/bug.c:186 R13: ffff8801d3aa5d48 R14: 1ffff100359b0e9a R15: ffff8801d3aa5d00 FS: 0000000000a4d880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd1bca1348 CR3: 00000001ada9c000 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+0x8e0/0xba0 lib/kobject.c:236 RSP: 0018:ffff8801b1ea7480 EFLAGS: 00010286 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xed/0x130 lib/kobject.c:435 RAX: 0000000000000078 RBX: ffff8801acd0d190 RCX: ffffffff815f58cd RDX: 0000000000000000 RSI: ffffffff815fa581 RDI: ffff8801b1ea6fe0 RBP: ffff8801b1ea7578 R08: ffff8801d9bde500 R09: 0000000000000006 R10: ffff8801d9bde500 R11: 0000000000000000 R12: 00000000ffffffef gfs2_sys_fs_add+0x1ff/0x500 fs/gfs2/sys.c:652 R13: ffff8801d3aa5d48 R14: 1ffff100363d4e9a R15: ffff8801d3aa5d00 fill_super+0x8c9/0x1a40 fs/gfs2/ops_fstype.c:1118 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xed/0x130 lib/kobject.c:435 gfs2_sys_fs_add+0x1ff/0x500 fs/gfs2/sys.c:652 gfs2_mount+0x5e6/0x712 fs/gfs2/ops_fstype.c:1321 fill_super+0x8c9/0x1a40 fs/gfs2/ops_fstype.c:1118 mount_fs+0xae/0x328 fs/super.c:1268 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 gfs2_mount+0x5e6/0x712 fs/gfs2/ops_fstype.c:1321 mount_fs+0xae/0x328 fs/super.c:1268 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 ksys_mount+0x12d/0x140 fs/namespace.c:3063 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x35/0x50 fs/namespace.c:3074 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 ksys_mount+0x12d/0x140 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x35/0x50 fs/namespace.c:3074 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4430ba RSP: 002b:00007ffc724fb1b8 EFLAGS: 00000297 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba RDX: 0000000020000180 RSI: 00000000200001c0 RDI: 00007ffc724fb1d0 RBP: 00000000006cb018 R08: 0000000020000340 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f R13: 746f72706b636f6c R14: 0030656c69662f2e R15: 0000000000000004 Code: 00 00 00 00 fc entry_SYSCALL_64_after_hwframe+0x42/0xb7 ff df RIP: 0033:0x4430ba 48 c1 RSP: 002b:00007ffc724fb1b8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 ea RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba 03 RDX: 0000000020000180 RSI: 00000000200001c0 RDI: 00007ffc724fb1d0 RBP: 00000000006cb018 R08: 0000000020000340 R09: 000000000000000a 80 R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f R13: 746f72706b636f6c R14: 0030656c69662f2e R15: 0000000000000004 3c 02 00 0f 85 88 02 00 00 48 8b 13 48 c7 c6 00 5c 42 88 48 c7 c7 60 59 42 88 e8 d0 b0 fc f9 <0f> 0b e9 47 fb ff ff 4c 89 e7 e8 01 4b 6a fa e9 e2 f7 ff ff 4c irq event stamp: 3633124 hardirqs last enabled at (3633123): [] restore_regs_and_return_to_kernel+0x0/0x2b hardirqs last disabled at (3633124): [] error_entry+0x72/0xd0 arch/x86/entry/entry_64.S:1261 softirqs last enabled at (1973142): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (1973083): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (1973083): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 ---[ end trace a756644ea731b831 ]--- Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..