sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7984 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 WARNING: CPU: 0 PID: 7978 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Kernel panic - not syncing: panic_on_warn set ... Modules linked in: CPU: 1 PID: 7984 Comm: syz-executor228 Not tainted 4.14.302-syzkaller #0 CPU: 0 PID: 7978 Comm: syz-executor228 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 task: ffff8880b4f6a400 task.stack: ffff8880959d8000 Call Trace: RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 RSP: 0018:ffff8880959df728 EFLAGS: 00010282 panic+0x1f9/0x42d kernel/panic.c:183 RAX: 000000000000003a RBX: ffff8880b1995ad0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012b3bedb RBP: ffff8880956d6300 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f34d20 R13: ffff8880b2a5b680 R14: ffff8880b1995ad8 R15: ffff8880b1b15a98 __warn.cold+0x20/0x44 kernel/panic.c:547 FS: 0000555555d7c300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557527221f30 CR3: 00000000b4afd000 CR4: 00000000003406f0 report_bug+0x208/0x250 lib/bug.c:183 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880b4527728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880b1b15a90 RCX: 0000000000000000 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10168a4edb RBP: ffff888095706e40 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f34d20 R13: ffff8880a3089e80 R14: ffff8880b1b15a98 R15: ffff8880b2e01a58 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 mount_fs+0x92/0x2a0 fs/super.c:1237 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 RIP: 0033:0x7f49a70ae6da RSP: 002b:00007fff087c6fd8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f49a70ae6da RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007fff087c6ff0 RBP: 00007fff087c6ff0 R08: 00007fff087c7030 R09: 0000000000000002 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 R13: 0000555555d7c2c0 R14: 0000000000000000 R15: 00007fff087c7030 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 Code: entry_SYSCALL_64_after_hwframe+0x5e/0xd3 bd RIP: 0033:0x7f49a70ae6da ea RSP: 002b:00007fff087c6fd8 EFLAGS: 00000282 ff ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f49a70ae6da ff RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007fff087c6ff0 e9 RBP: 00007fff087c6ff0 R08: 00007fff087c7030 R09: 0000000000000002 8f R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 c2 R13: 0000555555d7c2c0 R14: 0000000000000000 R15: 00007fff087c7030 9f fa 4c 89 ff e8 74 de 7a fa eb da e8 6d 1d 51 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c4 95 87 e8 e5 fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 4c b4 7a fa e8 47 1d 51 fa 4d ---[ end trace 32e57caddc5d1e95 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..