sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' WARNING: CPU: 0 PID: 7992 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 ... CPU: 0 PID: 7992 Comm: syz-executor130 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 ------------[ cut here ]------------ panic+0x1f9/0x42d kernel/panic.c:183 WARNING: CPU: 1 PID: 7995 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Modules linked in: CPU: 1 PID: 7995 Comm: syz-executor130 Not tainted 4.14.302-syzkaller #0 __warn.cold+0x20/0x44 kernel/panic.c:547 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 task: ffff888095a66100 task.stack: ffff88809cf10000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 report_bug+0x208/0x250 lib/bug.c:183 RSP: 0018:ffff88809cf17728 EFLAGS: 00010282 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 RAX: 000000000000003a RBX: ffff8880957f5b90 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10139e2edb RBP: ffff8880956ecd80 R08: 000000000000003a R09: 0000000000000000 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b134d700 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 R13: ffff8880b2dea5c0 R14: ffff8880957f5b98 R15: ffff8880956d5b58 RSP: 0018:ffff8880a0f27728 EFLAGS: 00010282 FS: 0000555555faa300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RAX: 000000000000003a RBX: ffff8880956d5b50 RCX: 0000000000000000 CR2: 00007ffd0ab27c60 CR3: 00000000a8f41000 CR4: 00000000003406e0 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10141e4edb DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RBP: ffff8880b1a6c980 R08: 000000000000003a R09: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b134d700 Call Trace: R13: ffff8880b613ab40 R14: ffff8880956d5b58 R15: ffff88809dfadb18 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 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 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 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_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 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 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fed960f96da RIP: 0033:0x7fed960f96da RSP: 002b:00007ffe2aa950a8 EFLAGS: 00000282 RSP: 002b:00007ffe2aa950a8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fed960f96da RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fed960f96da RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffe2aa950b0 RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffe2aa950b0 RBP: 00007ffe2aa950b0 R08: 00007ffe2aa950f0 R09: 0000000000000002 RBP: 00007ffe2aa950b0 R08: 00007ffe2aa950f0 R09: 0000000000000002 R10: 0000000000000819 R11: 0000000000000282 R12: 0000000000000004 R10: 0000000000000819 R11: 0000000000000282 R12: 0000000000000004 R13: 0000555555faa2c0 R14: 00007ffe2aa950f0 R15: 0000000000000000 R13: 0000555555faa2c0 R14: 00007ffe2aa950f0 R15: 0000000000000000 Code: bd ea ff ff ff e9 8f c2 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 3518d34fdd6aad48 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..