sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7979 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 ... ------------[ cut here ]------------ CPU: 1 PID: 7979 Comm: syz-executor221 Not tainted 4.14.302-syzkaller #0 WARNING: CPU: 0 PID: 7981 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Modules linked in: Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 CPU: 0 PID: 7981 Comm: syz-executor221 Not tainted 4.14.302-syzkaller #0 panic+0x1f9/0x42d kernel/panic.c:183 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 task: ffff8880b2ec0200 task.stack: ffff8880af288000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880af28f728 EFLAGS: 00010282 __warn.cold+0x20/0x44 kernel/panic.c:547 RAX: 000000000000003a RBX: ffff888099d55cd0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1015e51edb report_bug+0x208/0x250 lib/bug.c:183 RBP: ffff8880b1e5cd40 R08: 000000000000003a R09: 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 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823882aa80 R13: ffff8880b05f0080 R14: ffff888099d55cd8 R15: ffff88809663dc98 FS: 0000555555649300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8c95f30314 CR3: 000000009bf94000 CR4: 00000000003406f0 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RSP: 0018:ffff8880967ff728 EFLAGS: 00010282 Call Trace: sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RAX: 000000000000003a RBX: ffff88809663dc90 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012cffedb create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RBP: ffff88809a7662c0 R08: 000000000000003a R09: 0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823882aa80 R13: ffff8880b342fc80 R14: ffff88809663dc98 R15: ffff888095461c58 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 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 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 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f8c95ed96aa RSP: 002b:00007fffcd514588 EFLAGS: 00000282 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8c95ed96aa do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 RDX: 00000000200124c0 RSI: 0000000020000080 RDI: 00007fffcd514590 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RBP: 00007fffcd514590 R08: 00007fffcd5145d0 R09: 0000000000000002 RIP: 0033:0x7f8c95ed96aa R10: 0000000000010011 R11: 0000000000000282 R12: 0000000000000004 RSP: 002b:00007fffcd514588 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 R13: 00005555556492c0 R14: 00007fffcd5145d0 R15: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8c95ed96aa Code: RDX: 00000000200124c0 RSI: 0000000020000080 RDI: 00007fffcd514590 bd RBP: 00007fffcd514590 R08: 00007fffcd5145d0 R09: 0000000000000002 ea R10: 0000000000010011 R11: 0000000000000282 R12: 0000000000000004 ff R13: 00005555556492c0 R14: 00007fffcd5145d0 R15: 0000000000000000 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 0184589ffdd7a9b0 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..