gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents gfs2: fsid=syz:syz.0: jid=0, already locked for use gfs2: fsid=syz:syz.0: jid=0: Looking at journal... sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9505 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 9505 Comm: syz-executor.3 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x21d/0x451 kernel/panic.c:247 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 __warn+0xdf/0x1e0 kernel/panic.c:603 sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' report_bug+0x208/0x250 lib/bug.c:183 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 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9512 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Modules linked in: invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 CPU: 1 PID: 9512 Comm: syz-executor.4 Not tainted 4.14.305-syzkaller #0 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RSP: 0018:ffff88805645f728 EFLAGS: 00010282 task: ffff88805660c040 task.stack: ffff888056610000 RAX: 000000000000003a RBX: ffff888053f1c290 RCX: 0000000000000000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RDX: 000000000001336f RSI: ffffffff81444380 RDI: ffffed100ac8bedb RSP: 0018:ffff888056617728 EFLAGS: 00010282 RBP: ffff888053f1a240 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f62c40 RAX: 000000000000003a RBX: ffff888053f8c2d0 RCX: 0000000000000000 R13: ffff8880b537c280 R14: ffff888053f1c298 R15: ffff8880a92a4258 RDX: 000000000001f940 RSI: ffffffff81444380 RDI: ffffed100acc2edb RBP: ffff888053f98580 R08: 000000000000003a R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f62c40 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 R13: ffff8880a533bb40 R14: ffff888053f8c2d8 R15: ffff888053f1c298 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 FS: 00007fece2d24700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fece2d25000 CR3: 00000000aa13f000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 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 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 mount_fs+0x92/0x2a0 fs/super.c:1237 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 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 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f56c0a7962a RSP: 002b:00007f56befe9f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f67b RCX: 00007f56c0a7962a RDX: 000000002001f680 RSI: 000000002001f6c0 RDI: 00007f56befe9fe0 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RBP: 00007f56befea020 R08: 00007f56befea020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001f680 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R13: 000000002001f6c0 R14: 00007f56befe9fe0 R15: 000000002001f700 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fece47b362a RSP: 002b:00007fece2d23f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f675 RCX: 00007fece47b362a RDX: 000000002001f680 RSI: 000000002001f6c0 RDI: 00007fece2d23fe0 RBP: 00007fece2d24020 R08: 00007fece2d24020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001f680 R13: 000000002001f6c0 R14: 00007fece2d23fe0 R15: 000000002001f700 Code: bd ea ff ff ff e9 4f 9c 9f fa 4c 89 ff e8 b4 b6 7a fa eb da e8 fd f3 50 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c8 95 87 e8 fd fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 8c 8c 7a fa e8 d7 f3 50 fa 4d ---[ end trace 07be469153047ff5 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..