netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
================================================================================
UBSAN: Undefined behaviour in net/sched/sch_api.c:375:22
shift exponent 129 is too large for 32-bit type 'int'
CPU: 1 PID: 13652 Comm: syz-executor.4 Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x22c/0x33e lib/dump_stack.c:118
 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
gfs2: fsid=syz:syz: Now mounting FS...
 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
 __detect_linklayer net/sched/sch_api.c:375 [inline]
 qdisc_get_rtab.cold+0x1d/0x8e net/sched/sch_api.c:421
gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents
 tbf_change+0x978/0x1230 net/sched/sch_tbf.c:320
gfs2: fsid=syz:syz.0: jid=0, already locked for use
gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
 tbf_init+0x91/0xc4 net/sched/sch_tbf.c:433
 qdisc_create+0x534/0x1080 net/sched/sch_api.c:1155
gfs2: fsid=syz:syz.0: jid=0: Done
 tc_modify_qdisc+0x4c0/0x195b net/sched/sch_api.c:1571
gfs2: fsid=syz:syz.0: first mount done, others may mount
 rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778
gfs2: fsid=syz:syz.0: fatal: invalid metadata block
  bh = 2341 (magic number)
  function = gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 419
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
gfs2: fsid=syz:syz.0: about to withdraw this file system
 netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909
gfs2: fsid=syz:syz.0: withdrawn
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc7/0x130 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8f0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45de59
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd77e8b5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000118c008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4
R13: 00007ffe145ee0df R14: 00007fd77e8b69c0 R15: 000000000118bfd4
================================================================================
CPU: 0 PID: 13637 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 gfs2_lm_withdraw.cold+0x204/0x258 fs/gfs2/util.c:75
 gfs2_meta_check_ii+0x60/0x90 fs/gfs2/util.c:204
 gfs2_metatype_check_i fs/gfs2/util.h:111 [inline]
 gfs2_meta_indirect_buffer+0x344/0x400 fs/gfs2/meta_io.c:419
================================================================================
UBSAN: Undefined behaviour in net/sched/sch_api.c:376:24
shift exponent 129 is too large for 32-bit type 'int'
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:73 [inline]
 gfs2_inode_refresh+0x95/0xe10 fs/gfs2/glops.c:412
 inode_go_lock+0x234/0x493 fs/gfs2/glops.c:442
 do_promote+0x46f/0xdd0 fs/gfs2/glock.c:362
 finish_xmote+0x478/0xdd0 fs/gfs2/glock.c:522
 do_xmote+0x538/0x680 fs/gfs2/glock.c:590
 run_queue+0x24f/0x5a0 fs/gfs2/glock.c:655
 gfs2_glock_nq+0x7a2/0x14d0 fs/gfs2/glock.c:1113
 gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline]
 gfs2_rindex_update+0x2a6/0x430 fs/gfs2/rgrp.c:1046
 init_inodes+0x10cb/0x1ee0 fs/gfs2/ops_fstype.c:815
 fill_super+0x190e/0x2680 fs/gfs2/ops_fstype.c:1149
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
CPU: 1 PID: 13652 Comm: syz-executor.4 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
 __detect_linklayer net/sched/sch_api.c:376 [inline]
 qdisc_get_rtab.cold+0x7f/0x8e net/sched/sch_api.c:421
 tbf_change+0x978/0x1230 net/sched/sch_tbf.c:320
 tbf_init+0x91/0xc4 net/sched/sch_tbf.c:433
 qdisc_create+0x534/0x1080 net/sched/sch_api.c:1155
 tc_modify_qdisc+0x4c0/0x195b net/sched/sch_api.c:1571
 rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc7/0x130 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8f0 net/socket.c:2115
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45de59
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd77e8b5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000118c008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4
R13: 00007ffe145ee0df R14: 00007fd77e8b69c0 R15: 000000000118bfd4
================================================================================
gfs2: fsid=syz:syz: Now mounting FS...
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...
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
x_tables: duplicate underflow at hook 3
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: can't start logd thread: -4
gfs2: fsid=syz:syz.0: can't make FS RW: -4
netlink: 60 bytes leftover after parsing attributes in process `syz-executor.3'.
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS...
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents
CPU: 0 PID: 13704 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
gfs2: fsid=syz:syz.0: jid=0, already locked for use
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+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
gfs2: fsid=syz:syz.0: jid=0: Done
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
gfs2: fsid=syz:syz.0: first mount done, others may mount
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz: error -17 adding sysfs files
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=13775 comm=syz-executor.2
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=13779 comm=syz-executor.2
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
gfs2: fsid=syz:syz: Now mounting FS...
CPU: 0 PID: 13765 Comm: syz-executor.1 Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
gfs2: fsid=syz:syz.0: jid=0, already locked for use
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: fatal: invalid metadata block
  bh = 2341 (magic number)
  function = gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 419
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
gfs2: fsid=syz:syz.0: about to withdraw this file system
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f0054a7ea88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0054a7eb20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0054a7eae0
gfs2: fsid=syz:syz.0: withdrawn
RBP: 00007f0054a7eae0 R08: 00007f0054a7eb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
CPU: 1 PID: 13767 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 gfs2_lm_withdraw.cold+0x204/0x258 fs/gfs2/util.c:75
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
 gfs2_meta_check_ii+0x60/0x90 fs/gfs2/util.c:204
 gfs2_metatype_check_i fs/gfs2/util.h:111 [inline]
 gfs2_meta_indirect_buffer+0x344/0x400 fs/gfs2/meta_io.c:419
gfs2: fsid=syz:syz: error -17 adding sysfs files
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:73 [inline]
 gfs2_inode_refresh+0x95/0xe10 fs/gfs2/glops.c:412
 inode_go_lock+0x234/0x493 fs/gfs2/glops.c:442
 do_promote+0x46f/0xdd0 fs/gfs2/glock.c:362
 finish_xmote+0x478/0xdd0 fs/gfs2/glock.c:522
 do_xmote+0x538/0x680 fs/gfs2/glock.c:590
 run_queue+0x24f/0x5a0 fs/gfs2/glock.c:655
 gfs2_glock_nq+0x7a2/0x14d0 fs/gfs2/glock.c:1113
 gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline]
 gfs2_rindex_update+0x2a6/0x430 fs/gfs2/rgrp.c:1046
 init_inodes+0x10cb/0x1ee0 fs/gfs2/ops_fstype.c:815
 fill_super+0x190e/0x2680 fs/gfs2/ops_fstype.c:1149
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS...
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...
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
CPU: 0 PID: 13830 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz: error -17 adding sysfs files
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS...
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'
CPU: 0 PID: 13882 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
gfs2: fsid=syz:syz.0: jid=0: Done
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+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
gfs2: fsid=syz:syz.0: first mount done, others may mount
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz: error -17 adding sysfs files
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
gfs2: fsid=syz:syz: Now mounting FS...
CPU: 0 PID: 13923 Comm: syz-executor.1 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f0054a7ea88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0054a7eb20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0054a7eae0
RBP: 00007f0054a7eae0 R08: 00007f0054a7eb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz: error -17 adding sysfs files
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...
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: fatal: invalid metadata block
  bh = 2341 (magic number)
  function = gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 419
gfs2: fsid=syz:syz.0: about to withdraw this file system
gfs2: fsid=syz:syz.0: withdrawn
CPU: 1 PID: 13935 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 gfs2_lm_withdraw.cold+0x204/0x258 fs/gfs2/util.c:75
 gfs2_meta_check_ii+0x60/0x90 fs/gfs2/util.c:204
 gfs2_metatype_check_i fs/gfs2/util.h:111 [inline]
 gfs2_meta_indirect_buffer+0x344/0x400 fs/gfs2/meta_io.c:419
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:73 [inline]
 gfs2_inode_refresh+0x95/0xe10 fs/gfs2/glops.c:412
 inode_go_lock+0x234/0x493 fs/gfs2/glops.c:442
 do_promote+0x46f/0xdd0 fs/gfs2/glock.c:362
 finish_xmote+0x478/0xdd0 fs/gfs2/glock.c:522
 do_xmote+0x538/0x680 fs/gfs2/glock.c:590
 run_queue+0x24f/0x5a0 fs/gfs2/glock.c:655
 gfs2_glock_nq+0x7a2/0x14d0 fs/gfs2/glock.c:1113
 gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline]
 gfs2_rindex_update+0x2a6/0x430 fs/gfs2/rgrp.c:1046
 init_inodes+0x10cb/0x1ee0 fs/gfs2/ops_fstype.c:815
 fill_super+0x190e/0x2680 fs/gfs2/ops_fstype.c:1149
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS...
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...
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
CPU: 1 PID: 13994 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz: error -17 adding sysfs files
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
CPU: 0 PID: 14057 Comm: syz-executor.1 Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
gfs2: fsid=syz:syz: Now mounting FS...
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents
gfs2: fsid=syz:syz.0: jid=0, already locked for use
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f0054a7ea88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0054a7eb20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0054a7eae0
RBP: 00007f0054a7eae0 R08: 00007f0054a7eb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
gfs2: fsid=syz:syz: error -17 adding sysfs files
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: fatal: invalid metadata block
  bh = 2341 (magic number)
  function = gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 419
gfs2: fsid=syz:syz.0: about to withdraw this file system
gfs2: fsid=syz:syz.0: withdrawn
CPU: 1 PID: 14055 Comm: syz-executor.0 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 gfs2_lm_withdraw.cold+0x204/0x258 fs/gfs2/util.c:75
 gfs2_meta_check_ii+0x60/0x90 fs/gfs2/util.c:204
 gfs2_metatype_check_i fs/gfs2/util.h:111 [inline]
 gfs2_meta_indirect_buffer+0x344/0x400 fs/gfs2/meta_io.c:419
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:73 [inline]
 gfs2_inode_refresh+0x95/0xe10 fs/gfs2/glops.c:412
 inode_go_lock+0x234/0x493 fs/gfs2/glops.c:442
 do_promote+0x46f/0xdd0 fs/gfs2/glock.c:362
 finish_xmote+0x478/0xdd0 fs/gfs2/glock.c:522
 do_xmote+0x538/0x680 fs/gfs2/glock.c:590
 run_queue+0x24f/0x5a0 fs/gfs2/glock.c:655
 gfs2_glock_nq+0x7a2/0x14d0 fs/gfs2/glock.c:1113
 gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline]
 gfs2_rindex_update+0x2a6/0x430 fs/gfs2/rgrp.c:1046
 init_inodes+0x10cb/0x1ee0 fs/gfs2/ops_fstype.c:815
 fill_super+0x190e/0x2680 fs/gfs2/ops_fstype.c:1149
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f5957d6aa88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5957d6ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5957d6aae0
RBP: 00007f5957d6aae0 R08: 00007f5957d6ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
CPU: 0 PID: 14102 Comm: syz-executor.1 Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x234/0x290 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal+0x296/0x9a0 lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:453
 gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659
 fill_super+0x125b/0x2680 fs/gfs2/ops_fstype.c:1099
 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f0054a7ea88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0054a7eb20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0054a7eae0
RBP: 00007f0054a7eae0 R08: 00007f0054a7eb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 000000002000ddc0
kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
gfs2: fsid=syz:syz: error -17 adding sysfs files