R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020047a20 gfs2: fsid=syz:syz.0: jid=0: Done gfs2: fsid=syz:syz.0: first mount done, others may mount kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4971 Comm: syz-executor.4 Not tainted 4.19.154-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. RIP: 0010:set_rgrp_preferences fs/gfs2/rgrp.c:984 [inline] RIP: 0010:gfs2_ri_update+0x289/0x520 fs/gfs2/rgrp.c:1012 Code: e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 5c 7a 51 fe 49 8d 7f 74 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 68 RSP: 0018:ffff88804a787630 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000e465000 RDX: 000000000000000e RSI: ffffffff831354a4 RDI: 0000000000000074 RBP: ffff8880588e1b00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: ffff8880588e1afc R15: 0000000000000000 FS: 00007fd47995f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 gfs2: fsid=syz:syz: error -17 adding sysfs files CR2: 0000555c9d399530 CR3: 000000005178c000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: gfs2_rindex_update+0x3ba/0x430 fs/gfs2/rgrp.c:1052 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. init_inodes+0x1061/0x1cf0 fs/gfs2/ops_fstype.c:815 device bridge176 entered promiscuous mode bond109: Enslaving bridge176 as an active interface with an up link fill_super+0x18a6/0x2550 fs/gfs2/ops_fstype.c:1149 gfs2_mount+0x4c0/0x598 fs/gfs2/ops_fstype.c:1312 mount_fs+0xa3/0x30c 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+0x113c/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+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46090a 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:00007fd47995ea88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fd47995eb20 RCX: 000000000046090a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fd47995eae0 RBP: 00007fd47995eae0 R08: 00007fd47995eb20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020047a20 Modules linked in: ---[ end trace b82528fb75120c32 ]--- RIP: 0010:set_rgrp_preferences fs/gfs2/rgrp.c:984 [inline] RIP: 0010:gfs2_ri_update+0x289/0x520 fs/gfs2/rgrp.c:1012 Code: e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 5c 7a 51 fe 49 8d 7f 74 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 68 RSP: 0018:ffff88804a787630 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000e465000 RDX: 000000000000000e RSI: ffffffff831354a4 RDI: 0000000000000074 RBP: ffff8880588e1b00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: ffff8880588e1afc R15: 0000000000000000 FS: 00007fd47995f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555c9d399530 CR3: 000000005178c000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400