gfs2: fsid=syz:syz.0: can't create logd thread: -4 gfs2: fsid=syz:syz.0: G: s:UN n:2/922 f:an t:UN d:EX/0 a:0 v:0 r:-128 m:20 p:1 ------------[ cut here ]------------ kernel BUG at fs/gfs2/glock.c:246! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 12050 Comm: syz.4.1825 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__gfs2_glock_put+0x31b/0x370 fs/gfs2/glock.c:246 Code: 3f 48 89 de e8 26 12 ff ff eb 26 e8 cf e2 c0 fd e9 5a fe ff ff e8 c5 e2 c0 fd 31 ff 48 89 de ba 01 00 00 00 e8 96 e1 ff ff 90 <0f> 0b e8 ae e2 c0 fd 31 f6 65 ff 0d 75 da 9e 0e 40 0f 94 c5 40 0f RSP: 0018:ffffc9000c9f74c8 EFLAGS: 00010246 RAX: 3624cc46aec6b200 RBX: ffff8880585e8fd8 RCX: 0000000000080000 RDX: ffffc9000d523000 RSI: 0000000000021993 RDI: 0000000000021994 RBP: ffffc9000c9f7630 R08: ffffc9000c9f6d87 R09: 1ffff9200193edb0 R10: dffffc0000000000 R11: fffff5200193edb1 R12: dffffc0000000000 R13: 0000000000000003 R14: ffff88807b6f4000 R15: ffff8880585e92c8 FS: 00007f20076176c0(0000) GS:ffff888125c25000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd24b9156c0 CR3: 0000000050cb4000 CR4: 00000000003526f0 Call Trace: gfs2_glock_put_eventually fs/gfs2/super.c:1170 [inline] gfs2_evict_inode+0xae7/0x1000 fs/gfs2/super.c:1445 evict+0x5f4/0xae0 fs/inode.c:837 uninit_statfs fs/gfs2/ops_fstype.c:691 [inline] init_journal+0x7d1/0x2170 fs/gfs2/ops_fstype.c:818 init_inodes+0xcf/0x320 fs/gfs2/ops_fstype.c:884 gfs2_fill_super+0x1b1d/0x21b0 fs/gfs2/ops_fstype.c:1290 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1691 gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x92/0x2a0 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount+0x302/0xa10 fs/namespace.c:3712 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4201 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2006790eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2007616e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f2007616ef0 RCX: 00007f2006790eea RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f2007616eb0 RBP: 00002000000124c0 R08: 00007f2007616ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500 R13: 00007f2007616eb0 R14: 0000000000012642 R15: 0000200000000140 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__gfs2_glock_put+0x31b/0x370 fs/gfs2/glock.c:246 Code: 3f 48 89 de e8 26 12 ff ff eb 26 e8 cf e2 c0 fd e9 5a fe ff ff e8 c5 e2 c0 fd 31 ff 48 89 de ba 01 00 00 00 e8 96 e1 ff ff 90 <0f> 0b e8 ae e2 c0 fd 31 f6 65 ff 0d 75 da 9e 0e 40 0f 94 c5 40 0f RSP: 0018:ffffc9000c9f74c8 EFLAGS: 00010246 RAX: 3624cc46aec6b200 RBX: ffff8880585e8fd8 RCX: 0000000000080000 RDX: ffffc9000d523000 RSI: 0000000000021993 RDI: 0000000000021994 RBP: ffffc9000c9f7630 R08: ffffc9000c9f6d87 R09: 1ffff9200193edb0 R10: dffffc0000000000 R11: fffff5200193edb1 R12: dffffc0000000000 R13: 0000000000000003 R14: ffff88807b6f4000 R15: ffff8880585e92c8 FS: 00007f20076176c0(0000) GS:ffff888125c25000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c37a1cc CR3: 0000000050cb4000 CR4: 00000000003526f0