gfs2: fsid=syz:syz.0: first mount done, others may mount gfs2: fsid=syz:syz.0: can't create logd thread: -4 gfs2: fsid=syz:syz.0: G: s:UN n:2/22 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:274! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 15352 Comm: syz.7.2061 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__gfs2_glock_put+0x384/0x3e0 fs/gfs2/glock.c:274 Code: 3f 48 89 de e8 7d 0f ff ff eb 26 e8 66 cb c8 fd e9 30 fe ff ff e8 5c cb c8 fd 31 ff 48 89 de ba 01 00 00 00 e8 2d df ff ff 90 <0f> 0b e8 45 cb c8 fd 31 f6 65 ff 0d 5c 0f cc 0e 40 0f 94 c5 40 0f RSP: 0018:ffffc900039af408 EFLAGS: 00010246 RAX: e058797db096df00 RBX: ffff888053aaef88 RCX: 0000000000080000 RDX: ffffc9001aa9c000 RSI: 000000000001bbfb RDI: 000000000001bbfc RBP: 0000000000000000 R08: ffffc900039aecc7 R09: 1ffff92000735d98 R10: dffffc0000000000 R11: fffff52000735d99 R12: dffffc0000000000 R13: 1ffff1100c5c5015 R14: ffff888062e28000 R15: ffff888053aaf278 FS: 00007f7b4d4b16c0(0000) GS:ffff888125af1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000001c0 CR3: 00000000545d6000 CR4: 00000000003526f0 Call Trace: gfs2_glock_put_eventually fs/gfs2/super.c:1183 [inline] gfs2_evict_inode+0xae7/0x1000 fs/gfs2/super.c:1458 evict+0x501/0x9c0 fs/inode.c:810 gfs2_jindex_free+0x39c/0x440 fs/gfs2/super.c:79 init_journal+0x8f1/0x2260 fs/gfs2/ops_fstype.c:833 init_inodes+0xcf/0x320 fs/gfs2/ops_fstype.c:891 gfs2_fill_super+0x1a2e/0x20d0 fs/gfs2/ops_fstype.c:1293 get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1691 gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1335 vfs_get_tree+0x8f/0x2b0 fs/super.c:1751 fc_mount fs/namespace.c:1274 [inline] do_new_mount_fc fs/namespace.c:3726 [inline] do_new_mount+0x302/0xa10 fs/namespace.c:3802 do_mount fs/namespace.c:4125 [inline] __do_sys_mount fs/namespace.c:4324 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4301 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7b4c59038a 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:00007f7b4d4b0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7b4d4b0ef0 RCX: 00007f7b4c59038a RDX: 000020000001f680 RSI: 0000200000000040 RDI: 00007f7b4d4b0eb0 RBP: 000020000001f680 R08: 00007f7b4d4b0ef0 R09: 0000000000000084 R10: 0000000000000084 R11: 0000000000000246 R12: 0000200000000040 R13: 00007f7b4d4b0eb0 R14: 000000000001f790 R15: 00002000000001c0 Modules linked in: ---[ end trace 0000000000000000 ]--- Code: 3f 48 89 de e8 7d 0f ff ff eb 26 e8 66 cb c8 fd e9 30 fe ff ff e8 5c cb c8 fd 31 ff 48 89 de ba 01 00 00 00 e8 2d df ff ff 90 <0f> 0b e8 45 cb c8 fd 31 f6 65 ff 0d 5c 0f cc 0e 40 0f 94 c5 40 0f RSP: 0018:ffffc900039af408 EFLAGS: 00010246 RAX: e058797db096df00 RBX: ffff888053aaef88 RCX: 0000000000080000 RDX: ffffc9001aa9c000 RSI: 000000000001bbfb RDI: 000000000001bbfc RBP: 0000000000000000 R08: ffffc900039aecc7 R09: 1ffff92000735d98 R10: dffffc0000000000 R11: fffff52000735d99 R12: dffffc0000000000 R13: 1ffff1100c5c5015 R14: ffff888062e28000 R15: ffff888053aaf278 FS: 00007f7b4d4b16c0(0000) GS:ffff888125af1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e97643fe8 CR3: 00000000545d6000 CR4: 00000000003526f0