------------[ cut here ]------------ kernel BUG at fs/gfs2/quota.c:331! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5353 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-11105-ga6923c06a3b2 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:qd_put+0x18a/0x190 fs/gfs2/quota.c:331 Code: e7 e8 ca ef 28 fe e9 ee fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 7c 83 48 89 ef e8 a1 f0 28 fe e9 76 ff ff ff e8 27 1e c4 fd 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d517b60 EFLAGS: 00010293 RAX: ffffffff83fb9079 RBX: ffff888043782000 RCX: ffff888000eca440 RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000 RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52001aa2f54 R12: ffff888043782070 R13: ffff888011a5b800 R14: ffff888043782030 R15: 1ffff110086f040e FS: 00007fa66e4996c0(0000) GS:ffff88808d21f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa66e477fc8 CR3: 0000000042f52000 CR4: 0000000000352ef0 Call Trace: gfs2_quota_sync+0x3c4/0x460 fs/gfs2/quota.c:1361 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:658 sync_filesystem+0xee/0x230 fs/sync.c:56 gfs2_reconfigure+0xbb/0xb20 fs/gfs2/ops_fstype.c:1555 reconfigure_super+0x224/0x890 fs/super.c:1077 vfs_cmd_reconfigure fs/fsopen.c:262 [inline] vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:291 __do_sys_fsconfig fs/fsopen.c:467 [inline] __se_sys_fsconfig+0x78e/0x8d0 fs/fsopen.c:344 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa66d58eb69 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa66e499038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007fa66d7b6080 RCX: 00007fa66d58eb69 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000005 RBP: 00007fa66d611df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa66d7b6080 R15: 00007fff4bd014e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:qd_put+0x18a/0x190 fs/gfs2/quota.c:331 Code: e7 e8 ca ef 28 fe e9 ee fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 7c 83 48 89 ef e8 a1 f0 28 fe e9 76 ff ff ff e8 27 1e c4 fd 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d517b60 EFLAGS: 00010293 RAX: ffffffff83fb9079 RBX: ffff888043782000 RCX: ffff888000eca440 RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000 RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52001aa2f54 R12: ffff888043782070 R13: ffff888011a5b800 R14: ffff888043782030 R15: 1ffff110086f040e FS: 00007fa66e4996c0(0000) GS:ffff88808d21f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa66e477fc8 CR3: 0000000042f52000 CR4: 0000000000352ef0