gfs2: fsid=syz:syz.0: G: s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20 p:0 gfs2: fsid=syz:syz.0: H: s:EX f:cH e:0 p:10725 [syz-executor] gfs2_glock_nq_init fs/gfs2/glock.h:244 [inline] gfs2: fsid=syz:syz.0: H: s:EX f:cH e:0 p:10725 [syz-executor] do_sync+0x3ab/0xc60 fs/gfs2/quota.c:921 ------------[ cut here ]------------ kernel BUG at fs/gfs2/glock.c:1503! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10725 Comm: syz-executor Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline] RIP: 0010:gfs2_glock_nq+0x10c7/0x15e0 fs/gfs2/glock.c:1527 Code: ef e8 3d f6 34 fe 0f b7 4d 00 48 c7 c7 00 97 ed 8a 4c 89 e6 89 da e8 18 58 a8 06 31 ff 4c 89 f6 ba 01 00 00 00 e8 d9 86 ff ff <0f> 0b e8 12 1a eb fd e8 cd 21 6b fd e9 0f f9 ff ff 48 8d 5a 08 48 RSP: 0018:ffffc90003df7a58 EFLAGS: 00010246 RAX: 416a04890d125d00 RBX: 0000000000000008 RCX: ffff888026b50000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88805ed8035a R08: ffffffff839506c9 R09: fffffbfff1c14c0e R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880283052c0 R13: dffffc0000000000 R14: ffff888072f428a0 R15: ffff88805ed80322 FS: 0000555580030500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e47d89f950 CR3: 0000000074873000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: gfs2_glock_nq_init fs/gfs2/glock.h:246 [inline] do_sync+0x3b3/0xc60 fs/gfs2/quota.c:921 gfs2_quota_sync+0x379/0x810 fs/gfs2/quota.c:1329 gfs2_sync_fs+0x49/0xb0 fs/gfs2/super.c:647 sync_filesystem+0xe8/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x310 fs/super.c:448 kill_block_super+0x7a/0xe0 fs/super.c:1427 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fd083528057 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd0d084e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fd0835a28f4 RCX: 00007fd083528057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd0d084f40 RBP: 00007ffd0d084f40 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd0d085fc0 R13: 00007fd0835a28f4 R14: 00007ffd0d086000 R15: 00000000000000ac Modules linked in: ---[ end trace 36344b0a8e987ba0 ]--- RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline] RIP: 0010:gfs2_glock_nq+0x10c7/0x15e0 fs/gfs2/glock.c:1527 Code: ef e8 3d f6 34 fe 0f b7 4d 00 48 c7 c7 00 97 ed 8a 4c 89 e6 89 da e8 18 58 a8 06 31 ff 4c 89 f6 ba 01 00 00 00 e8 d9 86 ff ff <0f> 0b e8 12 1a eb fd e8 cd 21 6b fd e9 0f f9 ff ff 48 8d 5a 08 48 RSP: 0018:ffffc90003df7a58 EFLAGS: 00010246 RAX: 416a04890d125d00 RBX: 0000000000000008 RCX: ffff888026b50000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88805ed8035a R08: ffffffff839506c9 R09: fffffbfff1c14c0e R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880283052c0 R13: dffffc0000000000 R14: ffff888072f428a0 R15: ffff88805ed80322 FS: 0000555580030500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e47d89f950 CR3: 0000000074873000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400