------------[ cut here ]------------ kernel BUG at fs/ocfs2/uptodate.c:509! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5109 Comm: syz.0.0 Not tainted 6.11.0-syzkaller-09015-g18ba6034468e #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ocfs2_set_new_buffer_uptodate+0x145/0x160 fs/ocfs2/uptodate.c:509 Code: 03 42 80 3c 20 00 74 08 48 89 df e8 05 5a 62 fe 4c 8b 1b 4c 89 ff 5b 41 5c 41 5d 41 5e 41 5f 41 ff e3 cc 90 e8 0c a6 f8 fd 90 <0f> 0b e8 04 a6 f8 fd 90 0f 0b e8 fc a5 f8 fd 90 0f 0b e8 f4 a5 f8 RSP: 0018:ffffc9000b647a50 EFLAGS: 00010293 RAX: ffffffff839c0dc4 RBX: 0000000000000001 RCX: ffff88801f54a440 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000b647cf0 R08: ffffffff839c0cae R09: 1ffffffff20394dd R10: dffffc0000000000 R11: fffffbfff20394de R12: dffffc0000000000 R13: 1ffff920016c8f68 R14: ffff88801a98a910 R15: ffff888012c28830 FS: 00007fa3d95576c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa3d9556f98 CR3: 000000003d7ec000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_group_add+0x39f/0x15a0 fs/ocfs2/resize.c:507 ocfs2_ioctl+0x65e/0x7d0 fs/ocfs2/ioctl.c:891 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa3d877def9 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:00007fa3d9557038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa3d8936058 RCX: 00007fa3d877def9 RDX: 00000000200000c0 RSI: 0000000040186f02 RDI: 0000000000000004 RBP: 00007fa3d87f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fa3d8936058 R15: 00007ffd12699228 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_set_new_buffer_uptodate+0x145/0x160 fs/ocfs2/uptodate.c:509 Code: 03 42 80 3c 20 00 74 08 48 89 df e8 05 5a 62 fe 4c 8b 1b 4c 89 ff 5b 41 5c 41 5d 41 5e 41 5f 41 ff e3 cc 90 e8 0c a6 f8 fd 90 <0f> 0b e8 04 a6 f8 fd 90 0f 0b e8 fc a5 f8 fd 90 0f 0b e8 f4 a5 f8 RSP: 0018:ffffc9000b647a50 EFLAGS: 00010293 RAX: ffffffff839c0dc4 RBX: 0000000000000001 RCX: ffff88801f54a440 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000b647cf0 R08: ffffffff839c0cae R09: 1ffffffff20394dd R10: dffffc0000000000 R11: fffffbfff20394de R12: dffffc0000000000 R13: 1ffff920016c8f68 R14: ffff88801a98a910 R15: ffff888012c28830 FS: 00007fa3d95576c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa3d9556f98 CR3: 000000003d7ec000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400