------------[ cut here ]------------ kernel BUG at fs/ocfs2/aops.c:1159! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 11867 Comm: syz.4.1136 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] RIP: 0010:ocfs2_write_cluster_by_desc+0x1db4/0x1de0 fs/ocfs2/aops.c:1219 Code: 00 48 c7 c6 5a d4 5a 8d ba 6a 04 00 00 48 c7 c1 60 4a 91 8b e8 1d 71 1d 00 48 8b 04 24 c6 40 1e f8 90 0f 0b e8 0d 09 15 fe 90 <0f> 0b e8 05 09 15 fe 90 0f 0b e8 fd 08 15 fe 90 0f 0b e8 f5 08 15 RSP: 0018:ffffc900050767e0 EFLAGS: 00010246 RAX: ffffffff83af4703 RBX: ffff88803bb30014 RCX: 0000000000080000 RDX: ffffc900060a1000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc90005076b10 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1ed4717 R12: ffff88806ca14000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88803bb30014 FS: 00007ff3f43ee6c0(0000) GS:ffff888126340000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc5032fc60 CR3: 000000003cf32000 CR4: 00000000003526f0 Call Trace: ocfs2_write_begin_nolock+0x3316/0x41e0 fs/ocfs2/aops.c:1795 ocfs2_dio_wr_get_block+0xbbf/0x1800 fs/ocfs2/aops.c:2213 get_more_blocks fs/direct-io.c:648 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x1671/0x3330 fs/direct-io.c:1243 ocfs2_direct_IO+0x253/0x2c0 fs/ocfs2/aops.c:2440 generic_file_direct_write+0x1dc/0x3e0 mm/filemap.c:4248 __generic_file_write_iter+0x120/0x240 mm/filemap.c:4417 ocfs2_file_write_iter+0x1666/0x1ed0 fs/ocfs2/file.c:2476 do_iter_readv_writev+0x62b/0x8d0 fs/read_write.c:-1 vfs_writev+0x345/0x9a0 fs/read_write.c:1059 do_pwritev fs/read_write.c:1155 [inline] __do_sys_pwritev2 fs/read_write.c:1213 [inline] __se_sys_pwritev2+0x187/0x2b0 fs/read_write.c:1204 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff3f619c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff3f43ee028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007ff3f6415fa0 RCX: 00007ff3f619c799 RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000006 RBP: 00007ff3f6232bd9 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000009c00 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff3f6416038 R14: 00007ff3f6415fa0 R15: 00007ffde09cbfe8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] RIP: 0010:ocfs2_write_cluster_by_desc+0x1db4/0x1de0 fs/ocfs2/aops.c:1219 Code: 00 48 c7 c6 5a d4 5a 8d ba 6a 04 00 00 48 c7 c1 60 4a 91 8b e8 1d 71 1d 00 48 8b 04 24 c6 40 1e f8 90 0f 0b e8 0d 09 15 fe 90 <0f> 0b e8 05 09 15 fe 90 0f 0b e8 fd 08 15 fe 90 0f 0b e8 f5 08 15 RSP: 0018:ffffc900050767e0 EFLAGS: 00010246 RAX: ffffffff83af4703 RBX: ffff88803bb30014 RCX: 0000000000080000 RDX: ffffc900060a1000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc90005076b10 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1ed4717 R12: ffff88806ca14000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88803bb30014 FS: 00007ff3f43ee6c0(0000) GS:ffff888126340000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc5032fc60 CR3: 000000003cf32000 CR4: 00000000003526f0