option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/aops.c:1158! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5306 Comm: syz-executor361 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #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:ocfs2_write_cluster fs/ocfs2/aops.c:1158 [inline] RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1218 Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 cf 1c 9c 8d ba 69 04 00 00 48 c7 c1 40 32 ca 8b e8 58 45 1b 00 90 0f 0b e8 60 36 28 fe 90 <0f> 0b e8 58 36 28 fe 90 0f 0b e8 50 36 28 fe 90 0f 0b e8 48 36 28 RSP: 0018:ffffc9000d3369e0 EFLAGS: 00010293 RAX: ffffffff839816c0 RBX: ffff8880333c4014 RCX: ffff888000fec880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000d336d10 R08: ffff8880456bc023 R09: 1ffff11008ad7804 R10: dffffc0000000000 R11: ffffed1008ad7805 R12: ffff888011f6c000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880333c4014 FS: 0000555583a46380(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f72bba64100 CR3: 000000004269f000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1795 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1882 generic_perform_write+0x2c7/0x910 mm/filemap.c:4112 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469 iter_file_splice_write+0x93a/0x1000 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1158 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417 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: 0033:0x7f72bb9e8b59 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd17ff6e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f72bb9e8b59 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f72bba605f0 R08: 0000555583a474c0 R09: 0000555583a474c0 R10: 0001000000201005 R11: 0000000000000246 R12: 00007ffd17ff6ea0 R13: 00007ffd17ff70c8 R14: 431bde82d7b634db R15: 00007f72bba3103b Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1158 [inline] RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1218 Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 cf 1c 9c 8d ba 69 04 00 00 48 c7 c1 40 32 ca 8b e8 58 45 1b 00 90 0f 0b e8 60 36 28 fe 90 <0f> 0b e8 58 36 28 fe 90 0f 0b e8 50 36 28 fe 90 0f 0b e8 48 36 28 RSP: 0018:ffffc9000d3369e0 EFLAGS: 00010293 RAX: ffffffff839816c0 RBX: ffff8880333c4014 RCX: ffff888000fec880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000d336d10 R08: ffff8880456bc023 R09: 1ffff11008ad7804 R10: dffffc0000000000 R11: ffffed1008ad7805 R12: ffff888011f6c000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880333c4014 FS: 0000555583a46380(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f72bba64100 CR3: 000000004269f000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400