------------[ cut here ]------------ kernel BUG at fs/ocfs2/aops.c:1159! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 23227 Comm: syz.9.3648 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 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 15 f8 f3 8d ba 6a 04 00 00 48 c7 c1 e0 a1 11 8c e8 cd fd 1c 00 48 8b 04 24 c6 40 1e f8 90 0f 0b e8 ed 3b 0d fe 90 <0f> 0b e8 e5 3b 0d fe 90 0f 0b e8 dd 3b 0d fe 90 0f 0b e8 d5 3b 0d RSP: 0000:ffffc90004d55cc0 EFLAGS: 00010293 RAX: ffffffff83b861e3 RBX: ffff888033b14014 RCX: ffff888035d51e40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004d55ff0 R08: ffff88807765dca3 R09: 1ffff1100eecbb94 R10: dffffc0000000000 R11: ffffed100eecbb95 R12: ffff888022b58000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888033b14014 FS: 00007feec34a66c0(0000) GS:ffff88812546a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f016fe3a270 CR3: 000000008e4da000 CR4: 00000000003526f0 Call Trace: ocfs2_write_begin_nolock+0x3316/0x41e0 fs/ocfs2/aops.c:1796 ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1884 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314 ocfs2_file_write_iter+0x1663/0x1ed0 fs/ocfs2/file.c:2476 __kernel_write_iter+0x41e/0x880 fs/read_write.c:621 dump_emit_page fs/coredump.c:1299 [inline] dump_user_range+0xb89/0x12d0 fs/coredump.c:1373 elf_core_dump+0x34c2/0x3ad0 fs/binfmt_elf.c:2111 coredump_write+0x1219/0x1950 fs/coredump.c:1050 do_coredump fs/coredump.c:1127 [inline] vfs_coredump+0x36a9/0x4280 fs/coredump.c:1201 get_signal+0x1107/0x1330 kernel/signal.c:3019 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop kernel/entry/common.c:98 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0x176/0x620 kernel/entry/common.c:219 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0033:0x7feec259aec1 Code: 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 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f RSP: 002b:fffffffffffffe70 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007feec2815fa0 RCX: 00007feec259aeb9 RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000 RBP: 00007feec2608c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 00007feec2816038 R14: 00007feec2815fa0 R15: 00007fffdc00ca78 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 15 f8 f3 8d ba 6a 04 00 00 48 c7 c1 e0 a1 11 8c e8 cd fd 1c 00 48 8b 04 24 c6 40 1e f8 90 0f 0b e8 ed 3b 0d fe 90 <0f> 0b e8 e5 3b 0d fe 90 0f 0b e8 dd 3b 0d fe 90 0f 0b e8 d5 3b 0d RSP: 0000:ffffc90004d55cc0 EFLAGS: 00010293 RAX: ffffffff83b861e3 RBX: ffff888033b14014 RCX: ffff888035d51e40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004d55ff0 R08: ffff88807765dca3 R09: 1ffff1100eecbb94 R10: dffffc0000000000 R11: ffffed100eecbb95 R12: ffff888022b58000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888033b14014 FS: 00007feec34a66c0(0000) GS:ffff88812546a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555569cd0aa8 CR3: 000000008e4da000 CR4: 00000000003526f0