loop4: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,4) on (node local, slot 0) with writeback data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/aops.c:1159! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 8424 Comm: syz.4.425 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] pc : ocfs2_write_cluster_by_desc+0x1758/0x1784 fs/ocfs2/aops.c:1219 lr : ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] lr : ocfs2_write_cluster_by_desc+0x1758/0x1784 fs/ocfs2/aops.c:1219 sp : ffff80009e2d6ae0 x29: ffff80009e2d6e00 x28: ffff0000f2b85df8 x27: ffff0000d148c030 x26: ffff0000d148c028 x25: ffff0000d148c848 x24: dfff800000000000 x23: ffff0000d148c014 x22: ffff0000f2b85e20 x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000004 x18: 00000000ffffffff x17: ffff800093335000 x16: ffff800080538320 x15: 0000000000000001 x14: 1fffe0001e570b94 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 0000000000001dda x9 : ffff8000aa239000 x8 : 0000000000001ddb x7 : ffff80008215db24 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800080538428 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] (P) ocfs2_write_cluster_by_desc+0x1758/0x1784 fs/ocfs2/aops.c:1219 (P) ocfs2_write_begin_nolock+0x2808/0x3864 fs/ocfs2/aops.c:1796 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1884 generic_perform_write+0x244/0x7bc mm/filemap.c:4254 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4371 ocfs2_file_write_iter+0x1328/0x1b84 fs/ocfs2/file.c:2469 do_iter_readv_writev+0x4bc/0x720 fs/read_write.c:-1 vfs_writev+0x29c/0x7cc fs/read_write.c:1057 do_pwritev fs/read_write.c:1153 [inline] __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2 fs/read_write.c:1202 [inline] __arm64_sys_pwritev2+0x1bc/0x2cc fs/read_write.c:1202 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: 52808d42 9405ef70 d4210000 97985f16 (d4210000) ---[ end trace 0000000000000000 ]---