loop2: detected capacity change from 0 to 512 ext4: Bad value for 'init_itable' EXT4-fs error (device loop2): ext4_free_branches:1030: inode #13: comm syz.2.17: invalid indirect mapped block 10 (level 1) Kernel panic - not syncing: EXT4-fs (device loop2): panic forced after error CPU: 0 PID: 567 Comm: syz.2.17 Not tainted 6.1.145-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:88 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106 dump_stack+0x15/0x24 lib/dump_stack.c:113 panic+0x283/0x698 kernel/panic.c:339 ext4_handle_error+0x7a3/0x860 fs/ext4/super.c:686 __ext4_error_inode+0x2ce/0x560 fs/ext4/super.c:810 ext4_free_branches+0x655/0x6b0 fs/ext4/indirect.c:1027 ext4_ind_truncate+0x55b/0xb20 fs/ext4/indirect.c:1181 ext4_truncate+0x98e/0xf90 fs/ext4/inode.c:4291 ext4_process_orphan+0x1d9/0x320 fs/ext4/orphan.c:339 ext4_orphan_cleanup+0xb02/0x1210 fs/ext4/orphan.c:474 __ext4_fill_super fs/ext4/super.c:5535 [inline] ext4_fill_super+0x74e1/0x7a20 fs/ext4/super.c:5666 get_tree_bdev+0x441/0x680 fs/super.c:1366 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5696 vfs_get_tree+0x9a/0x270 fs/super.c:1573 do_new_mount+0x25a/0xa20 fs/namespace.c:3058 path_mount+0x675/0x1010 fs/namespace.c:3388 do_mount fs/namespace.c:3401 [inline] __do_sys_mount fs/namespace.c:3609 [inline] __se_sys_mount+0x318/0x380 fs/namespace.c:3586 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3586 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f64b0b8ebe9 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:00007f64b1a39038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f64b0db5fa0 RCX: 00007f64b0b8ebe9 RDX: 00002000000001c0 RSI: 0000200000000240 RDI: 0000200000000000 RBP: 00007f64b0c11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f64b0db6038 R14: 00007f64b0db5fa0 R15: 00007ffe047b8538 Kernel Offset: disabled Rebooting in 86400 seconds..