Kernel panic - not syncing: EXT4-fs (device loop5): panic forced after error CPU: 0 PID: 295 Comm: syz-executor129 Not tainted 5.15.131-syzkaller-00653-gea586874d2f9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 dump_stack+0x15/0x17 lib/dump_stack.c:113 panic+0x287/0x751 kernel/panic.c:309 ext4_handle_error+0x779/0x780 fs/ext4/super.c:667 __ext4_error+0x1ae/0x3d0 fs/ext4/super.c:756 ext4_validate_block_bitmap+0x1075/0x1410 ext4_wait_block_bitmap+0x1b2/0x1d0 fs/ext4/balloc.c:579 ext4_read_block_bitmap+0x41/0x80 fs/ext4/balloc.c:591 ext4_mb_clear_bb fs/ext4/mballoc.c:6009 [inline] ext4_free_blocks+0xf32/0x2ab0 fs/ext4/mballoc.c:6254 ext4_remove_blocks fs/ext4/extents.c:2543 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2709 [inline] ext4_ext_remove_space+0x267c/0x4a60 fs/ext4/extents.c:2957 ext4_ext_truncate+0x19a/0x240 fs/ext4/extents.c:4419 ext4_truncate+0x96c/0xfa0 fs/ext4/inode.c:4269 ext4_process_orphan+0x1d3/0x2f0 fs/ext4/orphan.c:339 ext4_orphan_cleanup+0x909/0x1060 fs/ext4/orphan.c:474 ext4_fill_super+0x8dc8/0x96e0 fs/ext4/super.c:4965 mount_bdev+0x282/0x3b0 fs/super.c:1387 ext4_mount+0x34/0x40 fs/ext4/super.c:6581 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x28b/0xad0 fs/namespace.c:2994 path_mount+0x671/0x1070 fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3522 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f951a509bc9 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:00007ffe11fbbeb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f951a509bc9 RDX: 00000000200001c0 RSI: 00000000200006c0 RDI: 0000000020000640 RBP: 00000000000f4240 R08: 0000000000000000 R09: 00005555565d8378 R10: 000000003f000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe11fbbef0 R14: 00007ffe11fbbedc R15: 00007f951a55203b Kernel Offset: disabled Rebooting in 86400 seconds..