EXT4-fs (loop4): mounted filesystem without journal. Opts: noblock_validity,bsddf,max_dir_size_kb=0x0000000000000002,norecovery,debug_want_extra_isize=0x0000000000000080,block_validity,nomblk_io_submit,noauto_da_alloc,nomblk_io_submit,,errors=continue ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:2985! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6257 Comm: syz.4.1581 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2985 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xeb2/0xed0 fs/ext4/mballoc.c:1117 Code: ff e8 82 5e cd ff e9 82 f3 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c c8 f3 ff ff e8 88 5e cd ff e9 be f3 ff ff e8 ce 63 9f ff <0f> 0b e8 c7 63 9f ff 0f 0b e8 c0 63 9f ff 0f 0b e8 b9 63 9f ff 0f RSP: 0018:ffff8881e65df1b8 EFLAGS: 00010283 RAX: ffffffff81c01b12 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc90001948000 RSI: 00000000000003bb RDI: 00000000000003bc RBP: ffff8881e65df240 R08: dffffc0000000000 R09: ffff8881e65df2a0 R10: ffffed103ccbbe5b R11: 1ffff1103ccbbe54 R12: 1ffff1103995ce7e R13: ffff8881ccae4000 R14: ffff8881ccae7018 R15: 0000000000000001 FS: 00007f03f39d26c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000008007f CR3: 00000001e50c2000 CR4: 00000000003426b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy fs/ext4/mballoc.c:1242 [inline] ext4_mballoc_query_range+0x63/0x470 fs/ext4/mballoc.c:5446 ext4_getfsmap_datadev+0x1a44/0x2450 fs/ext4/fsmap.c:589 ext4_getfsmap+0xa2b/0xc60 fs/ext4/fsmap.c:762 ext4_ioc_getfsmap fs/ext4/ioctl.c:679 [inline] ext4_ioctl+0x32b5/0x3aa0 fs/ext4/ioctl.c:832 do_vfs_ioctl+0x753/0x13f0 fs/ioctl.c:47 ksys_ioctl fs/ioctl.c:742 [inline] __do_sys_ioctl fs/ioctl.c:749 [inline] __se_sys_ioctl fs/ioctl.c:747 [inline] __x64_sys_ioctl+0xe1/0x120 fs/ioctl.c:747 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f03f5369969 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:00007f03f39d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f03f5590fa0 RCX: 00007f03f5369969 RDX: 00002000000005c0 RSI: 00000000c0c0583b RDI: 0000000000000006 RBP: 00007f03f53ebab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f03f5590fa0 R15: 00007ffecaae6918 Modules linked in: ---[ end trace 73bb2039f7bb86fb ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2985 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xeb2/0xed0 fs/ext4/mballoc.c:1117 Code: ff e8 82 5e cd ff e9 82 f3 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c c8 f3 ff ff e8 88 5e cd ff e9 be f3 ff ff e8 ce 63 9f ff <0f> 0b e8 c7 63 9f ff 0f 0b e8 c0 63 9f ff 0f 0b e8 b9 63 9f ff 0f RSP: 0018:ffff8881e65df1b8 EFLAGS: 00010283 RAX: ffffffff81c01b12 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc90001948000 RSI: 00000000000003bb RDI: 00000000000003bc RBP: ffff8881e65df240 R08: dffffc0000000000 R09: ffff8881e65df2a0 R10: ffffed103ccbbe5b R11: 1ffff1103ccbbe54 R12: 1ffff1103995ce7e R13: ffff8881ccae4000 R14: ffff8881ccae7018 R15: 0000000000000001 FS: 00007f03f39d26c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2783051178 CR3: 00000001e50c2000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400