EXT4-fs (loop2): mounted filesystem without journal. Opts: init_itable=0x0000000000000000,debug,,errors=continue ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:2984! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 638 Comm: syz-executor.2 Not tainted 5.4.268-syzkaller-00001-g8322246edffa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xf29/0xf40 fs/ext4/mballoc.c:1117 Code: ff e8 1b bf c9 ff e9 0a f3 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 52 f3 ff ff e8 21 bf c9 ff e9 48 f3 ff ff e8 a7 db 99 ff <0f> 0b e8 a0 db 99 ff 0f 0b e8 99 db 99 ff 0f 0b e8 92 db 99 ff 0f RSP: 0018:ffff8881e60f70e8 EFLAGS: 00010287 RAX: ffffffff81ca6b79 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90001548000 RSI: 000000000000062f RDI: 0000000000000630 RBP: ffff8881e33fc000 R08: ffffffff81ca5d22 R09: ffff8881e60f7220 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1103c67f67e R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881e33fb3f0 FS: 00007fb91ed796c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020051000 CR3: 00000001e870b000 CR4: 00000000003406a0 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+0xcb/0x450 fs/ext4/mballoc.c:5427 ext4_getfsmap_datadev+0x1b27/0x2740 fs/ext4/fsmap.c:539 ext4_getfsmap+0xd4e/0x1100 fs/ext4/fsmap.c:710 ext4_ioc_getfsmap fs/ext4/ioctl.c:679 [inline] ext4_ioctl+0x354a/0x3ff0 fs/ext4/ioctl.c:832 do_vfs_ioctl+0x742/0x1720 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+0xd4/0x110 fs/ioctl.c:747 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Modules linked in: ---[ end trace 1380ead44c743037 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xf29/0xf40 fs/ext4/mballoc.c:1117 Code: ff e8 1b bf c9 ff e9 0a f3 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 52 f3 ff ff e8 21 bf c9 ff e9 48 f3 ff ff e8 a7 db 99 ff <0f> 0b e8 a0 db 99 ff 0f 0b e8 99 db 99 ff 0f 0b e8 92 db 99 ff 0f