EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3331! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5076 Comm: syz-executor120 Not tainted 6.2.0-syzkaller-05251-g5b7c4cabbb65 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3331 Code: 4d ff 8b 74 24 04 48 c7 c7 a0 e0 0b 8d 4c 89 f2 e8 7c 5e 37 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 d7 c5 4d ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90003d7f250 EFLAGS: 00010293 RAX: ffffffff823eda39 RBX: 0000000000000001 RCX: ffff888076568000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff823ed709 R09: ffffc90003d7f3c0 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100543e0cf R13: dffffc0000000000 R14: ffff88801c95c000 R15: ffff88802a1f0678 FS: 0000555556a38300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcc80a4e568 CR3: 0000000027ca1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy_gfp+0xc3/0x820 fs/ext4/mballoc.c:1448 ext4_mb_load_buddy fs/ext4/mballoc.c:1570 [inline] ext4_mballoc_query_range+0xc6/0x830 fs/ext4/mballoc.c:6573 ext4_getfsmap_datadev+0x1c77/0x26a0 fs/ext4/fsmap.c:537 ext4_getfsmap+0xcca/0x1070 fs/ext4/fsmap.c:708 ext4_ioc_getfsmap fs/ext4/ioctl.c:902 [inline] __ext4_ioctl fs/ext4/ioctl.c:1226 [inline] ext4_ioctl+0x42dc/0x6260 fs/ext4/ioctl.c:1610 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcc80a0b419 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffca4fe3408 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fcc80a0b419 RDX: 0000000020000380 RSI: 00000000c0c0583b RDI: 0000000000000004 RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d R10: 000000000000041b R11: 0000000000000246 R12: 00007fcc809ca5f0 R13: 00007ffca4fe3430 R14: 00007ffca4fe341c R15: 00007ffca4fe3420 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3331 Code: 4d ff 8b 74 24 04 48 c7 c7 a0 e0 0b 8d 4c 89 f2 e8 7c 5e 37 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 d7 c5 4d ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90003d7f250 EFLAGS: 00010293 RAX: ffffffff823eda39 RBX: 0000000000000001 RCX: ffff888076568000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff823ed709 R09: ffffc90003d7f3c0 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100543e0cf R13: dffffc0000000000 R14: ffff88801c95c000 R15: ffff88802a1f0678 FS: 0000555556a38300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffca4fe33e8 CR3: 0000000027ca1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400