EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /root/syzkaller-testdir2487617305/syzkaller.iwftf7/1729/file0 supports timestamps until 2038 (0x7fffffff) ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3247! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 696 Comm: syz-executor.1 Not tainted 5.10.178-syzkaller-00127-g43c801dc3325 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/16/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xf5d/0x1020 fs/ext4/mballoc.c:1174 Code: ff e8 77 3b c8 ff e9 f0 f2 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 52 f3 ff ff e8 7d 3b c8 ff e9 48 f3 ff ff e8 73 2d 8b ff <0f> 0b e9 62 00 00 00 e8 67 2d 8b ff e9 ef fb ff ff e9 65 00 00 00 RSP: 0018:ffffc90008a9f1f0 EFLAGS: 00010283 RAX: ffffffff81df45ad RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90007231000 RSI: 000000000000070d RDI: 000000000000070e RBP: ffffc90008a9f270 R08: ffffffff81df373c R09: ffffc90008a9f320 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff88811cc8d000 R14: 1ffff1102eb03879 R15: ffff88817581c3c8 FS: 00007fba8cc99700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200400bf CR3: 0000000106be4000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy fs/ext4/mballoc.c:1296 [inline] ext4_mballoc_query_range+0xc5/0x7a0 fs/ext4/mballoc.c:5992 ext4_getfsmap_datadev+0x1bf1/0x27b0 fs/ext4/fsmap.c:539 ext4_getfsmap+0xd4e/0x1100 fs/ext4/fsmap.c:710 ext4_ioc_getfsmap fs/ext4/ioctl.c:715 [inline] __ext4_ioctl fs/ext4/ioctl.c:831 [inline] ext4_ioctl+0x38fb/0x68f0 fs/ext4/ioctl.c:1334 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:739 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:739 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fba8df26169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007fba8cc99168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fba8e045f80 RCX: 00007fba8df26169 RDX: 0000000020000200 RSI: 00000000c0c0583b RDI: 0000000000000004 RBP: 00007fba8df81ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffeae95acf R14: 00007fba8cc99300 R15: 0000000000022000 Modules linked in: ---[ end trace 3307193f1622bd8c ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xf5d/0x1020 fs/ext4/mballoc.c:1174 Code: ff e8 77 3b c8 ff e9 f0 f2 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 52 f3 ff ff e8 7d 3b c8 ff e9 48 f3 ff ff e8 73 2d 8b ff <0f> 0b e9 62 00 00 00 e8 67 2d 8b ff e9 ef fb ff ff e9 65 00 00 00 RSP: 0018:ffffc90008a9f1f0 EFLAGS: 00010283 RAX: ffffffff81df45ad RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90007231000 RSI: 000000000000070d RDI: 000000000000070e RBP: ffffc90008a9f270 R08: ffffffff81df373c R09: ffffc90008a9f320 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff88811cc8d000 R14: 1ffff1102eb03879 R15: ffff88817581c3c8 FS: 00007fba8cc99700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200400bf CR3: 0000000106be4000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400