EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /0/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): resizing filesystem from 0 to 8 blocks ------------[ cut here ]------------ kernel BUG at fs/ext4/resize.c:544! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 373 Comm: syz.2.16 Not tainted 5.10.236-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:setup_new_flex_group_blocks fs/ext4/resize.c:543 [inline] RIP: 0010:ext4_flex_group_add+0x4827/0x4840 fs/ext4/resize.c:1499 Code: ff ff e8 fc 13 85 ff 0f 0b e8 f5 13 85 ff 0f 0b e8 ee 13 85 ff 0f 0b e8 e7 13 85 ff 0f 0b e8 e0 13 85 ff 0f 0b e8 d9 13 85 ff <0f> 0b e8 12 30 c8 02 e8 cd 13 85 ff 0f 0b 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90000c573a0 EFLAGS: 00010293 RAX: ffffffff81e5ac17 RBX: 0000000000000001 RCX: ffff8881293c4f00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000c57630 R08: ffffffff81e568bb R09: 0000000000000003 R10: fffff5200018ae54 R11: dffffc0000000001 R12: 1ffff110222b5000 R13: dffffc0000000000 R14: ffff888111051400 R15: 0000000000000000 FS: 00007f16c319b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16c3179f98 CR3: 000000011150e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_resize_fs+0x38bc/0x4980 fs/ext4/resize.c:2105 __ext4_ioctl fs/ext4/ioctl.c:1088 [inline] ext4_ioctl+0x2464/0x66d0 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+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f16c372a969 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:00007f16c319b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f16c3951fa0 RCX: 00007f16c372a969 RDX: 0000200000000140 RSI: 0000000040086610 RDI: 0000000000000004 RBP: 00007f16c37acab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f16c3951fa0 R15: 00007fff4691b108 Modules linked in: ---[ end trace cb21d8ad5e7f89ae ]--- RIP: 0010:setup_new_flex_group_blocks fs/ext4/resize.c:543 [inline] RIP: 0010:ext4_flex_group_add+0x4827/0x4840 fs/ext4/resize.c:1499 Code: ff ff e8 fc 13 85 ff 0f 0b e8 f5 13 85 ff 0f 0b e8 ee 13 85 ff 0f 0b e8 e7 13 85 ff 0f 0b e8 e0 13 85 ff 0f 0b e8 d9 13 85 ff <0f> 0b e8 12 30 c8 02 e8 cd 13 85 ff 0f 0b 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90000c573a0 EFLAGS: 00010293 RAX: ffffffff81e5ac17 RBX: 0000000000000001 RCX: ffff8881293c4f00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000c57630 R08: ffffffff81e568bb R09: 0000000000000003 R10: fffff5200018ae54 R11: dffffc0000000001 R12: 1ffff110222b5000 R13: dffffc0000000000 R14: ffff888111051400 R15: 0000000000000000 FS: 00007f16c319b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16c3179f98 CR3: 000000011150e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400