------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3331! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5235 Comm: syz-executor.4 Not tainted 6.1.25-syzkaller-00045-gd51e21b39415 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2162 Code: c4 ff e9 b5 fb ff ff e8 ba 55 7e ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 a6 55 7e ff e9 51 f7 ff ff e8 9c 55 7e ff <0f> 0b e8 f5 3d f8 02 e8 90 55 7e ff 0f 0b e8 89 55 7e ff 0f 0b e8 RSP: 0018:ffffc9000d886a20 EFLAGS: 00010283 RAX: ffffffff81f69124 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc900054f0000 RSI: 0000000000000244 RDI: 0000000000000245 RBP: ffffc9000d886b30 R08: ffffffff81f6845b R09: ffffed102173eb7b R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11021a43479 R13: 0000000000000001 R14: 1ffff92001b10d54 R15: ffff88810d21a3c8 FS: 00007fab16bb96c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555569fd818 CR3: 000000011228b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x24c/0x3610 fs/ext4/mballoc.c:2614 ext4_mb_new_blocks+0xfd3/0x48f0 fs/ext4/mballoc.c:5611 ext4_alloc_branch fs/ext4/indirect.c:340 [inline] ext4_ind_map_blocks+0xfb2/0x2760 fs/ext4/indirect.c:635 ext4_map_blocks+0x9dd/0x1ce0 fs/ext4/inode.c:653 _ext4_get_block+0x23b/0x660 fs/ext4/inode.c:808 ext4_get_block+0x39/0x50 fs/ext4/inode.c:825 ext4_block_write_begin+0x55e/0x1200 fs/ext4/inode.c:1098 ext4_write_begin+0x5e0/0xfb0 ext4_da_write_begin+0x2ff/0x920 fs/ext4/inode.c:2987 generic_perform_write+0x2f9/0x5c0 mm/filemap.c:3765 ext4_buffered_write_iter+0x360/0x640 fs/ext4/file.c:285 ext4_file_write_iter+0x194/0x1cf0 call_write_iter include/linux/fs.h:2215 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x8d1/0xe80 fs/read_write.c:584 ksys_write+0x199/0x2c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fab15e7cb29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fab16bb90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fab15f9bf80 RCX: 00007fab15e7cb29 RDX: 0000000000000010 RSI: 0000000020000640 RDI: 0000000000000006 RBP: 00007fab15ec847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fab15f9bf80 R15: 00007ffc7afa4248 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2162 Code: c4 ff e9 b5 fb ff ff e8 ba 55 7e ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 a6 55 7e ff e9 51 f7 ff ff e8 9c 55 7e ff <0f> 0b e8 f5 3d f8 02 e8 90 55 7e ff 0f 0b e8 89 55 7e ff 0f 0b e8 RSP: 0018:ffffc9000d886a20 EFLAGS: 00010283 RAX: ffffffff81f69124 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc900054f0000 RSI: 0000000000000244 RDI: 0000000000000245 RBP: ffffc9000d886b30 R08: ffffffff81f6845b R09: ffffed102173eb7b R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11021a43479 R13: 0000000000000001 R14: 1ffff92001b10d54 R15: ffff88810d21a3c8 FS: 00007fab16bb96c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555569fd818 CR3: 000000011228b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400