------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3363! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6831 Comm: syz-executor.5 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3363 [inline] RIP: 0010:ext4_get_group_info+0x280/0x2e0 fs/ext4/ext4.h:3358 Code: 0f 85 a8 fe ff ff 48 c7 c2 60 7f df 88 be b7 02 00 00 48 c7 c7 e0 79 df 88 c6 05 48 0c 7a 0a 01 e8 42 a9 42 06 e9 84 fe ff ff <0f> 0b e8 c9 fa b4 ff e9 d4 fd ff ff e8 bf fa b4 ff e9 fc fd ff ff RSP: 0018:ffffc90005a1f5c8 EFLAGS: 00010213 RAX: 0000000000000000 RBX: ffff888078556000 RCX: 0000000000000001 RDX: 1ffff1100f0aac08 RSI: 00000000fffff95a RDI: ffff888078556040 RBP: ffff88807de2c000 R08: 0000000000000000 R09: ffff88807376615b R10: ffffed100e6ecc2b R11: 0000000000000063 R12: 00000000fffff95a R13: ffff88807de2c678 R14: ffffc90005a1f708 R15: ffff88807de2c000 FS: 00007ff740a86700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000213c9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy_gfp+0xc4/0x1280 fs/ext4/mballoc.c:1494 ext4_discard_preallocations+0x768/0xc60 fs/ext4/mballoc.c:4996 ext4_truncate+0x4c5/0x10c0 fs/ext4/inode.c:4187 ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline] ext4_write_begin+0x7bb/0xff0 fs/ext4/inode.c:1237 ext4_da_write_begin+0x468/0x840 fs/ext4/inode.c:2924 generic_perform_write+0x1c7/0x440 mm/filemap.c:3687 ext4_buffered_write_iter+0x169/0x320 fs/ext4/file.c:268 ext4_file_write_iter+0x383/0x1150 fs/ext4/file.c:677 call_write_iter include/linux/fs.h:2086 [inline] new_sync_write+0x368/0x600 fs/read_write.c:503 vfs_write+0x609/0x900 fs/read_write.c:590 ksys_write+0xf4/0x1d0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff740a86188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 000000000d4ba0ff RSI: 00000000200009c0 RDI: 0000000000000007 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd7c018cbf R14: 00007ff740a86300 R15: 0000000000022000 Modules linked in: ---[ end trace b48fd8d616433360 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3363 [inline] RIP: 0010:ext4_get_group_info+0x280/0x2e0 fs/ext4/ext4.h:3358 Code: 0f 85 a8 fe ff ff 48 c7 c2 60 7f df 88 be b7 02 00 00 48 c7 c7 e0 79 df 88 c6 05 48 0c 7a 0a 01 e8 42 a9 42 06 e9 84 fe ff ff <0f> 0b e8 c9 fa b4 ff e9 d4 fd ff ff e8 bf fa b4 ff e9 fc fd ff ff RSP: 0018:ffffc90005a1f5c8 EFLAGS: 00010213 RAX: 0000000000000000 RBX: ffff888078556000 RCX: 0000000000000001 RDX: 1ffff1100f0aac08 RSI: 00000000fffff95a RDI: ffff888078556040 RBP: ffff88807de2c000 R08: 0000000000000000 R09: ffff88807376615b R10: ffffed100e6ecc2b R11: 0000000000000063 R12: 00000000fffff95a R13: ffff88807de2c678 R14: ffffc90005a1f708 R15: ffff88807de2c000 FS: 00007ff740a86700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000970004 CR3: 00000000213c9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400