EXT4-fs (loop5): mounted filesystem without journal. Opts: errors=remount-ro,min_batch_time=0x000000007fffffff,dioread_lock,grpquota,noauto_da_alloc,jqfmt=vfsv1,barrier,auto_da_alloc=0x0000000000000020,orlov,. Quota mode: writeback. ext4 filesystem being mounted at /root/syzkaller-testdir3420130997/syzkaller.dzBYUN/3064/file1 supports timestamps until 2038 (0x7fffffff) ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3355! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17148 Comm: syz-executor.5 Not tainted 5.15.106-syzkaller-00249-g19c0ed55a470 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3355 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2206 Code: c6 ff e9 b5 fb ff ff e8 6a 0a 85 ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 56 0a 85 ff e9 51 f7 ff ff e8 4c 0a 85 ff <0f> 0b e8 55 03 d0 02 e8 40 0a 85 ff 0f 0b e8 39 0a 85 ff 0f 0b e8 RSP: 0018:ffffc90000c36540 EFLAGS: 00010293 RAX: ffffffff81eae174 RBX: 0000000000000001 RCX: ffff88810cdc4f00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000c36650 R08: ffffffff81ead4ab R09: ffffed1021fc523c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102398dc79 R13: 0000000000000001 R14: 1ffff92000186cb8 R15: ffff88811cc6e3c8 FS: 00007f170ee83700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000131b76000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x247/0x3810 fs/ext4/mballoc.c:2658 ext4_mb_new_blocks+0xe3c/0x43f0 fs/ext4/mballoc.c:5623 ext4_ext_map_blocks+0x1a0d/0x7250 fs/ext4/extents.c:4287 ext4_map_blocks+0xaa7/0x1e30 fs/ext4/inode.c:646 _ext4_get_block+0x23b/0x660 fs/ext4/inode.c:803 ext4_get_block+0x39/0x50 fs/ext4/inode.c:820 ext4_block_write_begin+0x5ea/0x12a0 fs/ext4/inode.c:1088 ext4_write_begin+0x6bc/0x13d0 ext4_da_write_begin+0x4a2/0xc30 fs/ext4/inode.c:2986 generic_perform_write+0x2bc/0x5a0 mm/filemap.c:3831 ext4_buffered_write_iter+0x49c/0x630 fs/ext4/file.c:271 ext4_file_write_iter+0x443/0x1cc0 do_iter_readv_writev+0x58e/0x790 do_iter_write+0x1f5/0x760 fs/read_write.c:855 vfs_writev+0x2ac/0x560 fs/read_write.c:928 do_pwritev fs/read_write.c:1025 [inline] __do_sys_pwritev2 fs/read_write.c:1084 [inline] __se_sys_pwritev2+0x1c6/0x2c0 fs/read_write.c:1075 __x64_sys_pwritev2+0xe5/0x100 fs/read_write.c:1075 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+0x61/0xcb RIP: 0033:0x7f1710110169 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:00007f170ee83168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f171022ff80 RCX: 00007f1710110169 RDX: 0000000000000001 RSI: 00000000200009c0 RDI: 0000000000000005 RBP: 00007f171016bca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc3cf85fef R14: 00007f170ee83300 R15: 0000000000022000 Modules linked in: ---[ end trace ca0d11f64a3adb07 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3355 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2206 Code: c6 ff e9 b5 fb ff ff e8 6a 0a 85 ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 56 0a 85 ff e9 51 f7 ff ff e8 4c 0a 85 ff <0f> 0b e8 55 03 d0 02 e8 40 0a 85 ff 0f 0b e8 39 0a 85 ff 0f 0b e8 RSP: 0018:ffffc90000c36540 EFLAGS: 00010293 RAX: ffffffff81eae174 RBX: 0000000000000001 RCX: ffff88810cdc4f00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000c36650 R08: ffffffff81ead4ab R09: ffffed1021fc523c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102398dc79 R13: 0000000000000001 R14: 1ffff92000186cb8 R15: ffff88811cc6e3c8 FS: 00007f170ee83700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020404030 CR3: 0000000131b76000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400