EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodiscard,noquota,init_itable,stripe=0x0000000000000079,resgid=0x0000000000000000,sysvgroups,delalloc,errors=continue, ext4 filesystem being mounted at /root/syzkaller.A5TfiU/19/file1 supports timestamps until 2038 (0x7fffffff) ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:2984! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 607 Comm: syz.0.68 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline] RIP: 0010:ext4_mb_find_by_goal+0xba1/0xbe0 fs/ext4/mballoc.c:1830 Code: fc ff ff 48 8b 4c 24 28 80 e1 07 80 c1 03 38 c1 0f 8c 22 fc ff ff 48 8b 7c 24 28 e8 99 74 c8 ff e9 13 fc ff ff e8 8f 8f 98 ff <0f> 0b e8 d8 44 6f ff e8 83 8f 98 ff 0f 0b e8 7c 8f 98 ff 0f 0b e8 RSP: 0018:ffff8881d5b3f220 EFLAGS: 00010283 RAX: ffffffff81cbac91 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90000741000 RSI: 0000000000000451 RDI: 0000000000000452 RBP: ffff8881d5b3f330 R08: ffffffff81cba211 R09: ffffed103abe367d R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881e6d813f0 R14: 0000000000000001 R15: 1ffff1103cdb027e FS: 00007f7dd909c6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7dd0c8b000 CR3: 00000001d5acb000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x229/0x10d0 fs/ext4/mballoc.c:2132 ext4_mb_new_blocks+0x59a/0x2d10 fs/ext4/mballoc.c:4604 ext4_new_meta_blocks+0x201/0x490 fs/ext4/balloc.c:704 ext4_ext_grow_indepth fs/ext4/extents.c:1349 [inline] ext4_ext_create_new_leaf fs/ext4/extents.c:1453 [inline] ext4_ext_insert_extent+0xe53/0x42c0 fs/ext4/extents.c:2133 ext4_split_extent_at+0x812/0x1100 fs/ext4/extents.c:3421 ext4_force_split_extent_at fs/ext4/extents.c:308 [inline] ext4_ext_remove_space+0x6f3/0x4ba0 fs/ext4/extents.c:3065 ext4_punch_hole+0x6ac/0xad0 fs/ext4/inode.c:4492 ext4_fallocate+0x265/0x570 fs/ext4/extents.c:4946 vfs_fallocate+0x551/0x6b0 fs/open.c:309 ksys_fallocate fs/open.c:332 [inline] __do_sys_fallocate fs/open.c:340 [inline] __se_sys_fallocate fs/open.c:338 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:338 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f7dd9e1ab29 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:00007f7dd909c048 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f7dd9fa8fa0 RCX: 00007f7dd9e1ab29 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007f7dd9e9b756 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001a00 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7dd9fa8fa0 R15: 00007ffc0db8da28 Modules linked in: ---[ end trace 9af63151c161c270 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline] RIP: 0010:ext4_mb_find_by_goal+0xba1/0xbe0 fs/ext4/mballoc.c:1830 Code: fc ff ff 48 8b 4c 24 28 80 e1 07 80 c1 03 38 c1 0f 8c 22 fc ff ff 48 8b 7c 24 28 e8 99 74 c8 ff e9 13 fc ff ff e8 8f 8f 98 ff <0f> 0b e8 d8 44 6f ff e8 83 8f 98 ff 0f 0b e8 7c 8f 98 ff 0f 0b e8 RSP: 0018:ffff8881d5b3f220 EFLAGS: 00010283 RAX: ffffffff81cbac91 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90000741000 RSI: 0000000000000451 RDI: 0000000000000452 RBP: ffff8881d5b3f330 R08: ffffffff81cba211 R09: ffffed103abe367d R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881e6d813f0 R14: 0000000000000001 R15: 1ffff1103cdb027e FS: 00007f7dd909c6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9ef684178 CR3: 00000001d5acb000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400