loop0: detected capacity change from 1051 to 0 EXT4-fs (loop0): ext4_check_descriptors: Checksum for group 0 failed (60935!=0) EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback. ------------[ cut here ]------------ kernel BUG at fs/ext4/extents_status.c:899! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5872 Comm: syz-executor991 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ext4_es_cache_extent+0x3e2/0x420 fs/ext4/extents_status.c:899 Code: 48 8b 0c 24 e9 cc fc ff ff 44 89 44 24 0c 48 89 0c 24 e8 d1 4c bc ff 44 8b 44 24 0c 48 8b 0c 24 e9 d6 fc ff ff e8 be eb 4b 06 <0f> 0b 48 c7 c7 40 dd 1e 8c e8 b0 4c bc ff e9 1a ff ff ff e8 a6 4c RSP: 0018:ffffc9000162eee0 EFLAGS: 00010217 RAX: 0000000000000001 RBX: 1ffff920002c5dde RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff888afa20 RDI: ffffffff88ddc5c0 RBP: ffff88802ab5dd38 R08: 0000000000000000 R09: ffffffff8c32288f R10: fffffbfff1864511 R11: 0000000000000001 R12: 000000000000527e R13: 00000000ffffffff R14: 0000000000000001 R15: 00000000ffffffff FS: 0000555556c33300(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 0000000015d1e000 CR4: 0000000000350ee0 Call Trace: ext4_cache_extents+0xe4/0x240 fs/ext4/extents.c:480 ext4_find_extent+0x88c/0xc70 fs/ext4/extents.c:874 ext4_ext_map_blocks+0x1a7/0x4df0 fs/ext4/extents.c:4054 ext4_map_blocks+0x718/0x1280 fs/ext4/inode.c:562 ext4_getblk+0x111/0x550 fs/ext4/inode.c:847 ext4_bread_batch+0x68/0x3d0 fs/ext4/inode.c:920 __ext4_find_entry+0x3b3/0xd50 fs/ext4/namei.c:1512 ext4_lookup_entry fs/ext4/namei.c:1613 [inline] ext4_lookup fs/ext4/namei.c:1681 [inline] ext4_lookup+0x13b/0x5c0 fs/ext4/namei.c:1672 __lookup_slow+0x1fe/0x3c0 fs/namei.c:1544 lookup_slow fs/namei.c:1561 [inline] walk_component+0x364/0x5e0 fs/namei.c:1861 link_path_walk.part.0+0x4eb/0x930 fs/namei.c:2186 link_path_walk fs/namei.c:2113 [inline] path_openat+0x206/0x2190 fs/namei.c:3367 do_filp_open+0x16d/0x390 fs/namei.c:3398 do_sys_openat2+0x11e/0x360 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_openat fs/open.c:1204 [inline] __se_sys_openat fs/open.c:1199 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1199 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f63dc65df09 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffec6cdce78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f63dc65df09 RDX: 000000000000c880 RSI: 0000000020000100 RDI: 0000000000000005 RBP: 00007f63dc61d700 R08: 0000000800000015 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63dc61d790 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 7c6702185d50fdc5 ]--- RIP: 0010:ext4_es_cache_extent+0x3e2/0x420 fs/ext4/extents_status.c:899 Code: 48 8b 0c 24 e9 cc fc ff ff 44 89 44 24 0c 48 89 0c 24 e8 d1 4c bc ff 44 8b 44 24 0c 48 8b 0c 24 e9 d6 fc ff ff e8 be eb 4b 06 <0f> 0b 48 c7 c7 40 dd 1e 8c e8 b0 4c bc ff e9 1a ff ff ff e8 a6 4c RSP: 0018:ffffc9000162eee0 EFLAGS: 00010217 RAX: 0000000000000001 RBX: 1ffff920002c5dde RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff888afa20 RDI: ffffffff88ddc5c0 RBP: ffff88802ab5dd38 R08: 0000000000000000 R09: ffffffff8c32288f R10: fffffbfff1864511 R11: 0000000000000001 R12: 000000000000527e R13: 00000000ffffffff R14: 0000000000000001 R15: 00000000ffffffff FS: 0000555556c33300(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 0000000015d1e000 CR4: 0000000000350ee0