syzbot has found a reproducer for the following issue on: HEAD commit: 09688c0166e7 Linux 5.17-rc8 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11a8bd61700000 kernel config: https://syzkaller.appspot.com/x/.config?x=d35f9bc6884af6c9 dashboard link: https://syzkaller.appspot.com/bug?extid=fcc629d1a1ae8d3fe8a5 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1205b189700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15dda4fe700000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fcc629d1a1ae8d3fe8a5@xxxxxxxxxxxxxxxxxxxxxxxxx EXT4-fs warning (device sda1): ext4_block_to_path:105: block 1074791436 > max in inode 1137 ------------[ cut here ]------------ kernel BUG at fs/ext4/indirect.c:1244! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3590 Comm: syz-executor391 Not tainted 5.17.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ext4_ind_remove_space+0xfde/0x1400 fs/ext4/indirect.c:1244 Code: 00 0f 85 36 03 00 00 48 8b 0b 4c 89 fe 44 8b 4c 24 20 48 8b 7c 24 10 48 83 c1 04 e8 3c bb ff ff e9 02 f6 ff ff e8 c2 26 66 ff <0f> 0b 4c 8b 7c 24 50 e9 8e f9 ff ff e8 b1 26 66 ff 48 8b 7c 24 10 RSP: 0018:ffffc90001adfab8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888021523a00 RSI: ffffffff8212996e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff82128bea R11: 0000000000000000 R12: 0000000000001000 R13: ffffc90001adfb68 R14: ffffc90001adfb88 R15: ffff8880751fa088 FS: 00007f69922ff700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000021605000 CR4: 0000000000350ef0 Call Trace: <TASK> ext4_punch_hole+0xfe8/0x11d0 fs/ext4/inode.c:4044 ext4_fallocate+0x1194/0x3ed0 fs/ext4/extents.c:4694 vfs_fallocate+0x48d/0xe10 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xcf/0x140 fs/open.c:337 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: 0033:0x7f699234cdf9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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:00007f69922ff308 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 0000000000000040 RCX: 00007f699234cdf9 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000005 RBP: 00007f69923d5408 R08: 0000000000000000 R09: 0000000000000000 R10: 00000ffeffeff000 R11: 0000000000000246 R12: 00000ffeffeff000 R13: 00007f69923d5400 R14: 00007f69923a3004 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_ind_remove_space+0xfde/0x1400 fs/ext4/indirect.c:1244 Code: 00 0f 85 36 03 00 00 48 8b 0b 4c 89 fe 44 8b 4c 24 20 48 8b 7c 24 10 48 83 c1 04 e8 3c bb ff ff e9 02 f6 ff ff e8 c2 26 66 ff <0f> 0b 4c 8b 7c 24 50 e9 8e f9 ff ff e8 b1 26 66 ff 48 8b 7c 24 10 RSP: 0018:ffffc90001adfab8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888021523a00 RSI: ffffffff8212996e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff82128bea R11: 0000000000000000 R12: 0000000000001000 R13: ffffc90001adfb68 R14: ffffc90001adfb88 R15: ffff8880751fa088 FS: 00007f69922ff700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000021605000 CR4: 0000000000350ef0
