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:00007f71f59e6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f71f4dac120 RCX: 00007f71f4c8c169 RDX: 0000000020000240 RSI: 0000000040806685 RDI: 0000000000000008 RBP: 00007f71f59e61d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd1881688f R14: 00007f71f59e6300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 0 PID: 15043 Comm: syz-executor.1 Not tainted 6.3.0-rc6-next-20230414-syzkaller-12018-gd3f2cd248191 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 RIP: 0010:folio_get_private include/linux/mm_types.h:419 [inline] RIP: 0010:__ext4_block_zero_page_range fs/ext4/inode.c:3685 [inline] RIP: 0010:ext4_block_zero_page_range+0x229/0x9a0 fs/ext4/inode.c:3784 Code: 58 ff 83 fb 3f 0f 87 a3 d1 d4 07 e8 c1 2c 58 ff 89 d9 48 b8 00 00 00 00 00 fc ff df 49 8d 5e 28 49 d3 e5 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 06 00 00 49 8b 6e 28 48 85 ed 0f 84 e5 05 00 RSP: 0018:ffffc90015497858 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 000000000000001c RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff822b49cf RDI: 0000000000000005 RBP: ffff888081d972d8 R08: 0000000000000005 R09: 000000000000003f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000008 R14: fffffffffffffff4 R15: ffff888081d970b0 FS: 00007f71f59e6700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33628000 CR3: 00000000568f2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_block_truncate_page fs/ext4/inode.c:3808 [inline] ext4_truncate+0xf28/0x1340 fs/ext4/inode.c:4185 ext4_begin_enable_verity+0x1f5/0x3d0 fs/ext4/verity.c:143 enable_verity+0x636/0x9d0 fs/verity/enable.c:245 fsverity_ioctl_enable+0x404/0x560 fs/verity/enable.c:385 __ext4_ioctl+0x23d2/0x4b00 fs/ext4/ioctl.c:1574 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f71f4c8c169 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:00007f71f59e6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f71f4dac120 RCX: 00007f71f4c8c169 RDX: 0000000020000240 RSI: 0000000040806685 RDI: 0000000000000008 RBP: 00007f71f59e61d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd1881688f R14: 00007f71f59e6300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_get_private include/linux/mm_types.h:419 [inline] RIP: 0010:__ext4_block_zero_page_range fs/ext4/inode.c:3685 [inline] RIP: 0010:ext4_block_zero_page_range+0x229/0x9a0 fs/ext4/inode.c:3784 Code: 58 ff 83 fb 3f 0f 87 a3 d1 d4 07 e8 c1 2c 58 ff 89 d9 48 b8 00 00 00 00 00 fc ff df 49 8d 5e 28 49 d3 e5 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 06 00 00 49 8b 6e 28 48 85 ed 0f 84 e5 05 00 RSP: 0018:ffffc90015497858 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 000000000000001c RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff822b49cf RDI: 0000000000000005 RBP: ffff888081d972d8 R08: 0000000000000005 R09: 000000000000003f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000008 R14: fffffffffffffff4 R15: ffff888081d970b0 FS: 00007f71f59e6700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33628000 CR3: 00000000568f2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 28 00 sub %al,(%rax) 2: 00 00 add %al,(%rax) 4: 75 05 jne 0xb 6: 48 83 c4 28 add $0x28,%rsp a: c3 retq b: e8 f1 19 00 00 callq 0x1a01 10: 90 nop 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall * 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 retq 33: 48 c7 c1 b8 ff ff ff mov $0xffffffffffffffb8,%rcx 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W