general protection fault, probably for non-canonical address 0xdffffc0004000010: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000020000080-0x0000000020000087] CPU: 0 PID: 4197 Comm: syz-executor.0 Not tainted 6.3.0-rc3-next-20230327 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:do_iter_write+0x477/0x700 Code: 00 0f 85 fd 01 00 00 4d 8b 7c 24 28 e8 d2 05 c6 ff 48 8b 44 24 18 80 38 00 0f 85 68 01 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3b 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00 RSP: 0018:ffff88804350fc68 EFLAGS: 00010212 RAX: 0000000020000080 RBX: ffff88804350fd58 RCX: ffffc90002bd9000 RDX: 0000000004000010 RSI: ffffffff8185830e RDI: 0000000000000007 RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880101c1680 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84921ba0 FS: 00007fb591a1d700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c221000 CR3: 0000000019ea4000 CR4: 0000000000350ef0 Call Trace: vfs_writev+0x1ae/0x660 do_writev+0x133/0x300 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb5944a7b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb591a1d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007fb5945baf60 RCX: 00007fb5944a7b19 RDX: 0000000000000001 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00007fb594501f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbc7abc7f R14: 00007fb591a1d300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_iter_write+0x477/0x700 Code: 00 0f 85 fd 01 00 00 4d 8b 7c 24 28 e8 d2 05 c6 ff 48 8b 44 24 18 80 38 00 0f 85 68 01 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3b 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00 RSP: 0018:ffff88804350fc68 EFLAGS: 00010212 RAX: 0000000020000080 RBX: ffff88804350fd58 RCX: ffffc90002bd9000 RDX: 0000000004000010 RSI: ffffffff8185830e RDI: 0000000000000007 RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880101c1680 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84921ba0 FS: 00007fb591a1d700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c221000 CR3: 0000000019ea4000 CR4: 0000000000350ef0 loop3: detected capacity change from 0 to 8 tmpfs: Unknown parameter 'ô·GAs' lo: entered promiscuous mode lo: entered allmulticast mode loop3: detected capacity change from 0 to 8 tmpfs: Unknown parameter 'ô·GAs' lo: left promiscuous mode lo: left allmulticast mode lo: entered promiscuous mode lo: entered allmulticast mode loop3: detected capacity change from 0 to 8 tmpfs: Unknown parameter 'ô·GAs' lo: left promiscuous mode lo: left allmulticast mode lo: entered promiscuous mode lo: entered allmulticast mode loop3: detected capacity change from 0 to 8 tmpfs: Unknown parameter 'ô·GAs' lo: left promiscuous mode lo: left allmulticast mode lo: entered promiscuous mode lo: entered allmulticast mode Bluetooth: hci3: command 0x0401 tx timeout Bluetooth: hci3: command 0x0401 tx timeout warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. tmpfs: Bad value for 'gid' process 'syz-executor.6' launched '/dev/fd/-1/./file0' with NULL argv: empty string added tmpfs: Bad value for 'gid' tmpfs: Bad value for 'gid' tmpfs: Bad value for 'gid' tmpfs: Bad value for 'gid' ---------------- Code disassembly (best guess): 0: 00 0f add %cl,(%rdi) 2: 85 fd test %edi,%ebp 4: 01 00 add %eax,(%rax) 6: 00 4d 8b add %cl,-0x75(%rbp) 9: 7c 24 jl 0x2f b: 28 e8 sub %ch,%al d: d2 05 c6 ff 48 8b rolb %cl,-0x74b7003a(%rip) # 0x8b48ffd9 13: 44 24 18 rex.R and $0x18,%al 16: 80 38 00 cmpb $0x0,(%rax) 19: 0f 85 68 01 00 00 jne 0x187 1f: 48 8b 43 18 mov 0x18(%rbx),%rax 23: 48 89 c2 mov %rax,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 42 80 3c 32 00 cmpb $0x0,(%rdx,%r14,1) <-- trapping instruction 2f: 0f 85 3b 01 00 00 jne 0x170 35: 48 8b 4c 24 20 mov 0x20(%rsp),%rcx 3a: 48 8b 30 mov (%rax),%rsi 3d: 80 39 00 cmpb $0x0,(%rcx)