ci2 starts bisection 2024-02-03 08:17:26.785272681 +0000 UTC m=+60956.388101973 bisecting fixing commit since ea586874d2f9e501ef84b7e55036fc8965397d5d building syzkaller on 0b6a67ac4b0dc26f43030c5edd01c9175f13b784 ensuring issue is reproducible on original commit ea586874d2f9e501ef84b7e55036fc8965397d5d testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 11451658254d7622647772fa6886e75e0599f9c15484e2e3531ac43235c2244c all runs: crashed: general protection fault in do_renameat2 representative crash: general protection fault in do_renameat2, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ee8f977972a571032937175f2913ba49966ea92f651f22959f12ec46704c1a2f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 representative crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=4920 full=6163 leaves diff=241 split chunks (needed=false): <241> split chunk #0 of len 241 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 795603893f47fd4742740fdaf2d20af42328434ab3bfa9e700883024bd2daeb2 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 representative crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fb1ff84d0bb73abd9e43fcc84ff5356d656c16774a70917d1e5c6d6f93962ea1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 representative crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 03dd0b670201936aa8271f6c38a57e68cfb63184723b587809f51affdd25b650 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 representative crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c995b6b0210c1f12e8a5fcebf7735693a5d4f1bdeb45f15d5d3378682ded021d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 representative crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ea586874d2f9e501ef84b7e55036fc8965397d5d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building ea586874d2f9e501ef84b7e55036fc8965397d5d: net/socket.c:1172: undefined reference to `wext_handle_ioctl' net/socket.c:3366: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:343: undefined reference to `wext_proc_exit' net/core/net-procfs.c:327: undefined reference to `wext_proc_init' minimized to 45 configs; suspects: [HID_ZEROPLUS USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL USB_SERIAL_FTDI_SIO USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS X86_X32 ZEROPLUS_FF] disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD 1c3a1f32bcbdc0591d0eab67b745f1f4d3ecef6b testing commit 1c3a1f32bcbdc0591d0eab67b745f1f4d3ecef6b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ae1ac7e4b057486da19e3397b4e6b12894e5bf0fbbf35e24f782f74fb98df831 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 representative crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 32m43.727189884s (build: 12m14.649643879s, test: 18m47.56400514s) crash still not fixed or there were kernel test errors commit msg: Revert "ipv6: remove max_size check inline with ipv4" crash: BUG: unable to handle kernel NULL pointer dereference in do_renameat2 BUG: kernel NULL pointer dereference, address: 0000000000000010 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1013fb067 P4D 1013fb067 PUD 101fcc067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 351 Comm: syz-executor.0 Not tainted 5.15.147-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:do_renameat2+0x2a5/0x590 fs/namei.c:4919 Code: 49 89 c4 48 8b b5 58 ff ff ff 48 8d bd 70 ff ff ff 89 da e8 ad 80 ff ff 48 3d 00 f0 ff ff 49 89 c6 41 89 c7 0f 87 22 01 00 00 00 00 00 70 00 41 bf fe ff ff ff 0f 84 08 01 00 00 8b 95 30 ff RSP: 0018:ffffc90000363e20 EFLAGS: 00010203 RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000500000000 RDX: 0000000000000004 RSI: 0000000400000000 RDI: ffff8881023adc80 RBP: ffffc90000363f10 R08: 0000000000000005 R09: 0000000000000064 R10: ffff8881015aa140 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881002c5000 R14: 0000000000000010 R15: 0000000000000010 FS: 00007f367f29b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 00000001011ee000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rename fs/namei.c:5017 [inline] __se_sys_rename fs/namei.c:5015 [inline] __x64_sys_rename+0x40/0x50 fs/namei.c:5015 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+0x61/0xcb RIP: 0033:0x7f367f718ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f367f29b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f367f837f80 RCX: 00007f367f718ae9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100 RBP: 00007f367f76447a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f367f837f80 R15: 00007ffef140ef08 Modules linked in: CR2: 0000000000000010 ---[ end trace 3539664b98db55eb ]--- RIP: 0010:do_renameat2+0x2a5/0x590 fs/namei.c:4919 Code: 49 89 c4 48 8b b5 58 ff ff ff 48 8d bd 70 ff ff ff 89 da e8 ad 80 ff ff 48 3d 00 f0 ff ff 49 89 c6 41 89 c7 0f 87 22 01 00 00 00 00 00 70 00 41 bf fe ff ff ff 0f 84 08 01 00 00 8b 95 30 ff RSP: 0018:ffffc90000363e20 EFLAGS: 00010203 RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000500000000 RDX: 0000000000000004 RSI: 0000000400000000 RDI: ffff8881023adc80 RBP: ffffc90000363f10 R08: 0000000000000005 R09: 0000000000000064 R10: ffff8881015aa140 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881002c5000 R14: 0000000000000010 R15: 0000000000000010 FS: 00007f367f29b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 00000001011ee000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 89 c4 mov %rax,%r12 3: 48 8b b5 58 ff ff ff mov -0xa8(%rbp),%rsi a: 48 8d bd 70 ff ff ff lea -0x90(%rbp),%rdi 11: 89 da mov %ebx,%edx 13: e8 ad 80 ff ff call 0xffff80c5 18: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 1e: 49 89 c6 mov %rax,%r14 21: 41 89 c7 mov %eax,%r15d 24: 0f 87 22 01 00 00 ja 0x14c * 2a: f7 00 00 00 70 00 testl $0x700000,(%rax) <-- trapping instruction 30: 41 bf fe ff ff ff mov $0xfffffffe,%r15d 36: 0f 84 08 01 00 00 je 0x144 3c: 8b .byte 0x8b 3d: 95 xchg %eax,%ebp 3e: 30 ff xor %bh,%bh