ci2 starts bisection 2024-01-26 13:14:17.976480293 +0000 UTC m=+66211.850674073 bisecting fixing commit since a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 building syzkaller on ebcad15ccd9a570d2e16081b7b07b288462b7b91 ensuring issue is reproducible on original commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 testing commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6cfc461cff3eb6ce2f2cce31002e4096ce528902d90f21468b5cb1db6df5154d all runs: crashed: general protection fault in skb_segment representative crash: general protection fault in skb_segment, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 78efc11cadad9e8fe9764a9e2880452274df2d8041bba244034774d3c587bf8f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in skb_segment representative crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=5179 full=6490 leaves diff=254 split chunks (needed=false): <254> split chunk #0 of len 254 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 591ac4b624211b938fd139edeb0a259c94b7c609b82ffdfc1ae518d26f5cf542 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in skb_segment representative crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3ebe3e145c3bf97373e9f8abe210b5a6dbfe431b097fcb556368d0e773e5f21a all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in skb_segment representative crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a43a57d06ab15fedc01279163c83c294cd5b31edd0dad36fea5b4a538e584e09 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in skb_segment representative crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fe6373344c0eee1bf9d8ac6704340606721254dfbdd51f6120f4c5b55d832937 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in skb_segment representative crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment, 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 a9567a35d0b87f17387ee2a86f6092aa6c1c85d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building a9567a35d0b87f17387ee2a86f6092aa6c1c85d0: net/socket.c:1242: undefined reference to `wext_handle_ioctl' net/socket.c:3437: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:329: undefined reference to `wext_proc_init' net/core/net-procfs.c:345: undefined reference to `wext_proc_exit' minimized to 50 configs; suspects: [HID_ZEROPLUS USB_NET_GL620A 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_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 V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF] disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD 4f668f5682f87744f661cfc896454432c07a4aa4 testing commit 4f668f5682f87744f661cfc896454432c07a4aa4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e636b4f2de9f3957400247658194e8dc592dc6e3da28bdd1cc6862a7fa204937 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in skb_segment representative crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 39m42.723129402s (build: 17m30.733687755s, test: 19m36.181167263s) crash still not fixed or there were kernel test errors commit msg: BACKPORT: irqchip/gic-v3: Work around affinity issues on ASR8601 crash: BUG: unable to handle kernel NULL pointer dereference in skb_segment BUG: kernel NULL pointer dereference, address: 0000000000000070 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10b9dc067 P4D 10b9dc067 PUD 10cedb067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 361 Comm: syz-executor.0 Not tainted 6.1.68-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:skb_segment+0xc00/0xea0 net/core/skbuff.c:4242 Code: 00 00 00 44 01 e8 66 41 89 44 24 54 8b 75 a4 4c 8b 45 90 4c 8b 8d 60 ff ff ff 44 8b 55 ac 4c 8b 9d 70 ff ff ff e9 04 f7 ff ff <41> 8b 7e 70 44 8b 6b 70 e9 2a f7 ff ff 48 8b 75 b0 4c 89 66 08 8b RSP: 0018:ffffc900007cf9a8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88810bbb0400 RCX: 0000000000000280 RDX: 0000000000000000 RSI: 000000000000ffff RDI: ffff88810bbb0400 RBP: ffffc900007cfaa0 R08: 000000000000003e R09: 0000000000000f0f R10: 0000000000000011 R11: ffff888112c9fec8 R12: 0000000000000000 R13: 000000000000003e R14: 0000000000000000 R15: 0000000000000046 FS: 00007f68a0c976c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000070 CR3: 000000010e75a000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udp6_ufo_fragment+0x23c/0x2b0 net/ipv6/udp_offload.c:108 ipv6_gso_segment+0x16a/0x490 net/ipv6/ip6_offload.c:138 skb_mac_gso_segment+0x9c/0x130 net/core/gro.c:141 __skb_gso_segment+0xd8/0x130 net/core/dev.c:3454 skb_gso_segment include/linux/netdevice.h:4852 [inline] validate_xmit_skb+0xc4/0x370 net/core/dev.c:3712 __dev_queue_xmit+0x587/0xd70 net/core/dev.c:4289 dev_queue_xmit+0xb/0x10 include/linux/netdevice.h:3076 packet_snd net/packet/af_packet.c:3077 [inline] packet_sendmsg+0x11e0/0x1630 net/packet/af_packet.c:3108 sock_sendmsg_nosec net/socket.c:716 [inline] __sock_sendmsg net/socket.c:728 [inline] __sys_sendto+0x2e4/0x360 net/socket.c:2134 __do_sys_sendto net/socket.c:2146 [inline] __se_sys_sendto net/socket.c:2142 [inline] __x64_sys_sendto+0x21/0x30 net/socket.c:2142 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f689fe7cba9 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:00007f68a0c970c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f689ff9bf80 RCX: 00007f689fe7cba9 RDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f689fec847a R08: 0000000020000540 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f689ff9bf80 R15: 00007ffe2190d5e8 Modules linked in: CR2: 0000000000000070 ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_segment+0xc00/0xea0 net/core/skbuff.c:4242 Code: 00 00 00 44 01 e8 66 41 89 44 24 54 8b 75 a4 4c 8b 45 90 4c 8b 8d 60 ff ff ff 44 8b 55 ac 4c 8b 9d 70 ff ff ff e9 04 f7 ff ff <41> 8b 7e 70 44 8b 6b 70 e9 2a f7 ff ff 48 8b 75 b0 4c 89 66 08 8b RSP: 0018:ffffc900007cf9a8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88810bbb0400 RCX: 0000000000000280 RDX: 0000000000000000 RSI: 000000000000ffff RDI: ffff88810bbb0400 RBP: ffffc900007cfaa0 R08: 000000000000003e R09: 0000000000000f0f R10: 0000000000000011 R11: ffff888112c9fec8 R12: 0000000000000000 R13: 000000000000003e R14: 0000000000000000 R15: 0000000000000046 FS: 00007f68a0c976c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000070 CR3: 000000010e75a000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 44 01 e8 add %al,-0x18(%rcx,%rax,1) 6: 66 41 89 44 24 54 mov %ax,0x54(%r12) c: 8b 75 a4 mov -0x5c(%rbp),%esi f: 4c 8b 45 90 mov -0x70(%rbp),%r8 13: 4c 8b 8d 60 ff ff ff mov -0xa0(%rbp),%r9 1a: 44 8b 55 ac mov -0x54(%rbp),%r10d 1e: 4c 8b 9d 70 ff ff ff mov -0x90(%rbp),%r11 25: e9 04 f7 ff ff jmp 0xfffff72e * 2a: 41 8b 7e 70 mov 0x70(%r14),%edi <-- trapping instruction 2e: 44 8b 6b 70 mov 0x70(%rbx),%r13d 32: e9 2a f7 ff ff jmp 0xfffff761 37: 48 8b 75 b0 mov -0x50(%rbp),%rsi 3b: 4c 89 66 08 mov %r12,0x8(%rsi) 3f: 8b .byte 0x8b