ci2 starts bisection 2023-07-31 10:47:14.986992894 +0000 UTC m=+68417.904710616 bisecting fixing commit since cffbdd825e02688553e52f59f6dd2978f2357a17 building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit cffbdd825e02688553e52f59f6dd2978f2357a17 testing commit cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bdb5f045577d20938ecc43f96d56dc2270e6593dab17598fc0376592f96ec556 all runs: crashed: general protection fault in path_openat representative crash: general protection fault in path_openat, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ea883a6e6c40e428bb40b1da7f1a6e298f07b57ef411ce7cd39b0637dae7f9c9 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in path_openat representative crash: BUG: unable to handle kernel NULL pointer dereference in path_openat, 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=6520 leaves diff=250 split chunks (needed=false): <250> split chunk #0 of len 250 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 cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 39df4df03eb92f3fce7e488747e5a93a454d35b1331fc5eb2079b317b282765c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in path_openat representative crash: BUG: unable to handle kernel NULL pointer dereference in path_openat, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0226078dca36313365d98378db4aa98e7e77391dde7f74e38334322d3a9e40a1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in path_openat representative crash: BUG: unable to handle kernel NULL pointer dereference in path_openat, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c4110bb9119b0e399022316b2e4cb801afaf6aab98d1c72e42535f07ec54e75c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in path_openat representative crash: BUG: unable to handle kernel NULL pointer dereference in path_openat, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d930e63478acba34a66c952c80ed47123ef06b69ec8a496da79299a349587aa0 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in path_openat representative crash: BUG: unable to handle kernel NULL pointer dereference in path_openat, 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 cffbdd825e02688553e52f59f6dd2978f2357a17 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building cffbdd825e02688553e52f59f6dd2978f2357a17: net/socket.c:1225: undefined reference to `wext_handle_ioctl' net/socket.c:3420: 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_CDC_MBIM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 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 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD d3b37a712ab7a5d73a2c66156debe2e3d48df007 testing commit d3b37a712ab7a5d73a2c66156debe2e3d48df007 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8facf1e73e88599128990dd34b94c0968a13ccfbc6e8c156d461f64f458568d5 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in path_openat representative crash: BUG: unable to handle kernel NULL pointer dereference in path_openat, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h1m53.226986524s (build: 39m0.249650706s, test: 19m26.199041967s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: BACKPORT: FROMGIT: irqchip/gic-v3: Workaround for GIC-700 erratum 2941627 crash: BUG: unable to handle kernel NULL pointer dereference in path_openat BUG: kernel NULL pointer dereference, address: 0000000000000006 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 112cd2067 P4D 112cd2067 PUD 112db6067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 352 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:atomic_open fs/namei.c:3292 [inline] RIP: 0010:lookup_open fs/namei.c:3384 [inline] RIP: 0010:open_last_lookups fs/namei.c:3481 [inline] RIP: 0010:path_openat+0x552/0xb60 fs/namei.c:3711 Code: 8b 40 18 75 37 48 83 f8 ff 8b 4d b4 0f 84 6f 01 00 00 48 85 c0 74 13 4c 89 f7 e8 59 d2 00 00 8b 4d b4 48 8b 45 a8 4c 8b 70 18 <41> f6 46 02 70 75 17 41 bd fe ff ff ff e9 95 fe ff ff 4c 39 f0 8b RSP: 0018:ffffc9000075fcc0 EFLAGS: 00010246 RAX: ffff88810bf093c0 RBX: 0000000000008000 RCX: 0000000000000000 RDX: 0000000300000000 RSI: 0000000000000000 RDI: ffff888108b1b900 RBP: ffffc9000075fd58 R08: 00000000ffffff9c R09: ffffc9000075fc38 R10: ffff888112cefc00 R11: ffff888100041400 R12: ffffc9000075fe98 R13: 0000000000000000 R14: 0000000000000004 R15: ffffc9000075fd68 FS: 00007fa56f87f6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000006 CR3: 0000000112d06000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0xad/0x150 fs/namei.c:3741 do_sys_openat2+0x8e/0x240 fs/open.c:1333 do_sys_open fs/open.c:1349 [inline] __do_sys_openat fs/open.c:1365 [inline] __se_sys_openat fs/open.c:1360 [inline] __x64_sys_openat+0x79/0xa0 fs/open.c:1360 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa56ea7c959 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:00007fa56f87f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa56eb9c050 RCX: 00007fa56ea7c959 RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007fa56ead8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fa56eb9c050 R15: 00007ffca9044798 Modules linked in: CR2: 0000000000000006 ---[ end trace 0000000000000000 ]--- RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:atomic_open fs/namei.c:3292 [inline] RIP: 0010:lookup_open fs/namei.c:3384 [inline] RIP: 0010:open_last_lookups fs/namei.c:3481 [inline] RIP: 0010:path_openat+0x552/0xb60 fs/namei.c:3711 Code: 8b 40 18 75 37 48 83 f8 ff 8b 4d b4 0f 84 6f 01 00 00 48 85 c0 74 13 4c 89 f7 e8 59 d2 00 00 8b 4d b4 48 8b 45 a8 4c 8b 70 18 <41> f6 46 02 70 75 17 41 bd fe ff ff ff e9 95 fe ff ff 4c 39 f0 8b RSP: 0018:ffffc9000075fcc0 EFLAGS: 00010246 RAX: ffff88810bf093c0 RBX: 0000000000008000 RCX: 0000000000000000 RDX: 0000000300000000 RSI: 0000000000000000 RDI: ffff888108b1b900 RBP: ffffc9000075fd58 R08: 00000000ffffff9c R09: ffffc9000075fc38 R10: ffff888112cefc00 R11: ffff888100041400 R12: ffffc9000075fe98 R13: 0000000000000000 R14: 0000000000000004 R15: ffffc9000075fd68 FS: 00007fa56f87f6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000006 CR3: 0000000112d06000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 40 18 mov 0x18(%rax),%eax 3: 75 37 jne 0x3c 5: 48 83 f8 ff cmp $0xffffffffffffffff,%rax 9: 8b 4d b4 mov -0x4c(%rbp),%ecx c: 0f 84 6f 01 00 00 je 0x181 12: 48 85 c0 test %rax,%rax 15: 74 13 je 0x2a 17: 4c 89 f7 mov %r14,%rdi 1a: e8 59 d2 00 00 call 0xd278 1f: 8b 4d b4 mov -0x4c(%rbp),%ecx 22: 48 8b 45 a8 mov -0x58(%rbp),%rax 26: 4c 8b 70 18 mov 0x18(%rax),%r14 * 2a: 41 f6 46 02 70 testb $0x70,0x2(%r14) <-- trapping instruction 2f: 75 17 jne 0x48 31: 41 bd fe ff ff ff mov $0xfffffffe,%r13d 37: e9 95 fe ff ff jmp 0xfffffed1 3c: 4c 39 f0 cmp %r14,%rax 3f: 8b .byte 0x8b