ci2 starts bisection 2023-08-13 03:01:17.398072564 +0000 UTC m=+130371.096641507 bisecting fixing commit since 19c0ed55a470d1cd766484abab04871b648560fb building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit 19c0ed55a470d1cd766484abab04871b648560fb testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: be2d420345167a2e19d22b0f4080fb5c4e2cf6e71ce580bbc9b7c9a027b5e403 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6712f14ce77c59d50d63de78f3edf872a175f94a6f3e182fd44b78f7fbfd4b9e 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4920 full=6166 leaves diff=244 split chunks (needed=false): <244> split chunk #0 of len 244 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 337316ecac2c6e3221e994521a30be6a8f6af5b4717513354b5d5de231b8ad31 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a6cdebf4d70ea1ce5d344eb67d849cbbb3c4535491ef77df7544d4a37d0279af 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e4ec437f94f039de5573e046af1d54b799ce3db2fba27d59e0be6d13d7812ce8 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 [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aee61d3f11ecbe32fb3be0dceb6f5b20937785aa6fb3cb416640176841314c3c 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 19c0ed55a470d1cd766484abab04871b648560fb: 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 48 configs; suspects: [HID_ZEROPLUS 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 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD 1463976ddc64e81b31046e7a2a09007263f54f10 testing commit 1463976ddc64e81b31046e7a2a09007263f54f10 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bb0eb02ce679d3e0bf75371269333b6ed06e3970b742ac97d8cbd0607cad313d 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: 59m15.513940488s (build: 35m23.799005544s, test: 20m40.625627654s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge 5.15.122 into android13-5.15-lts crash: BUG: unable to handle kernel NULL pointer dereference in path_openat BUG: kernel NULL pointer dereference, address: 0000000000000004 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1140a0067 P4D 1140a0067 PUD 1140a4067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 372 Comm: syz-executor.0 Not tainted 5.15.122-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:atomic_open fs/namei.c:3271 [inline] RIP: 0010:lookup_open fs/namei.c:3363 [inline] RIP: 0010:open_last_lookups fs/namei.c:3462 [inline] RIP: 0010:path_openat+0xd96/0x1230 fs/namei.c:3669 Code: e4 0f 95 c2 48 83 f8 ff 0f 84 cd 03 00 00 48 85 c0 74 17 4c 89 f7 88 55 88 e8 a6 c7 00 00 48 8b 45 98 0f b6 55 88 4c 8b 70 18 <41> f7 06 00 00 70 00 0f 84 13 01 00 00 49 83 fe fe 0f 94 c0 21 c2 RSP: 0018:ffffc900003ebcc8 EFLAGS: 00010246 RAX: ffff8881027f6dc0 RBX: ffff88810b584dd0 RCX: 0000000400000000 RDX: 0000000000000000 RSI: 0000000300000000 RDI: ffff888101de9280 RBP: ffffc900003ebd70 R08: 0000000000000004 R09: 0000000000000064 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffc900003ebd80 R14: 0000000000000004 R15: ffffc900003ebebc FS: 00007f6ea54176c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000114092000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0xb1/0x150 fs/namei.c:3699 do_sys_openat2+0x9c/0x250 fs/open.c:1234 do_sys_open fs/open.c:1250 [inline] __do_sys_openat fs/open.c:1266 [inline] __se_sys_openat fs/open.c:1261 [inline] __x64_sys_openat+0x51/0x90 fs/open.c:1261 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: 0033:0x7f6ea58b5959 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:00007f6ea54170c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f6ea59d5050 RCX: 00007f6ea58b5959 RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f6ea5911c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f6ea59d5050 R15: 00007fff31d46688 Modules linked in: CR2: 0000000000000004 ---[ end trace 55ec8abcf98f33ce ]--- RIP: 0010:atomic_open fs/namei.c:3271 [inline] RIP: 0010:lookup_open fs/namei.c:3363 [inline] RIP: 0010:open_last_lookups fs/namei.c:3462 [inline] RIP: 0010:path_openat+0xd96/0x1230 fs/namei.c:3669 Code: e4 0f 95 c2 48 83 f8 ff 0f 84 cd 03 00 00 48 85 c0 74 17 4c 89 f7 88 55 88 e8 a6 c7 00 00 48 8b 45 98 0f b6 55 88 4c 8b 70 18 <41> f7 06 00 00 70 00 0f 84 13 01 00 00 49 83 fe fe 0f 94 c0 21 c2 RSP: 0018:ffffc900003ebcc8 EFLAGS: 00010246 RAX: ffff8881027f6dc0 RBX: ffff88810b584dd0 RCX: 0000000400000000 RDX: 0000000000000000 RSI: 0000000300000000 RDI: ffff888101de9280 RBP: ffffc900003ebd70 R08: 0000000000000004 R09: 0000000000000064 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffc900003ebd80 R14: 0000000000000004 R15: ffffc900003ebebc FS: 00007f6ea54176c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000114092000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e4 0f in $0xf,%al 2: 95 xchg %eax,%ebp 3: c2 48 83 ret $0x8348 6: f8 clc 7: ff 0f decl (%rdi) 9: 84 cd test %cl,%ch b: 03 00 add (%rax),%eax d: 00 48 85 add %cl,-0x7b(%rax) 10: c0 74 17 4c 89 shlb $0x89,0x4c(%rdi,%rdx,1) 15: f7 88 55 88 e8 a6 c7 testl $0x480000c7,-0x591777ab(%rax) 1c: 00 00 48 1f: 8b 45 98 mov -0x68(%rbp),%eax 22: 0f b6 55 88 movzbl -0x78(%rbp),%edx 26: 4c 8b 70 18 mov 0x18(%rax),%r14 * 2a: 41 f7 06 00 00 70 00 testl $0x700000,(%r14) <-- trapping instruction 31: 0f 84 13 01 00 00 je 0x14a 37: 49 83 fe fe cmp $0xfffffffffffffffe,%r14 3b: 0f 94 c0 sete %al 3e: 21 c2 and %eax,%edx