ci2 starts bisection 2023-08-06 05:58:51.70343295 +0000 UTC m=+63302.355295961 bisecting fixing commit since 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 testing commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce68f8599abed565fd5d12890405544674d4436b768594d18f5e441275fc4e2f 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 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d6d8a84d51d622a2ebcc40d08437bbbc10588a4a4fccf4e03ee7ac4447e4126 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=4789 full=6024 leaves diff=237 split chunks (needed=false): <237> split chunk #0 of len 237 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0635727284e552917637df1af5f94224ad8e26286dfbdb9be8cc9272bb97a641 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fa31bebc90690249e3f2d0ba82c212d18716483682cf4be33ac4df539b364db6 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 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e52947cfbb967502ae83c83fcf0a582144b71a8bfd4ed15ddd224ad0d3393de7 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b9e0d8cc2ecaf9ba5bc14e760421f2aa13e1c599ccf86de6e15ac32fcb648265 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 43c801dc3325b9f07f8869e95ad87b05a9f21eb6: net/socket.c:1109: undefined reference to `wext_handle_ioctl' net/socket.c:3378: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346: undefined reference to `wext_proc_exit' net/core/net-procfs.c:330: 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 [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing current HEAD 8a427269c016a4b7a6c29a595f3c121030649818 testing commit 8a427269c016a4b7a6c29a595f3c121030649818 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b551ba2d8327af37b672cac5d3c573b5f767ea2d9f2b462c53a982685ffc407a 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: 1h19m37.189947851s (build: 55m17.024295209s, test: 20m58.703259122s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge branch 'android13-5.10' into branch 'android13-5.10-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 10a938067 P4D 10a938067 PUD 10fc18067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 347 Comm: syz-executor.0 Not tainted 5.10.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:atomic_open fs/namei.c:3136 [inline] RIP: 0010:lookup_open fs/namei.c:3225 [inline] RIP: 0010:open_last_lookups fs/namei.c:3323 [inline] RIP: 0010:path_openat+0xc7b/0x10d0 fs/namei.c:3512 Code: 48 85 d2 74 25 4c 89 f7 44 89 8d 78 ff ff ff 88 45 80 e8 98 c3 00 00 48 8b 45 98 44 8b 8d 78 ff ff ff 4c 8b 70 18 0f b6 45 80 <41> f7 06 00 00 70 00 0f 84 22 01 00 00 49 83 fe fe 0f 94 c2 21 d0 RSP: 0018:ffffc90000597cd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888108fe19c0 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff88810951ca00 RBP: ffffc90000597d70 R08: 0000000000000004 R09: 0000000000000000 R10: ffff8881013b3080 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000597d80 R14: 0000000000000004 R15: ffffc90000597ebc FS: 00007fe8905c16c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 000000010a97b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0x9d/0x140 fs/namei.c:3542 do_sys_openat2+0x9c/0x210 fs/open.c:1217 do_sys_open fs/open.c:1233 [inline] __do_sys_openat fs/open.c:1249 [inline] __se_sys_openat fs/open.c:1244 [inline] __x64_sys_openat+0x51/0x90 fs/open.c:1244 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fe890a5f959 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:00007fe8905c10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fe890b7f050 RCX: 00007fe890a5f959 RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007fe890abbc88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fe890b7f050 R15: 00007ffe4094c4f8 Modules linked in: CR2: 0000000000000004 ---[ end trace d97241d8fa5c1cad ]--- RIP: 0010:atomic_open fs/namei.c:3136 [inline] RIP: 0010:lookup_open fs/namei.c:3225 [inline] RIP: 0010:open_last_lookups fs/namei.c:3323 [inline] RIP: 0010:path_openat+0xc7b/0x10d0 fs/namei.c:3512 Code: 48 85 d2 74 25 4c 89 f7 44 89 8d 78 ff ff ff 88 45 80 e8 98 c3 00 00 48 8b 45 98 44 8b 8d 78 ff ff ff 4c 8b 70 18 0f b6 45 80 <41> f7 06 00 00 70 00 0f 84 22 01 00 00 49 83 fe fe 0f 94 c2 21 d0 RSP: 0018:ffffc90000597cd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888108fe19c0 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff88810951ca00 RBP: ffffc90000597d70 R08: 0000000000000004 R09: 0000000000000000 R10: ffff8881013b3080 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000597d80 R14: 0000000000000004 R15: ffffc90000597ebc FS: 00007fe8905c16c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 000000010a97b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 85 d2 test %rdx,%rdx 3: 74 25 je 0x2a 5: 4c 89 f7 mov %r14,%rdi 8: 44 89 8d 78 ff ff ff mov %r9d,-0x88(%rbp) f: 88 45 80 mov %al,-0x80(%rbp) 12: e8 98 c3 00 00 call 0xc3af 17: 48 8b 45 98 mov -0x68(%rbp),%rax 1b: 44 8b 8d 78 ff ff ff mov -0x88(%rbp),%r9d 22: 4c 8b 70 18 mov 0x18(%rax),%r14 26: 0f b6 45 80 movzbl -0x80(%rbp),%eax * 2a: 41 f7 06 00 00 70 00 testl $0x700000,(%r14) <-- trapping instruction 31: 0f 84 22 01 00 00 je 0x159 37: 49 83 fe fe cmp $0xfffffffffffffffe,%r14 3b: 0f 94 c2 sete %dl 3e: 21 d0 and %edx,%eax