ci2 starts bisection 2025-03-12 16:40:35.613830273 +0000 UTC m=+59577.097950707 bisecting fixing commit since e5e5644ea27f86a29c84df744a01ea7de65ef800 building syzkaller on 084d817847fa603dabdd081770a757e9c41f1ae7 ensuring issue is reproducible on original commit e5e5644ea27f86a29c84df744a01ea7de65ef800 testing commit e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0de287cda53e2dd148e3c817c4227c02b2fcf405d7cced051e5867d017999a0 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 e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6017cf7f3c4c10d87a33c9f46d4ebe85f0a9f66b837ff6e87a570d1e1b6e4ade 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=6020 leaves diff=243 split chunks (needed=false): <243> split chunk #0 of len 243 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 e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f18098f891c76484e9aa0d9232a5a1bffbf4eb2027ee738ed61663ba7128f5d8 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 e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82931a256c6ac392b8ddc31c6c7d1b9d4083b7b10a4ec0d40e288a490291ddff 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 e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ffa44f62bbadc896d97f7b50eff2eb2c97cb644586ac16f3caf6ee550513f5e7 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 e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1cf249d60e514112fe2ab9afa4d59c46f4851ead5ef6c74be37e6997c8987bb9 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 e5e5644ea27f86a29c84df744a01ea7de65ef800 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building e5e5644ea27f86a29c84df744a01ea7de65ef800: net/socket.c:1128: undefined reference to `wext_handle_ioctl' net/socket.c:3397: 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 47 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 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 USB_XHCI_PCI_RENESAS 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 3f5f2283d6843bde6658e93fc50f5f00e5bd3595 testing commit 3f5f2283d6843bde6658e93fc50f5f00e5bd3595 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bcabf7cf55fcaa380fd5631fd5ca7c2015cf8f844aecd76e46f8f1794ec737af 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: 2h43m55.062659426s (build: 1h57m5.394033276s, test: 44m41.230773249s) crash still not fixed or there were kernel test errors commit msg: Merge branch 'android13-5.10' into android13-5.10-lts crash: BUG: unable to handle kernel NULL pointer dereference in path_openat BUG: kernel NULL pointer dereference, address: 0000000000000017 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 116f31067 P4D 116f31067 PUD 116f35067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 477 Comm: syz.0.15 Not tainted 5.10.234-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:atomic_open fs/namei.c:3130 [inline] RIP: 0010:lookup_open fs/namei.c:3219 [inline] RIP: 0010:open_last_lookups fs/namei.c:3317 [inline] RIP: 0010:path_openat+0xc7b/0x10d0 fs/namei.c:3506 Code: 48 85 d2 74 25 4c 89 f7 44 89 8d 78 ff ff ff 88 45 80 e8 98 c4 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:ffffc90000753cd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8881004764e0 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff888111363780 RBP: ffffc90000753d70 R08: 0000000000000004 R09: 0000000000000000 R10: ffff8881164e0c80 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000753d80 R14: 0000000000000017 R15: ffffc90000753ebc FS: 00007fb33a18c6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000017 CR3: 0000000116f22000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0x9d/0x140 fs/namei.c:3536 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+0x61/0xcb RIP: 0033:0x7fb33a72bff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb33a18c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb33a8e4058 RCX: 00007fb33a72bff9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007fb33a79e296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb33a8e4058 R15: 00007ffc8a3a40f8 Modules linked in: CR2: 0000000000000017 ---[ end trace 4774fe15d44c1f72 ]--- RIP: 0010:atomic_open fs/namei.c:3130 [inline] RIP: 0010:lookup_open fs/namei.c:3219 [inline] RIP: 0010:open_last_lookups fs/namei.c:3317 [inline] RIP: 0010:path_openat+0xc7b/0x10d0 fs/namei.c:3506 Code: 48 85 d2 74 25 4c 89 f7 44 89 8d 78 ff ff ff 88 45 80 e8 98 c4 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:ffffc90000753cd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8881004764e0 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff888111363780 RBP: ffffc90000753d70 R08: 0000000000000004 R09: 0000000000000000 R10: ffff8881164e0c80 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000753d80 R14: 0000000000000017 R15: ffffc90000753ebc FS: 00007fb33a18c6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000017 CR3: 0000000116f22000 CR4: 00000000003506a0 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 c4 00 00 call 0xc4af 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