ci2 starts bisection 2024-01-23 08:21:55.362763547 +0000 UTC m=+14703.836130648 bisecting fixing commit since ae5ea9043de17f2ec08a92317add206590784bd9 building syzkaller on 0b6a67ac4b0dc26f43030c5edd01c9175f13b784 ensuring issue is reproducible on original commit ae5ea9043de17f2ec08a92317add206590784bd9 testing commit ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aacfc3dfaf702c02bdf0ef70c31452ea5867f0054428f919cb0a3a93d005dc09 all runs: crashed: general protection fault in filename_create representative crash: general protection fault in filename_create, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 10c2ffeb71e032a30324418cd5fb6ff4b3b09dd579f39a74edf7d87f61397e59 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=5179 full=6487 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 ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ecba6dbde4c95f2fb03ad5fab64c0a732b3263bef670d68e5935b2def5b5333 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, 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 ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0a5d8a6b71081a661cd467c1ae75ef92eaad47ff46b9d80af2f1f2e76f0b0501 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1686b4831073fe0cd3c9fe235e4e1c6b6f80fcfd2a431d3d475019e4929120b6 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 198dcaed0459c6d5646ec81e26acea5b4fd5ef94e631bb71b2d063e0c5d97de0 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, 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 ae5ea9043de17f2ec08a92317add206590784bd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building ae5ea9043de17f2ec08a92317add206590784bd9: 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD 9267e267be78e29e9539c63969738d139980981b testing commit 9267e267be78e29e9539c63969738d139980981b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c99f06a13db187f989038e2cd2b8172763586af9d67087231163a9d548ba6bca all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 45m3.774873299s (build: 22m57.946054546s, test: 19m19.0670535s) crash still not fixed or there were kernel test errors commit msg: ANDROID: uid_sys_stats: Fully initialize uid_entry_tmp value crash: BUG: unable to handle kernel NULL pointer dereference in filename_create BUG: kernel NULL pointer dereference, address: 000000000000001a #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 111ba8067 P4D 111ba8067 PUD 111bac067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 351 Comm: syz-executor.0 Not tainted 6.1.57-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:d_is_positive include/linux/dcache.h:455 [inline] RIP: 0010:filename_create+0xeb/0x1a0 fs/namei.c:3813 Code: 7d c0 44 89 f2 e8 05 11 00 00 49 89 c6 48 3d 00 f0 ff ff 76 05 8b 5d b4 eb 41 80 7d bb 00 0f 95 c0 41 f6 c5 02 0f 94 c1 20 c1 <41> 0f b6 56 02 f6 c2 70 0f 95 c0 08 c8 49 c7 c7 ef ff ff ff f6 c2 RSP: 0018:ffffc90000797e48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000400000000 RSI: 0000000000000000 RDI: ffff888100303900 RBP: ffffc90000797e98 R08: 00000000ffffff9c R09: ffffffff8154121c R10: ffff88810e766bc0 R11: ffff888100041400 R12: ffffc90000797eb8 R13: 0000000000000000 R14: 0000000000000018 R15: 00000000000000a0 FS: 00007f768b9c56c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000001a CR3: 0000000111b9a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_mknodat+0xf4/0x210 fs/namei.c:3952 __do_sys_mknodat fs/namei.c:3993 [inline] __se_sys_mknodat fs/namei.c:3990 [inline] __x64_sys_mknodat+0x35/0x40 fs/namei.c:3990 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: 0033:0x7f768ac7cae9 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:00007f768b9c50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 RAX: ffffffffffffffda RBX: 00007f768ad9bf80 RCX: 00007f768ac7cae9 RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 00007f768acc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000700 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f768ad9bf80 R15: 00007fff71e188d8 Modules linked in: CR2: 000000000000001a ---[ 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:d_is_positive include/linux/dcache.h:455 [inline] RIP: 0010:filename_create+0xeb/0x1a0 fs/namei.c:3813 Code: 7d c0 44 89 f2 e8 05 11 00 00 49 89 c6 48 3d 00 f0 ff ff 76 05 8b 5d b4 eb 41 80 7d bb 00 0f 95 c0 41 f6 c5 02 0f 94 c1 20 c1 <41> 0f b6 56 02 f6 c2 70 0f 95 c0 08 c8 49 c7 c7 ef ff ff ff f6 c2 RSP: 0018:ffffc90000797e48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000400000000 RSI: 0000000000000000 RDI: ffff888100303900 RBP: ffffc90000797e98 R08: 00000000ffffff9c R09: ffffffff8154121c R10: ffff88810e766bc0 R11: ffff888100041400 R12: ffffc90000797eb8 R13: 0000000000000000 R14: 0000000000000018 R15: 00000000000000a0 FS: 00007f768b9c56c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000001a CR3: 0000000111b9a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 7d c0 jge 0xffffffc2 2: 44 89 f2 mov %r14d,%edx 5: e8 05 11 00 00 call 0x110f a: 49 89 c6 mov %rax,%r14 d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 13: 76 05 jbe 0x1a 15: 8b 5d b4 mov -0x4c(%rbp),%ebx 18: eb 41 jmp 0x5b 1a: 80 7d bb 00 cmpb $0x0,-0x45(%rbp) 1e: 0f 95 c0 setne %al 21: 41 f6 c5 02 test $0x2,%r13b 25: 0f 94 c1 sete %cl 28: 20 c1 and %al,%cl * 2a: 41 0f b6 56 02 movzbl 0x2(%r14),%edx <-- trapping instruction 2f: f6 c2 70 test $0x70,%dl 32: 0f 95 c0 setne %al 35: 08 c8 or %cl,%al 37: 49 c7 c7 ef ff ff ff mov $0xffffffffffffffef,%r15 3e: f6 .byte 0xf6 3f: c2 .byte 0xc2