ci2 starts bisection 2024-09-17 13:13:33.23940343 +0000 UTC m=+81298.729830991 bisecting fixing commit since 70e1a731d98699d85ada2cbdd4d487e51b2f7441 building syzkaller on 1e9c4cf3ae82ef82220af312606fffe65e124563 ensuring issue is reproducible on original commit 70e1a731d98699d85ada2cbdd4d487e51b2f7441 testing commit 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a2dd42fe1caa3e60dad46cf27a6379f981c22271ffaf8074aee9ac082659a924 all runs: crashed: general protection fault in do_unlinkat representative crash: general protection fault in do_unlinkat, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6edb04604e0140ddf4acf3d344a3887f812c0f20709b9b87ad5a1532862934d8 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat representative crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat, 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=4920 full=6203 leaves diff=245 split chunks (needed=false): <245> split chunk #0 of len 245 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1b8181cea7e104774cfa9dab35968bc7530a129e70804cc1de09d10d4e8141f8 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat representative crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat, 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 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 958278ca504437b38918f027ea36dcba8ff99da519240f3eae5f3e437eacb15b all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat representative crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat, 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 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5e15a34cc2371ea9dc78b3d72e6d95852c2bb6fa2a0ea3310fa2928ddcd63f6e all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat representative crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat, 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 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ca8ca64306507dc7c30b9606ce7b6f797f02883a3e022d0d70b4aed456735e8c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat representative crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat, 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 70e1a731d98699d85ada2cbdd4d487e51b2f7441 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 70e1a731d98699d85ada2cbdd4d487e51b2f7441: net/socket.c:1191: undefined reference to `wext_handle_ioctl' net/socket.c:3385: 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 49 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 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing current HEAD b92c0d35d015044124da6005ed3065becc8d98d9 testing commit b92c0d35d015044124da6005ed3065becc8d98d9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aeb21055c20e26943272e6624ae3f088262e2f5713373f73ba14a0c3dd806eac all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat representative crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h22m40.611110489s (build: 58m7.481282504s, test: 22m36.865852943s) crash still not fixed or there were kernel test errors commit msg: Revert "drm/mipi-dsi: use correct return type for the DSC functions" crash: BUG: unable to handle kernel NULL pointer dereference in do_unlinkat BUG: kernel NULL pointer dereference, address: 000000000000000a #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10f638067 P4D 10f638067 PUD 10f63c067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 443 Comm: syz.0.15 Not tainted 5.15.161-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:__d_entry_type include/linux/dcache.h:404 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:409 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:455 [inline] RIP: 0010:do_unlinkat+0x135/0x2a0 fs/namei.c:4341 Code: 48 81 c7 a0 00 00 00 e8 79 08 aa 00 48 8b 75 b8 48 8d 7d c0 89 da e8 9a 8b ff ff 48 3d 00 f0 ff ff 49 89 c7 0f 87 44 01 00 00 <8b> 00 8b 4d c4 48 8b 75 c8 89 c2 81 e2 00 00 70 00 80 3c 0e 00 0f RSP: 0018:ffffc9000046fea0 EFLAGS: 00010207 RAX: 000000000000000a RBX: 0000000000000000 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff8881035b9280 RBP: ffffc9000046ff08 R08: 0000000000000004 R09: 0000000000000064 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888108584000 R14: 0000000000000000 R15: 000000000000000a FS: 00007f4a38eca6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000000a CR3: 000000010f629000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_unlink fs/namei.c:4396 [inline] __se_sys_unlink fs/namei.c:4394 [inline] __x64_sys_unlink+0x3d/0x60 fs/namei.c:4394 x64_sys_call+0x721/0x990 arch/x86/include/generated/asm/syscalls_64.h:88 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f4a394633b9 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:00007f4a38eca048 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f4a395f2058 RCX: 00007f4a394633b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f4a394d08e6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f4a395f2058 R15: 00007ffc1d295e98 Modules linked in: CR2: 000000000000000a ---[ end trace cfa51def16216189 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:404 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:409 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:455 [inline] RIP: 0010:do_unlinkat+0x135/0x2a0 fs/namei.c:4341 Code: 48 81 c7 a0 00 00 00 e8 79 08 aa 00 48 8b 75 b8 48 8d 7d c0 89 da e8 9a 8b ff ff 48 3d 00 f0 ff ff 49 89 c7 0f 87 44 01 00 00 <8b> 00 8b 4d c4 48 8b 75 c8 89 c2 81 e2 00 00 70 00 80 3c 0e 00 0f RSP: 0018:ffffc9000046fea0 EFLAGS: 00010207 RAX: 000000000000000a RBX: 0000000000000000 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff8881035b9280 RBP: ffffc9000046ff08 R08: 0000000000000004 R09: 0000000000000064 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888108584000 R14: 0000000000000000 R15: 000000000000000a FS: 00007f4a38eca6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000000a CR3: 000000010f629000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 81 c7 a0 00 00 00 add $0xa0,%rdi 7: e8 79 08 aa 00 call 0xaa0885 c: 48 8b 75 b8 mov -0x48(%rbp),%rsi 10: 48 8d 7d c0 lea -0x40(%rbp),%rdi 14: 89 da mov %ebx,%edx 16: e8 9a 8b ff ff call 0xffff8bb5 1b: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 21: 49 89 c7 mov %rax,%r15 24: 0f 87 44 01 00 00 ja 0x16e * 2a: 8b 00 mov (%rax),%eax <-- trapping instruction 2c: 8b 4d c4 mov -0x3c(%rbp),%ecx 2f: 48 8b 75 c8 mov -0x38(%rbp),%rsi 33: 89 c2 mov %eax,%edx 35: 81 e2 00 00 70 00 and $0x700000,%edx 3b: 80 3c 0e 00 cmpb $0x0,(%rsi,%rcx,1) 3f: 0f .byte 0xf