ci2 starts bisection 2024-05-22 20:59:31.500760675 +0000 UTC m=+39750.260140634 bisecting fixing commit since af361f9a1066ff9442eabafc458ff373481499a4 building syzkaller on 51c4dcff83b0574620c280cc5130ef59cc4a2e32 ensuring issue is reproducible on original commit af361f9a1066ff9442eabafc458ff373481499a4 testing commit af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d96c44988bc029f91062ce4dd8654c500f2febefa26e2554b8fa7995dcba957c all runs: crashed: general protection fault in do_rmdir representative crash: general protection fault in do_rmdir, 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 af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c54bbf29b02b30f3076bb7de9e7fdf450e66de99f07dcfd50ccef8464ef3b3cd all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_rmdir representative crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed kconfig minimization: base=5179 full=6491 leaves diff=256 split chunks (needed=false): <256> split chunk #0 of len 256 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b1eab2707283945b972a936c32924ccafd578c936049ff390e2c90c2b3e7caa all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_rmdir representative crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir, 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 af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3fcf932228ec2d29135fba39cd55257b4263d06f074925357cb7c37c5c3ae644 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_rmdir representative crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1a4c224c562f12b659fe62b9e16af64cf6a00eddbcbd08505d29fddc22336f7e all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_rmdir representative crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dcaac250f21f0d0e2e8f28cb18bfc8582a1acc7645343ad2e2b36fa907c79176 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_rmdir representative crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit af361f9a1066ff9442eabafc458ff373481499a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building af361f9a1066ff9442eabafc458ff373481499a4: net/socket.c:1245: undefined reference to `wext_handle_ioctl' net/socket.c:3442: 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 48 configs; suspects: [HID_ZEROPLUS 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 V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD 2755f25d0c9ae7bb320880583ab41705f7372d66 testing commit 2755f25d0c9ae7bb320880583ab41705f7372d66 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6cea2ff4660a8cd56d5a89c57bdf8a87023212aeb4de87189897ac72a38ba6d3 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in do_rmdir representative crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 38m28.827758283s (build: 17m8.310776947s, test: 19m2.197090309s) crash still not fixed or there were kernel test errors commit msg: UPSTREAM: usb: gadget: ncm: Fix handling of zero block length packets crash: BUG: unable to handle kernel NULL pointer dereference in do_rmdir BUG: kernel NULL pointer dereference, address: 0000000000000038 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 110be1067 P4D 110be1067 PUD 110bc2067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 356 Comm: syz-executor.0 Not tainted 6.1.75-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:do_rmdir+0x100/0x1c0 fs/namei.c:4251 Code: 8b 7e 30 b8 a0 00 00 00 48 01 c7 e8 5a 32 b9 00 48 8d 7d b0 4c 89 f6 44 89 e2 e8 db c6 ff ff 49 89 c7 48 3d 00 f0 ff ff 77 2d <49> 83 7f 30 00 74 15 49 8b 7d 18 49 8b 76 30 4c 89 fa e8 e9 fa ff RSP: 0018:ffffc900007a7eb0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: ffffc900007a7f01 RCX: 0000000000000003 RDX: 00000000ffffff9c RSI: 0000000300000000 RDI: ffff888108a64c00 RBP: ffffc900007a7f10 R08: ffff888111caca40 R09: ffffffff8154602c R10: ffff888111caca40 R11: ffff888100041400 R12: 0000000000000000 R13: ffff888108d24620 R14: ffff88810d173680 R15: 0000000000000008 FS: 00007f2cdc8256c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 0000000110bc7000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:4278 [inline] __se_sys_rmdir fs/namei.c:4276 [inline] __x64_sys_rmdir+0x1e/0x30 fs/namei.c:4276 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2cdba7dde9 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:00007f2cdc8250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f2cdbbac050 RCX: 00007f2cdba7dde9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007f2cdbaca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f2cdbbac050 R15: 00007fff7154ec88 Modules linked in: CR2: 0000000000000038 ---[ end trace 0000000000000000 ]--- RIP: 0010:do_rmdir+0x100/0x1c0 fs/namei.c:4251 Code: 8b 7e 30 b8 a0 00 00 00 48 01 c7 e8 5a 32 b9 00 48 8d 7d b0 4c 89 f6 44 89 e2 e8 db c6 ff ff 49 89 c7 48 3d 00 f0 ff ff 77 2d <49> 83 7f 30 00 74 15 49 8b 7d 18 49 8b 76 30 4c 89 fa e8 e9 fa ff RSP: 0018:ffffc900007a7eb0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: ffffc900007a7f01 RCX: 0000000000000003 RDX: 00000000ffffff9c RSI: 0000000300000000 RDI: ffff888108a64c00 RBP: ffffc900007a7f10 R08: ffff888111caca40 R09: ffffffff8154602c R10: ffff888111caca40 R11: ffff888100041400 R12: 0000000000000000 R13: ffff888108d24620 R14: ffff88810d173680 R15: 0000000000000008 FS: 00007f2cdc8256c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 0000000110bc7000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 7e 30 mov 0x30(%rsi),%edi 3: b8 a0 00 00 00 mov $0xa0,%eax 8: 48 01 c7 add %rax,%rdi b: e8 5a 32 b9 00 call 0xb9326a 10: 48 8d 7d b0 lea -0x50(%rbp),%rdi 14: 4c 89 f6 mov %r14,%rsi 17: 44 89 e2 mov %r12d,%edx 1a: e8 db c6 ff ff call 0xffffc6fa 1f: 49 89 c7 mov %rax,%r15 22: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 28: 77 2d ja 0x57 * 2a: 49 83 7f 30 00 cmpq $0x0,0x30(%r15) <-- trapping instruction 2f: 74 15 je 0x46 31: 49 8b 7d 18 mov 0x18(%r13),%rdi 35: 49 8b 76 30 mov 0x30(%r14),%rsi 39: 4c 89 fa mov %r15,%rdx 3c: e8 .byte 0xe8 3d: e9 .byte 0xe9 3e: fa cli 3f: ff .byte 0xff