ci2 starts bisection 2024-03-19 11:05:31.570555211 +0000 UTC m=+80347.003445401 bisecting fixing commit since 0da9a7bcb7a258399e414fad32846139a47e3698 building syzkaller on f819d6f7cb99737851dcaaa51f11190138fd48d5 ensuring issue is reproducible on original commit 0da9a7bcb7a258399e414fad32846139a47e3698 testing commit 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d6c7ce5e15b8519b41c09a1b0144e1cdcde83f6fc5664506ea289cf1ec201c8e 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31aae37fe17b112e12a321c6a4235b69c7852cf75d8d9f27693b9b276ec467bf 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4789 full=6022 leaves diff=238 split chunks (needed=false): <238> split chunk #0 of len 238 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 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 819b26b97a9bd601cae45f3af6354d61beab7643deffee5d752bf9e8150b60de 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 964683c8527ae34eecbdea9116b22eca049828865763849c8872c0458f37986e 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 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5f54df8ef6572c2a86a93582663f87585e6acee2d195d13c7221f9f083b04b63 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 52e14d2f173254f27031afa703e3fa6b7abf429f012d05b0957e4682bfe82bf4 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 0da9a7bcb7a258399e414fad32846139a47e3698: net/socket.c:1126: undefined reference to `wext_handle_ioctl' net/socket.c:3395: 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 46 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 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD dd976ecce2ce969d698599c84c8e7dcbb07c9aaf testing commit dd976ecce2ce969d698599c84c8e7dcbb07c9aaf gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f7ec07ffd332634fc563c4500eaba6e3474f8f7e0e9729eb568a9f2e5805ec26 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: 50m3.150527651s (build: 13m33.55932025s, test: 29m15.371508757s) crash still not fixed or there were kernel test errors commit msg: Merge "Merge branch 'android13-5.10' into branch 'android13-5.10-lts'" into android13-5.10-lts 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 10958c067 P4D 10958c067 PUD 10fcb2067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 363 Comm: syz-executor.0 Not tainted 5.10.209-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:do_rmdir+0x10a/0x1b0 fs/namei.c:3911 Code: 81 c7 a0 00 00 00 e8 35 de a1 00 48 8b 75 b8 48 8d 7d c0 44 89 f2 e8 15 94 ff ff 48 3d 00 f0 ff ff 49 89 c6 0f 87 81 00 00 00 <48> 83 78 30 00 74 6f 48 8b 45 b8 ba 01 00 00 00 4c 89 f6 4c 8b 78 RSP: 0018:ffffc90000597ec0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000001 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff888101de3780 RBP: ffffc90000597f18 R08: 0000000000000004 R09: 0000000000000064 R10: ffff8881095c6ae0 R11: 0000000000004000 R12: ffff8881071c4000 R13: 00000000ffffff9c R14: 0000000000000008 R15: 0000000000000000 FS: 00007f0d621c86c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000010fc17000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:3936 [inline] __se_sys_rmdir fs/namei.c:3934 [inline] __x64_sys_rmdir+0x3d/0x60 fs/namei.c:3934 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f0d62645ae9 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:00007f0d621c80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f0d62764f80 RCX: 00007f0d62645ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007f0d6269147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0d62764f80 R15: 00007fff389d0c68 Modules linked in: CR2: 0000000000000038 ---[ end trace d1c7dd984a33fe9e ]--- RIP: 0010:do_rmdir+0x10a/0x1b0 fs/namei.c:3911 Code: 81 c7 a0 00 00 00 e8 35 de a1 00 48 8b 75 b8 48 8d 7d c0 44 89 f2 e8 15 94 ff ff 48 3d 00 f0 ff ff 49 89 c6 0f 87 81 00 00 00 <48> 83 78 30 00 74 6f 48 8b 45 b8 ba 01 00 00 00 4c 89 f6 4c 8b 78 RSP: 0018:ffffc90000597ec0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000001 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff888101de3780 RBP: ffffc90000597f18 R08: 0000000000000004 R09: 0000000000000064 R10: ffff8881095c6ae0 R11: 0000000000004000 R12: ffff8881071c4000 R13: 00000000ffffff9c R14: 0000000000000008 R15: 0000000000000000 FS: 00007f0d621c86c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000010fc17000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 81 c7 a0 00 00 00 add $0xa0,%edi 6: e8 35 de a1 00 call 0xa1de40 b: 48 8b 75 b8 mov -0x48(%rbp),%rsi f: 48 8d 7d c0 lea -0x40(%rbp),%rdi 13: 44 89 f2 mov %r14d,%edx 16: e8 15 94 ff ff call 0xffff9430 1b: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 21: 49 89 c6 mov %rax,%r14 24: 0f 87 81 00 00 00 ja 0xab * 2a: 48 83 78 30 00 cmpq $0x0,0x30(%rax) <-- trapping instruction 2f: 74 6f je 0xa0 31: 48 8b 45 b8 mov -0x48(%rbp),%rax 35: ba 01 00 00 00 mov $0x1,%edx 3a: 4c 89 f6 mov %r14,%rsi 3d: 4c rex.WR 3e: 8b .byte 0x8b 3f: 78 .byte 0x78