ci2 starts bisection 2024-01-16 05:57:00.826645126 +0000 UTC m=+43943.255363038 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: dea7bdec408e4076bba058c1c21b2a8e894ad4842ca9cdd0c5eddaa5bc92f26b 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 [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: 990b34129cc2ded0cff25939d85bfecae3c798e66e983d56b8b9e8da70023872 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], 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 [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: d0c965f7ab518948a5a4dbc3e9679a378dc806c55fcf4bbc6498a1e501123538 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 0da9a7bcb7a258399e414fad32846139a47e3698 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 931242d139a29acf942ed3e5de2133673b2be353ac7bae883bac091e603ae3df 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], 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: 435dd17a156f9d8670dcda1db5f563770ecfd6feb534115fc4af572371bf2777 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: 442340a615ef3c19be7005344e7c77b5f985ea3bde94d0d3542939173e560f4e 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 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing current HEAD d25beb655398d9bcb573c3ca4de80a73a1fcf197 testing commit d25beb655398d9bcb573c3ca4de80a73a1fcf197 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a79dc23413c2b247d76b3ee66dc559f8481a9c91b285ae7ad72d3fa004e6c11 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: 39m41.132742583s (build: 12m5.495401544s, test: 25m58.882399779s) crash still not fixed or there were kernel test errors commit msg: Merge 5.10.207 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 111197067 P4D 111197067 PUD 11119b067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 345 Comm: syz-executor.0 Not tainted 5.10.207-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:do_rmdir+0x10a/0x1b0 fs/namei.c:3911 Code: 81 c7 a0 00 00 00 e8 45 d8 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:ffffc900005f7ec0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000001 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff88810a9b1280 RBP: ffffc900005f7f18 R08: 0000000000000004 R09: 0000000000000064 R10: ffff8881003c4e80 R11: 0000000000000001 R12: ffff888107f88000 R13: 00000000ffffff9c R14: 0000000000000008 R15: 0000000000000000 FS: 00007fbf2ff166c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 0000000111188000 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: 0033:0x7fbf30393ae9 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:00007fbf2ff160c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007fbf304b2f80 RCX: 00007fbf30393ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007fbf303df47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fbf304b2f80 R15: 00007ffd35d96618 Modules linked in: CR2: 0000000000000038 ---[ end trace 8d456fb4272cc086 ]--- RIP: 0010:do_rmdir+0x10a/0x1b0 fs/namei.c:3911 Code: 81 c7 a0 00 00 00 e8 45 d8 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:ffffc900005f7ec0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000001 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff88810a9b1280 RBP: ffffc900005f7f18 R08: 0000000000000004 R09: 0000000000000064 R10: ffff8881003c4e80 R11: 0000000000000001 R12: ffff888107f88000 R13: 00000000ffffff9c R14: 0000000000000008 R15: 0000000000000000 FS: 00007fbf2ff166c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 0000000111188000 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 45 d8 a1 00 call 0xa1d850 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