ci2 starts bisection 2024-01-03 19:03:38.392342521 +0000 UTC m=+93.974769099 bisecting fixing commit since 6465e29536ed740086d2e3b79106f597c977acbd building syzkaller on f819d6f7cb99737851dcaaa51f11190138fd48d5 ensuring issue is reproducible on original commit 6465e29536ed740086d2e3b79106f597c977acbd testing commit 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 51448b3208f4b03e320b6f0722fdd740a38304680997fee72e512628c4856e2c 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f8287a2d8bd970aca502fcd2fb1da79453523da3c9ccf2bd738522320aca0ed6 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=5179 full=6490 leaves diff=254 split chunks (needed=false): <254> split chunk #0 of len 254 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 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82961b70e9ae00715b7accb84bac234318346c9b0fd488f3c499c56366f07d1b 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 694a8ff0a335bf24576ea72baac0d74e2ffad21424156139bf8230af2f132b76 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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 53bfb512d621c57590a9665859f2bd03f15127297afbb05fdf39f868b34cafbb 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 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 43493fc0c792892a868d1edba5b32f8432c141a2e0b93bb9d0e3a7389c16b110 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 6465e29536ed740086d2e3b79106f597c977acbd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 6465e29536ed740086d2e3b79106f597c977acbd: net/socket.c:1242: undefined reference to `wext_handle_ioctl' net/socket.c:3437: 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_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 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 37e0a5b868093b50e698e43ac2412cd9a883f395 testing commit 37e0a5b868093b50e698e43ac2412cd9a883f395 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf72b17eca90606ccfb76a88ec618c88bee866b4929673e30486b016f70a56d3 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: 1h26m35.763915282s (build: 26m5.448034136s, test: 26m52.490883092s) crash still not fixed or there were kernel test errors commit msg: BACKPORT: FROMGIT: erofs: enable sub-page compressed block support 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 11329c067 P4D 11329c067 PUD 1132a0067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 352 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:do_rmdir+0xfa/0x1c0 fs/namei.c:4174 Code: 8b 7e 30 b8 a0 00 00 00 48 01 c7 e8 a0 e4 b8 00 48 8d 7d b0 4c 89 f6 44 89 e2 e8 61 03 00 00 48 89 c3 48 3d 00 f0 ff ff 77 2d <48> 83 7b 30 00 74 15 49 8b 7f 18 49 8b 76 30 48 89 da e8 ef fa ff RSP: 0018:ffffc9000074feb0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000008 RCX: 0000000000000003 RDX: 0000000300000000 RSI: 0000000000000000 RDI: ffff888108bb9300 RBP: ffffc9000074ff10 R08: 00000000ffffff9c R09: ffffffff815408dc R10: ffff88811323c820 R11: ffff888100041400 R12: 0000000000000000 R13: 0000000000000001 R14: ffff88810d8e2270 R15: ffff888108a019a0 FS: 00007ffa84d8d6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000011328f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:4201 [inline] __se_sys_rmdir fs/namei.c:4199 [inline] __x64_sys_rmdir+0x1e/0x30 fs/namei.c:4199 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: 0033:0x7ffa8407cae9 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:00007ffa84d8d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007ffa8419bf80 RCX: 00007ffa8407cae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007ffa840c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffa8419bf80 R15: 00007ffd263f9c48 Modules linked in: CR2: 0000000000000038 ---[ end trace 0000000000000000 ]--- RIP: 0010:do_rmdir+0xfa/0x1c0 fs/namei.c:4174 Code: 8b 7e 30 b8 a0 00 00 00 48 01 c7 e8 a0 e4 b8 00 48 8d 7d b0 4c 89 f6 44 89 e2 e8 61 03 00 00 48 89 c3 48 3d 00 f0 ff ff 77 2d <48> 83 7b 30 00 74 15 49 8b 7f 18 49 8b 76 30 48 89 da e8 ef fa ff RSP: 0018:ffffc9000074feb0 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000008 RCX: 0000000000000003 RDX: 0000000300000000 RSI: 0000000000000000 RDI: ffff888108bb9300 RBP: ffffc9000074ff10 R08: 00000000ffffff9c R09: ffffffff815408dc R10: ffff88811323c820 R11: ffff888100041400 R12: 0000000000000000 R13: 0000000000000001 R14: ffff88810d8e2270 R15: ffff888108a019a0 FS: 00007ffa84d8d6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000011328f000 CR4: 00000000003506a0 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 a0 e4 b8 00 call 0xb8e4b0 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 61 03 00 00 call 0x380 1f: 48 89 c3 mov %rax,%rbx 22: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 28: 77 2d ja 0x57 * 2a: 48 83 7b 30 00 cmpq $0x0,0x30(%rbx) <-- trapping instruction 2f: 74 15 je 0x46 31: 49 8b 7f 18 mov 0x18(%r15),%rdi 35: 49 8b 76 30 mov 0x30(%r14),%rsi 39: 48 89 da mov %rbx,%rdx 3c: e8 .byte 0xe8 3d: ef out %eax,(%dx) 3e: fa cli 3f: ff .byte 0xff