ci2 starts bisection 2023-12-23 04:15:22.24166502 +0000 UTC m=+44725.565550581 bisecting fixing commit since 53771c1826da1344a90810469ad8e30ccaa0c00a building syzkaller on 361b23dca53619ee1dfd92dd6a74a7f3e58f270c ensuring issue is reproducible on original commit 53771c1826da1344a90810469ad8e30ccaa0c00a testing commit 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1915dde727113995364ec3aba34bb8bc526c21a0109f3f936d74f70ee56024e all runs: crashed: general protection fault in vfs_rename representative crash: general protection fault in vfs_rename, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 698ecdd8fc657a88771d668f86d3d2c6c1461747a7745690bdff616e91be74e3 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_rename representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename, 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=6485 leaves diff=250 split chunks (needed=false): <250> split chunk #0 of len 250 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: af41ada8a30e9bcc3789b360d9d9e53140b16d25f7f652fa0418b5cf439c555f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_rename representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e001644587ae87ccff2db48c08ee68b3784daacf28f3e36016a93eb588c2a559 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_rename representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename, 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 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 398d8a8a9ca85b2c82406e12edfdba67746015a10ea0487bc9637bc34eb106a1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_rename representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff29ee8aba6bcaf7840e957deb15d147a8c39ec50ed0dec6f3cbfd659e258a90 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_rename representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 53771c1826da1344a90810469ad8e30ccaa0c00a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 53771c1826da1344a90810469ad8e30ccaa0c00a: net/socket.c:1225: undefined reference to `wext_handle_ioctl' net/socket.c:3420: 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_CDC_MBIM 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_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_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing current HEAD 401a2769d99066952f3bfb73a8ce6b0269bc04d7 testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 68b08cac5732de987f2f63b356262d24f8a0e8e834451ee6cc98b147e19bdd3c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_rename representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 39m50.916268793s (build: 17m21.673228153s, test: 19m49.147996541s) crash still not fixed or there were kernel test errors commit msg: UPSTREAM: dm verity: don't perform FEC for failed readahead IO crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename BUG: kernel NULL pointer dereference, address: 0000000000000040 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10bad7067 P4D 10bad7067 PUD 10bb9e067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 354 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:vfs_rename+0x45/0x570 fs/namei.c:4692 Code: 00 00 48 89 45 d0 4c 8b 47 08 4c 8b 7f 10 48 8b 4f 20 48 8b 77 28 4c 8b 4f 30 41 bd 00 00 60 00 45 23 2f 8b 57 38 49 8b 5f 30 <48> 8b 7e 30 48 8b 41 28 8b 80 28 04 00 00 48 c7 45 c8 00 00 00 00 RSP: 0018:ffffc900007cfd38 EFLAGS: 00010206 RAX: 4546205b5ec3b500 RBX: ffff88810c278780 RCX: ffff88810c278b40 RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc900007cfe90 RBP: ffffc900007cfdd8 R08: ffff88810c278b40 R09: ffffc900007cfe40 R10: ffff88810bafe720 R11: ffff888100041400 R12: ffffc900007cfe90 R13: 0000000000400000 R14: 0000000020000101 R15: ffff88810cd3f680 FS: 00007fd7246f06c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000040 CR3: 000000010bb01000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_renameat2+0x404/0x600 fs/namei.c:4935 __do_sys_rename fs/namei.c:4981 [inline] __se_sys_rename fs/namei.c:4979 [inline] __x64_sys_rename+0x3f/0x50 fs/namei.c:4979 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: 0033:0x7fd723a7cae9 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:00007fd7246f00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fd723b9bf80 RCX: 00007fd723a7cae9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100 RBP: 00007fd723ac847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd723b9bf80 R15: 00007ffd9076a238 Modules linked in: CR2: 0000000000000040 ---[ end trace 0000000000000000 ]--- RIP: 0010:vfs_rename+0x45/0x570 fs/namei.c:4692 Code: 00 00 48 89 45 d0 4c 8b 47 08 4c 8b 7f 10 48 8b 4f 20 48 8b 77 28 4c 8b 4f 30 41 bd 00 00 60 00 45 23 2f 8b 57 38 49 8b 5f 30 <48> 8b 7e 30 48 8b 41 28 8b 80 28 04 00 00 48 c7 45 c8 00 00 00 00 RSP: 0018:ffffc900007cfd38 EFLAGS: 00010206 RAX: 4546205b5ec3b500 RBX: ffff88810c278780 RCX: ffff88810c278b40 RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc900007cfe90 RBP: ffffc900007cfdd8 R08: ffff88810c278b40 R09: ffffc900007cfe40 R10: ffff88810bafe720 R11: ffff888100041400 R12: ffffc900007cfe90 R13: 0000000000400000 R14: 0000000020000101 R15: ffff88810cd3f680 FS: 00007fd7246f06c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000040 CR3: 000000010bb01000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 89 45 d0 mov %rax,-0x30(%rbp) 6: 4c 8b 47 08 mov 0x8(%rdi),%r8 a: 4c 8b 7f 10 mov 0x10(%rdi),%r15 e: 48 8b 4f 20 mov 0x20(%rdi),%rcx 12: 48 8b 77 28 mov 0x28(%rdi),%rsi 16: 4c 8b 4f 30 mov 0x30(%rdi),%r9 1a: 41 bd 00 00 60 00 mov $0x600000,%r13d 20: 45 23 2f and (%r15),%r13d 23: 8b 57 38 mov 0x38(%rdi),%edx 26: 49 8b 5f 30 mov 0x30(%r15),%rbx * 2a: 48 8b 7e 30 mov 0x30(%rsi),%rdi <-- trapping instruction 2e: 48 8b 41 28 mov 0x28(%rcx),%rax 32: 8b 80 28 04 00 00 mov 0x428(%rax),%eax 38: 48 c7 45 c8 00 00 00 movq $0x0,-0x38(%rbp) 3f: 00