ci2 starts bisection 2025-12-18 01:32:59.010541705 +0000 UTC m=+1857791.187664762 bisecting fixing commit since 1edb21e89ce47f8b3cf6405a81d40d3147291b57 building syzkaller on fd2207e7cf691493b5b81c50a8a625b4b71dd544 ensuring issue is reproducible on original commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 66e6ccb0f2375f741f8900e678b15f0210ff9fa27ba2c3343d17cdc12d038210 all runs: crashed: general protection fault in vfs_rename representative crash: general protection fault in vfs_rename, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 94215958fd20592383bbd60ed42901eeb7946dc6aa2432b32709a43575ffe151 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: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed kconfig minimization: base=4921 full=6220 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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6659cf79ba057013ffb0d598ad7af820b03544caeadd0d42acb7d13df92ee59 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: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 21eaf00ede45a04552349dfc7e9beaff621cb353e5fe532298e4f2312de80aa8 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: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 308967456603a3b3e673c1f77c55eefc2f3127d94444835a32cae49c0e0cb7ee 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: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3e028c1fca7e67d2d6d81cf6027261b2c321c3c39d72f7a1a6ea4aa8a4d4aa1 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: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 1edb21e89ce47f8b3cf6405a81d40d3147291b57 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 1edb21e89ce47f8b3cf6405a81d40d3147291b57: net/socket.c:1191: undefined reference to `wext_handle_ioctl' net/socket.c:3390: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:343: undefined reference to `wext_proc_exit' net/core/net-procfs.c:327: undefined reference to `wext_proc_init' minimized to 48 configs; suspects: [HID_ZEROPLUS 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 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 USB_XHCI_PCI_RENESAS 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 ZEROPLUS_FF] disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing current HEAD 050dc55b0457aa6986b7618175ec7ccae95b842a testing commit 050dc55b0457aa6986b7618175ec7ccae95b842a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81aeb031766f06832a83ca084e4443f3797dccf6a415f3fee3b4c0fe93f1232b 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: [NULL-POINTER-DEREFERENCE] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h29m24.606940397s (build: 23m8.086966819s, test: 32m59.213994146s) crash still not fixed or there were kernel test errors commit msg: Revert "net/sched: act_connmark: handle errno on tcf_idr_check_alloc" crash: BUG: unable to handle kernel NULL pointer dereference in vfs_rename BUG: kernel NULL pointer dereference, address: 0000000000000048 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1113f9067 P4D 1113f9067 PUD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 452 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:vfs_rename+0x2f/0xad0 fs/namei.c:4729 Code: 57 41 56 41 55 41 54 45 31 e4 53 48 83 c4 80 4c 8b 77 10 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 4c 8b 6f 28 49 8b 76 30 <49> 8b 45 30 48 89 b5 78 ff ff ff 48 39 c6 48 89 45 90 0f 84 07 01 RSP: 0018:ffffc90000457d58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8881002f4031 RSI: ffff88810b7bf400 RDI: ffffc90000457e90 RBP: ffffc90000457e00 R08: 0000000000000006 R09: 0000000000000018 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000018 R14: ffff88810b6cf680 R15: 00000000ffffffd9 FS: 00007f40343ab6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000048 CR3: 000000010f0da000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_renameat2+0x3ad/0x590 fs/namei.c:4993 __do_sys_rename fs/namei.c:5039 [inline] __se_sys_rename fs/namei.c:5037 [inline] __x64_sys_rename+0x40/0x50 fs/namei.c:5037 x64_sys_call+0x744/0x990 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f403455bfc9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f40343ab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f40347b3090 RCX: 00007f403455bfc9 RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000100 RBP: 00007f40345def91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f40347b3128 R14: 00007f40347b3090 R15: 00007ffee3e9bdd8 Modules linked in: CR2: 0000000000000048 ---[ end trace ed80f53afd13588a ]--- RIP: 0010:vfs_rename+0x2f/0xad0 fs/namei.c:4729 Code: 57 41 56 41 55 41 54 45 31 e4 53 48 83 c4 80 4c 8b 77 10 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 4c 8b 6f 28 49 8b 76 30 <49> 8b 45 30 48 89 b5 78 ff ff ff 48 39 c6 48 89 45 90 0f 84 07 01 RSP: 0018:ffffc90000457d58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8881002f4031 RSI: ffff88810b7bf400 RDI: ffffc90000457e90 RBP: ffffc90000457e00 R08: 0000000000000006 R09: 0000000000000018 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000018 R14: ffff88810b6cf680 R15: 00000000ffffffd9 FS: 00007f40343ab6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000048 CR3: 000000010f0da000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 57 push %rdi 1: 41 56 push %r14 3: 41 55 push %r13 5: 41 54 push %r12 7: 45 31 e4 xor %r12d,%r12d a: 53 push %rbx b: 48 83 c4 80 add $0xffffffffffffff80,%rsp f: 4c 8b 77 10 mov 0x10(%rdi),%r14 13: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 1a: 00 00 1c: 48 89 45 d0 mov %rax,-0x30(%rbp) 20: 31 c0 xor %eax,%eax 22: 4c 8b 6f 28 mov 0x28(%rdi),%r13 26: 49 8b 76 30 mov 0x30(%r14),%rsi * 2a: 49 8b 45 30 mov 0x30(%r13),%rax <-- trapping instruction 2e: 48 89 b5 78 ff ff ff mov %rsi,-0x88(%rbp) 35: 48 39 c6 cmp %rax,%rsi 38: 48 89 45 90 mov %rax,-0x70(%rbp) 3c: 0f .byte 0xf 3d: 84 07 test %al,(%rdi) 3f: 01 .byte 0x1