ci2 starts bisection 2025-02-14 17:52:28.736796088 +0000 UTC m=+15480.331349120 bisecting fixing commit since 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf building syzkaller on 8d446f1521b580230a60c9ae228bf0c26312c80b ensuring issue is reproducible on original commit 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf testing commit 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 092f9733c8bc7be266e5d6ae6ae4f24f7b3f4d15737d1d73fff9707fda90ff8f all runs: crashed: general protection fault in vfs_link representative crash: general protection fault in vfs_link, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 84a0a96bcca51ce3a825c5ae807eb3b913197e5d3755fd46d7fbe123a8c56f3c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_link representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=5179 full=6492 leaves diff=255 split chunks (needed=false): <255> split chunk #0 of len 255 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 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 01fb917dabbd24aa9e6de41a2ebfb895cc5a6a86042c426a1751273f406ecf74 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_link representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link, 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 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 72791ebbc27f9a79afa960105810b32a88a2c8a1fd84f92d97316de2a4936672 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_link representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link, 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 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ca5e2479dfb09170a65bdfcd87accf21df5f71ff52fa4d9db8bbb51a2f972251 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_link representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link, 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 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a3b7368937bda19c626fc217f0284bdd484d38ad475bb5e5aa8e35a006c172d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_link representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link, 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 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 8c0f9174731da74dc3dbcf5bb7e3b048183a0ecf: 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 51 configs; suspects: [HID_ZEROPLUS 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 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD ccc915784332a8717d3fef84283c416c0e57d3d6 testing commit ccc915784332a8717d3fef84283c416c0e57d3d6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9d3773ba77b7f929b0fcdd89e012a022edb2b34757ca6a34fe622e14793ae633 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vfs_link representative crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 49m15.173164795s (build: 19m46.882237079s, test: 24m57.938215174s) crash still not fixed or there were kernel test errors commit msg: ANDROID: cma: Add restrict_cma_redirect boot parameter crash: BUG: unable to handle kernel NULL pointer dereference in vfs_link BUG: kernel NULL pointer dereference, address: 0000000000000030 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 111e5f067 P4D 111e5f067 PUD 111e65067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 365 Comm: syz-executor.0 Not tainted 6.1.124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:vfs_link+0x11/0x2b0 fs/namei.c:4554 Code: ff ff 48 89 df be 9c ff ff ff 48 89 c2 e8 27 fd ff ff 48 98 5b 41 5e 5d c3 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 <4c> 8b 7f 30 41 bd fe ff ff ff 4d 85 ff 0f 84 a9 00 00 00 49 89 d4 RSP: 0018:ffffc900007c3d40 EFLAGS: 00010282 RAX: 000000000c592101 RBX: ffff88810c5920e8 RCX: ffff88810c74dc30 RDX: ffff88810c5920e8 RSI: ffffffff8304fdb8 RDI: 0000000000000000 RBP: ffffc900007c3d80 R08: 0000000000000000 R09: ffffffff81262cb9 R10: ffff888108ac2300 R11: ffff888108d194c8 R12: ffff8881008e8418 R13: ffff88810c74dc30 R14: ffff88810c592188 R15: ffff888109d1bc30 FS: 00007f1f4b16d6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000030 CR3: 0000000111e50000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: incfs_link fs/incfs/vfs.c:648 [inline] dir_link+0x14b/0x1e0 fs/incfs/vfs.c:1321 vfs_link+0x21c/0x2b0 fs/namei.c:4598 do_linkat+0x132/0x340 fs/namei.c:4669 __do_sys_linkat fs/namei.c:4697 [inline] __se_sys_linkat fs/namei.c:4694 [inline] __x64_sys_linkat+0x5a/0x70 fs/namei.c:4694 x64_sys_call+0x6f7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:266 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f1f4a47dda9 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:00007f1f4b16d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000109 RAX: ffffffffffffffda RBX: 00007f1f4a5abf80 RCX: 00007f1f4a47dda9 RDX: 0000000000000004 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00007f1f4a4ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1f4a5abf80 R15: 00007ffd6aa58358 Modules linked in: CR2: 0000000000000030 ---[ end trace 0000000000000000 ]--- RIP: 0010:vfs_link+0x11/0x2b0 fs/namei.c:4554 Code: ff ff 48 89 df be 9c ff ff ff 48 89 c2 e8 27 fd ff ff 48 98 5b 41 5e 5d c3 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 <4c> 8b 7f 30 41 bd fe ff ff ff 4d 85 ff 0f 84 a9 00 00 00 49 89 d4 RSP: 0018:ffffc900007c3d40 EFLAGS: 00010282 RAX: 000000000c592101 RBX: ffff88810c5920e8 RCX: ffff88810c74dc30 RDX: ffff88810c5920e8 RSI: ffffffff8304fdb8 RDI: 0000000000000000 RBP: ffffc900007c3d80 R08: 0000000000000000 R09: ffffffff81262cb9 R10: ffff888108ac2300 R11: ffff888108d194c8 R12: ffff8881008e8418 R13: ffff88810c74dc30 R14: ffff88810c592188 R15: ffff888109d1bc30 FS: 00007f1f4b16d6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000030 CR3: 0000000111e50000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff 48 89 decl -0x77(%rax) 3: df be 9c ff ff ff fistpll -0x64(%rsi) 9: 48 89 c2 mov %rax,%rdx c: e8 27 fd ff ff call 0xfffffd38 11: 48 98 cltq 13: 5b pop %rbx 14: 41 5e pop %r14 16: 5d pop %rbp 17: c3 ret 18: 55 push %rbp 19: 48 89 e5 mov %rsp,%rbp 1c: 41 57 push %r15 1e: 41 56 push %r14 20: 41 55 push %r13 22: 41 54 push %r12 24: 53 push %rbx 25: 48 83 ec 18 sub $0x18,%rsp * 29: 4c 8b 7f 30 mov 0x30(%rdi),%r15 <-- trapping instruction 2d: 41 bd fe ff ff ff mov $0xfffffffe,%r13d 33: 4d 85 ff test %r15,%r15 36: 0f 84 a9 00 00 00 je 0xe5 3c: 49 89 d4 mov %rdx,%r12