ci2 starts bisection 2026-08-04 16:58:23.754592688 +0000 UTC m=+13651.170581910 bisecting fixing commit since 7ae299a5827ae907825706c33e93f124c678e853 building syzkaller on a898ba9c6c8c17ec9041bb55f68cac381058afda ensuring issue is reproducible on original commit 7ae299a5827ae907825706c33e93f124c678e853 testing commit 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 01634da0e06d3e50b7dee79f46bc6e34f347f789cb6d8f4e26ba371900ae68eb all runs: crashed: general protection fault in filename_create representative crash: general protection fault in filename_create, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: faea302ef1396b602594db2280f697dafa26153ddc39fedcdfbf93376226171f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed kconfig minimization: base=4788 full=6024 leaves diff=248 split chunks (needed=false): <248> split chunk #0 of len 248 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: aaa3f5db6f6d4eb0038a9fda1ef910e4280bbeb5b28de3b465a23863b07e3967 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: b32ed8476c23e4f3dc2e61c2a48ec39a2c4b026527951489e022cc3274c4a7cd all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: f26f32f79314221e37efc25d526707e767fe04346b1841d10cc78e15ea79dd2d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, 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 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: c4387f4b7691a7f3504366221539853db286afdcecc9abde09b7834a6cd744cd all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 7ae299a5827ae907825706c33e93f124c678e853 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 failed building 7ae299a5827ae907825706c33e93f124c678e853: net/socket.c:1128:(.text+0x817): undefined reference to `wext_handle_ioctl' net/socket.c:3397:(.text+0xa08): undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346:(.text+0x109): undefined reference to `wext_proc_exit' net/core/net-procfs.c:330:(.text+0x1e4): 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 0f73d4924a745338c12b47512b95c879c89e5119 testing commit 0f73d4924a745338c12b47512b95c879c89e5119 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 9a374ac8caa29dd42045d4098452ff8afd849a6a3c324b7af9948296745c0fab all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in filename_create representative crash: BUG: unable to handle kernel NULL pointer dereference in filename_create, types: [NULL-POINTER-DEREFERENCE] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 3h27m25.64206676s (build: 1h46m16.566966325s, test: 1h13m33.199531629s) crash still not fixed or there were kernel test errors commit msg: Merge android13-5.10 into android13-5.10-lts crash: BUG: unable to handle kernel NULL pointer dereference in filename_create BUG: kernel NULL pointer dereference, address: 0000000000000013 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 119840067 P4D 119840067 PUD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 483 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:filename_create+0x97/0x160 fs/namei.c:3621 Code: 48 81 c7 a0 00 00 00 e8 d7 a4 a3 00 48 8b 73 08 48 8d 7d c0 44 89 e2 80 ce 06 e8 d4 a6 ff ff 48 3d 00 f0 ff ff 49 89 c4 77 59 00 00 00 70 00 75 3f 41 83 e6 02 0f 84 8b 00 00 00 45 85 ff 4d RSP: 0018:ffffc9000078be78 EFLAGS: 00010203 RAX: 0000000000000013 RBX: ffffc9000078bee0 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff8881172f5c80 RBP: ffffc9000078bec0 R08: 0000000000000004 R09: 0000000000000064 R10: ffff88811711e6c0 R11: 0000000000000000 R12: 0000000000000013 R13: ffff8881079bd000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f50e8c256c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000013 CR3: 0000000117387000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: user_path_create fs/namei.c:3673 [inline] do_mknodat+0xd2/0x240 fs/namei.c:3737 __do_sys_mknod fs/namei.c:3776 [inline] __se_sys_mknod fs/namei.c:3774 [inline] __x64_sys_mknod+0x1a/0x20 fs/namei.c:3774 do_syscall_64+0x32/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f50e8dc2dd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f50e8c25028 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 RAX: ffffffffffffffda RBX: 00007f50e903bfa0 RCX: 00007f50e8dc2dd9 RDX: 0000000000000704 RSI: 0000000000001000 RDI: 00002000000002c0 RBP: 00007f50e8e58d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f50e903c038 R14: 00007f50e903bfa0 R15: 00007fffa13603c8 Modules linked in: CR2: 0000000000000013 ---[ end trace 296848de26f8fcf9 ]--- RIP: 0010:filename_create+0x97/0x160 fs/namei.c:3621 Code: 48 81 c7 a0 00 00 00 e8 d7 a4 a3 00 48 8b 73 08 48 8d 7d c0 44 89 e2 80 ce 06 e8 d4 a6 ff ff 48 3d 00 f0 ff ff 49 89 c4 77 59 00 00 00 70 00 75 3f 41 83 e6 02 0f 84 8b 00 00 00 45 85 ff 4d RSP: 0018:ffffc9000078be78 EFLAGS: 00010203 RAX: 0000000000000013 RBX: ffffc9000078bee0 RCX: 0000000400000000 RDX: 0000000000000003 RSI: 0000000300000000 RDI: ffff8881172f5c80 RBP: ffffc9000078bec0 R08: 0000000000000004 R09: 0000000000000064 R10: ffff88811711e6c0 R11: 0000000000000000 R12: 0000000000000013 R13: ffff8881079bd000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f50e8c256c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000013 CR3: 0000000117387000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 81 c7 a0 00 00 00 add $0xa0,%rdi 7: e8 d7 a4 a3 00 call 0xa3a4e3 c: 48 8b 73 08 mov 0x8(%rbx),%rsi 10: 48 8d 7d c0 lea -0x40(%rbp),%rdi 14: 44 89 e2 mov %r12d,%edx 17: 80 ce 06 or $0x6,%dh 1a: e8 d4 a6 ff ff call 0xffffa6f3 1f: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 25: 49 89 c4 mov %rax,%r12 28: 77 59 ja 0x83 * 2a: f7 00 00 00 70 00 testl $0x700000,(%rax) <-- trapping instruction 30: 75 3f jne 0x71 32: 41 83 e6 02 and $0x2,%r14d 36: 0f 84 8b 00 00 00 je 0xc7 3c: 45 85 ff test %r15d,%r15d 3f: 4d rex.WRB