ci2 starts bisection 2024-10-23 21:22:26.127326012 +0000 UTC m=+81720.111778694 bisecting fixing commit since ef39f76e4d24522699750afb641330cf1fb78c9b building syzkaller on d615901c739a765329b688494cee2f8e1b5037cb ensuring issue is reproducible on original commit ef39f76e4d24522699750afb641330cf1fb78c9b testing commit ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 73f3f7115cb99cd2e5717a1114d40573dbc22cc77bb6e8180962e1434e81f6e6 all runs: crashed: general protection fault in open_or_create_special_dir representative crash: general protection fault in open_or_create_special_dir, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1f87b3b22e7ccf1bd8273bc4bd344209051f21d81f84c1f8fe6558869b32fcc1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir representative crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir, 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=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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f6c3d53617b09a6ece62bf495770ae976f3aec2f017b3014f29e8f2528dcf472 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir representative crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir, 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 ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ea46884d33a0dd2ee03df33b63239cecc239bbcad19c956fb513cf9f8007066 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir representative crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b58ae439005bea1b9276082cf04a2f8de6d18f45ce69b4e897fa10e199055bd all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir representative crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: df4459f129ea4971a2276865736fd5490643ec0ac268586654abb2e1a9243a05 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir representative crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir, 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 ef39f76e4d24522699750afb641330cf1fb78c9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building ef39f76e4d24522699750afb641330cf1fb78c9b: 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD e02772c76d6fa54bd75b3961bb08c3a01122dbc9 testing commit e02772c76d6fa54bd75b3961bb08c3a01122dbc9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 37486811a5962f51e9004f9ef1bbdc5106ebae45c9400b214e58ae597f842471 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir representative crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h9m36.716117121s (build: 19m58.218092106s, test: 47m4.489579388s) crash still not fixed or there were kernel test errors commit msg: BACKPORT: firmware: arm_scmi: Queue in scmi layer for mailbox implementation crash: BUG: unable to handle kernel NULL pointer dereference in open_or_create_special_dir BUG: kernel NULL pointer dereference, address: 0000000000000038 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1129b6067 P4D 1129b6067 PUD 1129b2067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 402 Comm: syz-executor.4 Not tainted 6.1.99-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:d_really_is_positive include/linux/dcache.h:493 [inline] RIP: 0010:open_or_create_special_dir+0x30/0xb0 fs/incfs/vfs.c:480 Code: 41 56 41 55 41 54 53 49 89 d6 4c 8b 67 30 e8 57 7c ff ff 49 c7 c7 ea ff ff ff 48 85 c0 74 19 48 89 c3 48 3d 00 f0 ff ff 77 0b <48> 83 7b 30 00 74 15 41 c6 06 00 49 89 df 4c 89 f8 5b 41 5c 41 5d RSP: 0018:ffffc90000873d20 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000008 RCX: 0000000000000001 RDX: 00000000ffffff9c RSI: ffff888116174c00 RDI: 00000000ffffffff RBP: ffffc90000873d48 R08: 0000000000000000 R09: ffffc90000873bd0 R10: ffff88811645a3c0 R11: ffff888100041400 R12: ffff888109df5680 R13: ffffffff83117498 R14: ffffc90000873d5f R15: ffffffffffffffea FS: 00007f99b1a6d6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 0000000112987000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: incfs_mount_fs+0x197/0x360 fs/incfs/vfs.c:1890 legacy_get_tree+0x23/0x40 fs/fs_context.c:632 vfs_get_tree+0x1e/0x80 fs/super.c:1564 do_new_mount+0x149/0x360 fs/namespace.c:3051 path_mount+0x324/0x520 fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount+0x143/0x1b0 fs/namespace.c:3579 __x64_sys_mount+0x20/0x30 fs/namespace.c:3579 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 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: 0033:0x7f99b0c7dda9 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:00007f99b1a6d0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f99b0dac050 RCX: 00007f99b0c7dda9 RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 0000000020000080 RBP: 00007f99b0cca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f99b0dac050 R15: 00007fff9ee0fd08 Modules linked in: CR2: 0000000000000038 ---[ end trace 0000000000000000 ]--- RIP: 0010:d_really_is_positive include/linux/dcache.h:493 [inline] RIP: 0010:open_or_create_special_dir+0x30/0xb0 fs/incfs/vfs.c:480 Code: 41 56 41 55 41 54 53 49 89 d6 4c 8b 67 30 e8 57 7c ff ff 49 c7 c7 ea ff ff ff 48 85 c0 74 19 48 89 c3 48 3d 00 f0 ff ff 77 0b <48> 83 7b 30 00 74 15 41 c6 06 00 49 89 df 4c 89 f8 5b 41 5c 41 5d RSP: 0018:ffffc90000873d20 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000008 RCX: 0000000000000001 RDX: 00000000ffffff9c RSI: ffff888116174c00 RDI: 00000000ffffffff RBP: ffffc90000873d48 R08: 0000000000000000 R09: ffffc90000873bd0 R10: ffff88811645a3c0 R11: ffff888100041400 R12: ffff888109df5680 R13: ffffffff83117498 R14: ffffc90000873d5f R15: ffffffffffffffea FS: 00007f99b1a6d6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 0000000112987000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 41 56 push %r14 2: 41 55 push %r13 4: 41 54 push %r12 6: 53 push %rbx 7: 49 89 d6 mov %rdx,%r14 a: 4c 8b 67 30 mov 0x30(%rdi),%r12 e: e8 57 7c ff ff call 0xffff7c6a 13: 49 c7 c7 ea ff ff ff mov $0xffffffffffffffea,%r15 1a: 48 85 c0 test %rax,%rax 1d: 74 19 je 0x38 1f: 48 89 c3 mov %rax,%rbx 22: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 28: 77 0b ja 0x35 * 2a: 48 83 7b 30 00 cmpq $0x0,0x30(%rbx) <-- trapping instruction 2f: 74 15 je 0x46 31: 41 c6 06 00 movb $0x0,(%r14) 35: 49 89 df mov %rbx,%r15 38: 4c 89 f8 mov %r15,%rax 3b: 5b pop %rbx 3c: 41 5c pop %r12 3e: 41 5d pop %r13