ci2 starts bisection 2024-12-03 05:16:26.187902595 +0000 UTC m=+14590.473366543 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: 9a66b6e3291bb7b9da4a7a71603d22afaa3f7c5b25b62cbe6427aaca241bede6 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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], 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: ccae09bb4c8b11078bf34ee14139ae6676ed4cefb63dff3e74f03a784275a2de 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], 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: 28ef705af1b3f6ed15162b22ad1e697520ee0046ba31775734acdcbdc7e6d63c 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], 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: 938ad296d4ab60f6302edd8642a2a5a3bb26cca150609733dd47e7b87dd0ddee 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 [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: 3693ca6fbc36121002d392e93f4f522466f460c2b19e3f0da831a2f9a4b00d88 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 [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 kernel signature: a9bb64461d2239ee624c71e211b3f126200ac7d055497511d1a2dac4d81c8b24 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD 997d1e6f69f19132c03f29612f28aefbc2566f39 testing commit 997d1e6f69f19132c03f29612f28aefbc2566f39 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 825000890b34760ef11d40a4522307a3954e2d64b4741f9d61fdb5a332d31646 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: 41m8.799739177s (build: 17m41.569376677s, test: 21m16.49615374s) crash still not fixed or there were kernel test errors commit msg: FROMGIT: pinmux: Use sequential access to access desc->pinmux data 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 110496067 P4D 110496067 PUD 110498067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 412 Comm: syz-executor.0 Not tainted 6.1.115-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:ffffc900008bbd20 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000008 RCX: 0000000000000001 RDX: 00000000ffffff9c RSI: ffff8881174c0000 RDI: 00000000ffffffff RBP: ffffc900008bbd48 R08: 0000000000000000 R09: ffffc900008bbbd0 R10: ffff888100041400 R11: ffff88811771cfa0 R12: ffff88810c3c7480 R13: ffffffff83117598 R14: ffffc900008bbd5f R15: ffffffffffffffea FS: 00007f6242fde6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 00000001104a4000 CR4: 00000000003506b0 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:1575 do_new_mount+0x149/0x360 fs/namespace.c:3056 path_mount+0x324/0x520 fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x143/0x1b0 fs/namespace.c:3584 __x64_sys_mount+0x20/0x30 fs/namespace.c:3584 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: 0033:0x7f624347dda9 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:00007f6242fde0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f62435ac050 RCX: 00007f624347dda9 RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 0000000020000080 RBP: 00007f62434ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f62435ac050 R15: 00007ffca0472688 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:ffffc900008bbd20 EFLAGS: 00010203 RAX: 0000000000000008 RBX: 0000000000000008 RCX: 0000000000000001 RDX: 00000000ffffff9c RSI: ffff8881174c0000 RDI: 00000000ffffffff RBP: ffffc900008bbd48 R08: 0000000000000000 R09: ffffc900008bbbd0 R10: ffff888100041400 R11: ffff88811771cfa0 R12: ffff88810c3c7480 R13: ffffffff83117598 R14: ffffc900008bbd5f R15: ffffffffffffffea FS: 00007f6242fde6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 00000001104a4000 CR4: 00000000003506b0 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