ci2 starts bisection 2023-12-23 20:59:16.465352876 +0000 UTC m=+104959.789238437 bisecting fixing commit since 9d6ac9dc6ac8f786d299507125d8858873912103 building syzkaller on 4862372a57ee80af8186cd80f6c9c8f741a45e40 ensuring issue is reproducible on original commit 9d6ac9dc6ac8f786d299507125d8858873912103 testing commit 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: df1bec1cf1f682370461f06a678cf6a1d3519e26b9501d646eed78fffb5c1e52 all runs: crashed: general protection fault in fuse_atomic_open representative crash: general protection fault in fuse_atomic_open, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e4c8f5848d32ca36688e10e7ab6920f9ff50f0560edb6fa14d035f004a08d293 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open representative crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed kconfig minimization: base=5179 full=6485 leaves diff=250 split chunks (needed=false): <250> split chunk #0 of len 250 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f09b83af9a09c3eadb781ed0b7baf5cea37d6b1a474027e7f6af74f2fff8380c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open representative crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open, 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 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7befc4960ccbcf2cb4bdbc56116451334298b59ae28d4452b678b4bf870f9b48 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open representative crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open, 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 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b63370b386296b66774491a31be4d6d4132ef2934a960913a96d7d0fef244b01 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open representative crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5fa5b876d32b050ee6c8c97db4db2aa607d2c6e53fb53f052a160b87d2e736e0 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open representative crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open, 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 9d6ac9dc6ac8f786d299507125d8858873912103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 9d6ac9dc6ac8f786d299507125d8858873912103: net/socket.c:1225: undefined reference to `wext_handle_ioctl' net/socket.c:3420: 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 50 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_MBIM 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_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 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 401a2769d99066952f3bfb73a8ce6b0269bc04d7 testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 344e4ef6ec2f6b200072dd113b7e6c0b4d3fa66a6703da45352da8b725d9b5d4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open representative crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 46m15.145323998s (build: 22m4.24759162s, test: 20m56.248683173s) crash still not fixed or there were kernel test errors commit msg: UPSTREAM: dm verity: don't perform FEC for failed readahead IO crash: BUG: unable to handle kernel NULL pointer dereference in fuse_atomic_open BUG: kernel NULL pointer dereference, address: 0000000000000048 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10cf0d067 P4D 10cf0d067 PUD 10ccc4067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 364 Comm: syz-executor.0 Not tainted 6.1.57-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:d_really_is_positive include/linux/dcache.h:493 [inline] RIP: 0010:fuse_atomic_open+0x8c/0x140 fs/fuse/dir.c:869 Code: ff ff 49 89 c4 48 3d 01 f0 ff ff 72 05 45 89 e6 eb 2d 4d 85 e4 4d 0f 45 fc 4c 89 f2 48 8b 4d d0 44 8b 45 cc 41 f6 c5 40 74 07 <49> 83 7f 30 00 74 20 48 89 d7 4c 89 e6 e8 e2 be e9 ff 41 89 c6 44 RSP: 0018:ffffc90000817c78 EFLAGS: 00010202 RAX: 0000000000000018 RBX: ffff88810bfe5680 RCX: ffff888100880800 RDX: ffff88810cc51280 RSI: 0000000000000000 RDI: ffff88810bfe5680 RBP: ffffc90000817cb0 R08: 0000000000008000 R09: ffffffff815408dc R10: ffff88810bb6f560 R11: ffff888100041400 R12: 0000000000000018 R13: 0000000000008241 R14: ffff88810cc51280 R15: 0000000000000018 FS: 00007fed766286c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000048 CR3: 000000010ce4c000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: atomic_open fs/namei.c:3276 [inline] lookup_open fs/namei.c:3384 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x3e2/0xb60 fs/namei.c:3711 do_filp_open+0xad/0x150 fs/namei.c:3741 do_sys_openat2+0x8e/0x240 fs/open.c:1341 do_sys_open fs/open.c:1357 [inline] __do_sys_creat fs/open.c:1433 [inline] __se_sys_creat fs/open.c:1427 [inline] __x64_sys_creat+0x44/0x60 fs/open.c:1427 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fed7587cae9 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:00007fed766280c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fed7599c050 RCX: 00007fed7587cae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007fed758c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fed7599c050 R15: 00007ffe5ddc34e8 Modules linked in: CR2: 0000000000000048 ---[ end trace 0000000000000000 ]--- RIP: 0010:d_really_is_positive include/linux/dcache.h:493 [inline] RIP: 0010:fuse_atomic_open+0x8c/0x140 fs/fuse/dir.c:869 Code: ff ff 49 89 c4 48 3d 01 f0 ff ff 72 05 45 89 e6 eb 2d 4d 85 e4 4d 0f 45 fc 4c 89 f2 48 8b 4d d0 44 8b 45 cc 41 f6 c5 40 74 07 <49> 83 7f 30 00 74 20 48 89 d7 4c 89 e6 e8 e2 be e9 ff 41 89 c6 44 RSP: 0018:ffffc90000817c78 EFLAGS: 00010202 RAX: 0000000000000018 RBX: ffff88810bfe5680 RCX: ffff888100880800 RDX: ffff88810cc51280 RSI: 0000000000000000 RDI: ffff88810bfe5680 RBP: ffffc90000817cb0 R08: 0000000000008000 R09: ffffffff815408dc R10: ffff88810bb6f560 R11: ffff888100041400 R12: 0000000000000018 R13: 0000000000008241 R14: ffff88810cc51280 R15: 0000000000000018 FS: 00007fed766286c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000048 CR3: 000000010ce4c000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 49 89 c4 mov %rax,%r12 3: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 9: 72 05 jb 0x10 b: 45 89 e6 mov %r12d,%r14d e: eb 2d jmp 0x3d 10: 4d 85 e4 test %r12,%r12 13: 4d 0f 45 fc cmovne %r12,%r15 17: 4c 89 f2 mov %r14,%rdx 1a: 48 8b 4d d0 mov -0x30(%rbp),%rcx 1e: 44 8b 45 cc mov -0x34(%rbp),%r8d 22: 41 f6 c5 40 test $0x40,%r13b 26: 74 07 je 0x2f * 28: 49 83 7f 30 00 cmpq $0x0,0x30(%r15) <-- trapping instruction 2d: 74 20 je 0x4f 2f: 48 89 d7 mov %rdx,%rdi 32: 4c 89 e6 mov %r12,%rsi 35: e8 e2 be e9 ff call 0xffe9bf1c 3a: 41 89 c6 mov %eax,%r14d 3d: 44 rex.R