ci2 starts bisection 2023-08-12 13:19:47.721032579 +0000 UTC m=+81081.419601500 bisecting fixing commit since 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 testing commit 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ce272018b0ac0284d7cffac88301adc65cdd1ae3688468f1b66e7943e3f99ae run #0: crashed: general protection fault in ext4_release_dquot run #1: crashed: general protection fault in ext4_acquire_dquot run #2: crashed: general protection fault in ext4_acquire_dquot run #3: crashed: general protection fault in ext4_acquire_dquot run #4: crashed: general protection fault in ext4_acquire_dquot run #5: crashed: general protection fault in ext4_acquire_dquot run #6: crashed: general protection fault in ext4_acquire_dquot run #7: crashed: general protection fault in ext4_acquire_dquot run #8: crashed: general protection fault in ext4_acquire_dquot run #9: crashed: general protection fault in ext4_acquire_dquot run #10: crashed: general protection fault in ext4_acquire_dquot run #11: crashed: general protection fault in ext4_acquire_dquot run #12: crashed: general protection fault in ext4_acquire_dquot run #13: crashed: general protection fault in ext4_acquire_dquot run #14: crashed: general protection fault in ext4_acquire_dquot run #15: crashed: general protection fault in ext4_acquire_dquot run #16: crashed: general protection fault in ext4_acquire_dquot run #17: crashed: general protection fault in ext4_acquire_dquot run #18: crashed: general protection fault in ext4_acquire_dquot run #19: basic kernel testing failed: lost connection to test machine representative crash: general protection fault in ext4_release_dquot, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 099c6d3aea64767bd683426a5a0a7614d432035b90e14a446b8785d4f5ab5a2f run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_release_dquot run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_release_dquot representative crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=5179 full=6520 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 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b38b698acf7a75454d94ed1c38758276d315d52570035de9ab610d4968a05dfc all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot representative crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e268db1017cbbab0ef06287fb4011fc70b54bce44ef241ed1c9ce38d77a19350 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot representative crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot, 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 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c951571da315fb659603463ddfd44a41264a4d27a076696919937516a34e30f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot representative crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot, 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 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d491805732977a07d60f2ab4bb2d6d23672976ed67ece00b858ea32d3dc79974 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_release_dquot run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_release_dquot run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot representative crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 86a6bbdc8ffe588059b2cef842f78fa44a6fefb0: 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 d7dacaa439c7cd0f3e2130e90ac8f2b91370d3da testing commit d7dacaa439c7cd0f3e2130e90ac8f2b91370d3da gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc919c8a6ddf199317ba25c4ee1e6e46d2160ebce4d137b8fcba8b86a6d7a3d0 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_release_dquot run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_release_dquot run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot representative crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h15m13.665628572s (build: 48m29.508727685s, test: 22m4.79183913s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: UPSTREAM: USB: Gadget: core: Help prevent panic during UVC unconfigure crash: BUG: unable to handle kernel NULL pointer dereference in ext4_acquire_dquot BUG: kernel NULL pointer dereference, address: 0000000000000028 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1168a6067 P4D 1168a6067 PUD 116983067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 505 Comm: syz-executor.3 Not tainted 6.1.25-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:ext4_acquire_dquot+0x46/0xb0 fs/ext4/super.c:6738 Code: 48 8b 89 c8 03 00 00 f6 41 7a 04 48 8b 51 68 75 08 31 c9 f6 42 65 01 74 11 f6 42 60 40 ba 19 00 00 00 b9 49 00 00 00 0f 44 ca <48> 8b 78 28 48 8b 87 c8 03 00 00 44 8b 48 50 41 c1 e1 03 be 53 1a RSP: 0018:ffffc90000997a98 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff88810d8e7e00 RCX: 0000000000000049 RDX: 0000000000000019 RSI: ffff888116229300 RDI: ffff88810d8e7e00 RBP: ffffc90000997aa8 R08: ffff888116421800 R09: 0000000000000402 R10: ffff88810b324300 R11: ffff888100041600 R12: 0000000000000000 R13: ffff888116421800 R14: ffff88810d8e7e00 R15: ffff88810d8e7e40 FS: 00007fab5763f6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000028 CR3: 00000001169ff000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dqget+0x34a/0x4a0 fs/quota/dquot.c:914 __dquot_initialize+0x11c/0x3f0 fs/quota/dquot.c:1492 dquot_initialize fs/quota/dquot.c:1550 [inline] dquot_file_open+0x2b/0x30 fs/quota/dquot.c:2181 ext4_file_open+0xb0/0x280 fs/ext4/file.c:893 do_dentry_open+0x253/0x3d0 fs/open.c:884 vfs_open+0x28/0x30 fs/open.c:1015 do_open fs/namei.c:3557 [inline] path_openat+0x9e0/0xb60 fs/namei.c:3714 do_filp_open+0xad/0x150 fs/namei.c:3741 do_sys_openat2+0x8e/0x240 fs/open.c:1333 do_sys_open fs/open.c:1349 [inline] __do_sys_openat fs/open.c:1365 [inline] __se_sys_openat fs/open.c:1360 [inline] __x64_sys_openat+0x79/0xa0 fs/open.c:1360 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: 0033:0x7fab5fe7c959 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:00007fab5763f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fab5ff9c120 RCX: 00007fab5fe7c959 RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007fab5fed8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fab5ff9c120 R15: 00007ffed8cc1618 Modules linked in: CR2: 0000000000000028 ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_acquire_dquot+0x46/0xb0 fs/ext4/super.c:6738 Code: 48 8b 89 c8 03 00 00 f6 41 7a 04 48 8b 51 68 75 08 31 c9 f6 42 65 01 74 11 f6 42 60 40 ba 19 00 00 00 b9 49 00 00 00 0f 44 ca <48> 8b 78 28 48 8b 87 c8 03 00 00 44 8b 48 50 41 c1 e1 03 be 53 1a RSP: 0018:ffffc90000997a98 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff88810d8e7e00 RCX: 0000000000000049 RDX: 0000000000000019 RSI: ffff888116229300 RDI: ffff88810d8e7e00 RBP: ffffc90000997aa8 R08: ffff888116421800 R09: 0000000000000402 R10: ffff88810b324300 R11: ffff888100041600 R12: 0000000000000000 R13: ffff888116421800 R14: ffff88810d8e7e00 R15: ffff88810d8e7e40 FS: 00007fab5763f6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000028 CR3: 00000001169ff000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 8b 89 c8 03 00 00 mov 0x3c8(%rcx),%rcx 7: f6 41 7a 04 testb $0x4,0x7a(%rcx) b: 48 8b 51 68 mov 0x68(%rcx),%rdx f: 75 08 jne 0x19 11: 31 c9 xor %ecx,%ecx 13: f6 42 65 01 testb $0x1,0x65(%rdx) 17: 74 11 je 0x2a 19: f6 42 60 40 testb $0x40,0x60(%rdx) 1d: ba 19 00 00 00 mov $0x19,%edx 22: b9 49 00 00 00 mov $0x49,%ecx 27: 0f 44 ca cmove %edx,%ecx * 2a: 48 8b 78 28 mov 0x28(%rax),%rdi <-- trapping instruction 2e: 48 8b 87 c8 03 00 00 mov 0x3c8(%rdi),%rax 35: 44 8b 48 50 mov 0x50(%rax),%r9d 39: 41 c1 e1 03 shl $0x3,%r9d 3d: be .byte 0xbe 3e: 53 push %rbx 3f: 1a .byte 0x1a