syzbot


upstream boot error: general protection fault in __proc_create

Status: internal: reported on 2022/08/14 04:33
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 9993a4f989c7 virtio: Revert "virtio: find_vqs() add arg sizes"
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-riscv64]
First crash: 168d, last: 168d

Sample crash report:
usbcore: registered new interface driver MOSCHIP usb-ethernet driver
usbcore: registered new interface driver int51x1
usbcore: registered new interface driver cdc_phonet
usbcore: registered new interface driver kalmia
usbcore: registered new interface driver ipheth
usbcore: registered new interface driver sierra_net
usbcore: registered new interface driver cx82310_eth
usbcore: registered new interface driver cdc_ncm
usbcore: registered new interface driver huawei_cdc_ncm
usbcore: registered new interface driver lg-vl600
usbcore: registered new interface driver qmi_wwan
usbcore: registered new interface driver cdc_mbim
usbcore: registered new interface driver ch9200
usbcore: registered new interface driver r8153_ecm
VFIO - User Level meta-driver version: 0.3
aoe: AoE v85 initialised.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
ehci-platform: EHCI generic platform driver
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
ohci-pci: OHCI PCI platform driver
ohci-platform: OHCI generic platform driver
uhci_hcd: USB Universal Host Controller Interface driver
driver u132_hcd
fotg210_hcd: FOTG210 Host Controller (EHCI) Driver
Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after
SPI driver max3421-hcd has no spi_device_id for maxim,max3421
usbcore: registered new interface driver cdc_acm
cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
usbcore: registered new interface driver usblp
usbcore: registered new interface driver cdc_wdm
usbcore: registered new interface driver usbtmc
usbcore: registered new interface driver uas
usbcore: registered new interface driver usb-storage
usbcore: registered new interface driver ums-alauda
usbcore: registered new interface driver ums-cypress
usbcore: registered new interface driver ums-datafab
usbcore: registered new interface driver ums_eneub6250
usbcore: registered new interface driver ums-freecom
usbcore: registered new interface driver ums-isd200
usbcore: registered new interface driver ums-jumpshot
usbcore: registered new interface driver ums-karma
usbcore: registered new interface driver ums-onetouch
usbcore: registered new interface driver ums-realtek
usbcore: registered new interface driver ums-sddr09
usbcore: registered new interface driver ums-sddr55
usbcore: registered new interface driver ums-usbat
usbcore: registered new interface driver mdc800
mdc800: v0.7.5 (30/10/2000):USB Driver for Mustek MDC800 Digital Camera
usbcore: registered new interface driver microtekX6
general protection fault, probably for non-canonical address 0xffff000000000080: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xfff8200000000400-0xfff8200000000407]
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-syzkaller-14264-gf6eb0fed6a39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:slab_alloc mm/slub.c:3251 [inline]
RIP: 0010:__kmem_cache_alloc_lru mm/slub.c:3258 [inline]
RIP: 0010:kmem_cache_alloc+0x12d/0x310 mm/slub.c:3268
Code: 84 1c 01 00 00 48 83 78 10 00 0f 84 11 01 00 00 49 8b 3f 40 f6 c7 0f 0f 85 e3 01 00 00 45 84 c0 0f 84 dc 01 00 00 41 8b 47 28 <49> 8b 5c 05 00 48 8d 4a 08 4c 89 e8 65 48 0f c7 0f 0f 94 c0 a8 01
RSP: 0000:ffffc90000067960 EFLAGS: 00010202
RAX: 0000000000000080 RBX: 0000000000000dc0 RCX: 0000000000000000
RDX: 0000000000000998 RSI: 0000000000000dc0 RDI: 00000000000411f0
RBP: ffffffff8211e350 R08: dffffc0000000001 R09: fffffbfff1c4ad8e
R10: fffffbfff1c4ad8e R11: 1ffffffff1c4ad8d R12: ffffc90000067ae0
R13: ffff000000000000 R14: ffffffff8211e350 R15: ffff888012302780
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000ca8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kmem_cache_zalloc include/linux/slab.h:723 [inline]
 __proc_create+0x5c0/0xb80 fs/proc/generic.c:426
 proc_create_reg fs/proc/generic.c:553 [inline]
 proc_create_single_data+0x123/0x240 fs/proc/generic.c:653
 proc_tty_register_driver+0xdf/0x110 fs/proc/proc_tty.c:139
 tty_register_driver+0x89a/0xc60 drivers/tty/tty_io.c:3460
 usb_serial_init+0x1b8/0x32c drivers/usb/serial/usb-serial.c:1349
 do_one_initcall+0xbd/0x2b0 init/main.c:1296
 do_initcall_level+0x168/0x218 init/main.c:1369
 do_initcalls+0x4b/0x8c init/main.c:1385
 kernel_init_freeable+0x43a/0x5c3 init/main.c:1611
 kernel_init+0x19/0x2b0 init/main.c:1500
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:slab_alloc mm/slub.c:3251 [inline]
RIP: 0010:__kmem_cache_alloc_lru mm/slub.c:3258 [inline]
RIP: 0010:kmem_cache_alloc+0x12d/0x310 mm/slub.c:3268
Code: 84 1c 01 00 00 48 83 78 10 00 0f 84 11 01 00 00 49 8b 3f 40 f6 c7 0f 0f 85 e3 01 00 00 45 84 c0 0f 84 dc 01 00 00 41 8b 47 28 <49> 8b 5c 05 00 48 8d 4a 08 4c 89 e8 65 48 0f c7 0f 0f 94 c0 a8 01
RSP: 0000:ffffc90000067960 EFLAGS: 00010202
RAX: 0000000000000080 RBX: 0000000000000dc0 RCX: 0000000000000000
RDX: 0000000000000998 RSI: 0000000000000dc0 RDI: 00000000000411f0
RBP: ffffffff8211e350 R08: dffffc0000000001 R09: fffffbfff1c4ad8e
R10: fffffbfff1c4ad8e R11: 1ffffffff1c4ad8d R12: ffffc90000067ae0
R13: ffff000000000000 R14: ffffffff8211e350 R15: ffff888012302780
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000ca8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	84 1c 01             	test   %bl,(%rcx,%rax,1)
   3:	00 00                	add    %al,(%rax)
   5:	48 83 78 10 00       	cmpq   $0x0,0x10(%rax)
   a:	0f 84 11 01 00 00    	je     0x121
  10:	49 8b 3f             	mov    (%r15),%rdi
  13:	40 f6 c7 0f          	test   $0xf,%dil
  17:	0f 85 e3 01 00 00    	jne    0x200
  1d:	45 84 c0             	test   %r8b,%r8b
  20:	0f 84 dc 01 00 00    	je     0x202
  26:	41 8b 47 28          	mov    0x28(%r15),%eax
* 2a:	49 8b 5c 05 00       	mov    0x0(%r13,%rax,1),%rbx <-- trapping instruction
  2f:	48 8d 4a 08          	lea    0x8(%rdx),%rcx
  33:	4c 89 e8             	mov    %r13,%rax
  36:	65 48 0f c7 0f       	cmpxchg16b %gs:(%rdi)
  3b:	0f 94 c0             	sete   %al
  3e:	a8 01                	test   $0x1,%al

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce-smack-root 2022/08/14 04:32 upstream f6eb0fed6a39 8dfcaa3d .config console log report upstream boot error: general protection fault in __proc_create
* Struck through repros no longer work on HEAD.