[syzbot] linux-next boot error: general protection fault in add_mtd_device

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syzbot

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Jun 30, 2022, 5:32:21 AM6/30/22
to linux-...@vger.kernel.org, linu...@lists.infradead.org, linux...@vger.kernel.org, miquel...@bootlin.com, ric...@nod.at, s...@canb.auug.org.au, syzkall...@googlegroups.com, vign...@ti.com
Hello,

syzbot found the following issue on:

HEAD commit: 6cc11d2a1759 Add linux-next specific files for 20220630
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1640f850080000
kernel config: https://syzkaller.appspot.com/x/.config?x=54f75b620e3845dd
dashboard link: https://syzkaller.appspot.com/bug?extid=fe013f55a2814a9e8cfd
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fe013f...@syzkaller.appspotmail.com

Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240)
io scheduler mq-deadline registered
io scheduler kyber registered
io scheduler bfq registered
input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
ACPI: button: Power Button [PWRF]
input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
ACPI: button: Sleep Button [SLPF]
ACPI: \_SB_.LNKC: Enabled at IRQ 11
virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
ACPI: \_SB_.LNKD: Enabled at IRQ 10
virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
ACPI: \_SB_.LNKB: Enabled at IRQ 10
virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
N_HDLC line discipline registered with maxframe=4096
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A
Non-volatile memory driver v1.3
Linux agpgart interface v0.103
ACPI: bus type drm_connector registered
[drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0
[drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1
Console: switching to colour frame buffer device 128x48
platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
usbcore: registered new interface driver udl
brd: module loaded
loop: module loaded
zram: Added device: zram0
null_blk: disk nullb0 created
null_blk: module loaded
Guest personality initialized and is inactive
VMCI host device registered (name=vmci, major=10, minor=119)
Initialized host personality
usbcore: registered new interface driver rtsx_usb
usbcore: registered new interface driver viperboard
usbcore: registered new interface driver dln2
usbcore: registered new interface driver pn533_usb
nfcsim 0.2 initialized
usbcore: registered new interface driver port100
usbcore: registered new interface driver nfcmrvl
Loading iSCSI transport class v2.0-870.
scsi host0: Virtio SCSI HBA
st: Version 20160209, fixed bufsize 32768, s/g segs 256
Rounding down aligned max_sectors from 4294967295 to 4294967288
db_root: cannot open: /etc/target
slram: not enough parameters.
general protection fault, probably for non-canonical address 0xdffffc00000000ac: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000560-0x0000000000000567]
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.19.0-rc4-next-20220630-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2022
RIP: 0010:dev_of_node include/linux/device.h:862 [inline]
RIP: 0010:mtd_check_of_node drivers/mtd/mtdcore.c:563 [inline]
RIP: 0010:add_mtd_device+0xbc8/0x1520 drivers/mtd/mtdcore.c:721
Code: 48 81 fd 60 fe ff ff 0f 84 90 fd ff ff e8 b0 10 97 fc 48 8d bd 60 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 08 00 00 48 8b ad 60 05 00 00 48 85 ed 0f 84
RSP: 0000:ffffc90000067c98 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88801ebf2000 RCX: 0000000000000000
RDX: 00000000000000ac RSI: ffffffff84e3a650 RDI: 0000000000000560
RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff89c00000 R11: 0000000000000001 R12: ffff88801ebf2004
R13: ffff88801ebf2028 R14: 0000000000000000 R15: 0000000005a00000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000ba8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
mtd_device_parse_register+0x50c/0x850 drivers/mtd/mtdcore.c:1032
mtdram_init_device+0x291/0x350 drivers/mtd/devices/mtdram.c:146
init_mtdram+0xe5/0x177 drivers/mtd/devices/mtdram.c:171
do_one_initcall+0xfe/0x650 init/main.c:1300
do_initcall_level init/main.c:1375 [inline]
do_initcalls init/main.c:1391 [inline]
do_basic_setup init/main.c:1410 [inline]
kernel_init_freeable+0x6b1/0x73a init/main.c:1617
kernel_init+0x1a/0x1d0 init/main.c:1506
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dev_of_node include/linux/device.h:862 [inline]
RIP: 0010:mtd_check_of_node drivers/mtd/mtdcore.c:563 [inline]
RIP: 0010:add_mtd_device+0xbc8/0x1520 drivers/mtd/mtdcore.c:721
Code: 48 81 fd 60 fe ff ff 0f 84 90 fd ff ff e8 b0 10 97 fc 48 8d bd 60 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 08 00 00 48 8b ad 60 05 00 00 48 85 ed 0f 84
RSP: 0000:ffffc90000067c98 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88801ebf2000 RCX: 0000000000000000
RDX: 00000000000000ac RSI: ffffffff84e3a650 RDI: 0000000000000560
RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff89c00000 R11: 0000000000000001 R12: ffff88801ebf2004
R13: ffff88801ebf2028 R14: 0000000000000000 R15: 0000000005a00000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000ba8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 81 fd 60 fe ff ff cmp $0xfffffffffffffe60,%rbp
7: 0f 84 90 fd ff ff je 0xfffffd9d
d: e8 b0 10 97 fc callq 0xfc9710c2
12: 48 8d bd 60 05 00 00 lea 0x560(%rbp),%rdi
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 da 08 00 00 jne 0x90e
34: 48 8b ad 60 05 00 00 mov 0x560(%rbp),%rbp
3b: 48 85 ed test %rbp,%rbp
3e: 0f .byte 0xf
3f: 84 .byte 0x84


---
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syzbot

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Jul 7, 2022, 12:06:41 PM7/7/22
to Siddh Raman Pant, co...@siddh.me, linux-...@vger.kernel.org, linu...@lists.infradead.org, linux...@vger.kernel.org, miquel...@bootlin.com, ric...@nod.at, s...@canb.auug.org.au, syzkall...@googlegroups.com, vign...@ti.com
> #syz test linux-next master

"linux-next" does not look like a valid git repo address.

>

Siddh Raman Pant

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Jul 7, 2022, 12:07:03 PM7/7/22
to syzbot+fe013f...@syzkaller.appspotmail.com, linux-...@vger.kernel.org, linu...@lists.infradead.org, linux...@vger.kernel.org, miquel...@bootlin.com, ric...@nod.at, s...@canb.auug.org.au, syzkall...@googlegroups.com, vign...@ti.com
#syz test linux-next master

Siddh Raman Pant

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Jul 7, 2022, 12:10:31 PM7/7/22
to syzbot, linux-kernel, linux-mtd, linux-next, miquel.raynal, richard, sfr, syzkaller-bugs, vigneshr

syzbot

unread,
Jul 7, 2022, 12:28:14 PM7/7/22
to co...@siddh.me, linux-...@vger.kernel.org, linu...@lists.infradead.org, linux...@vger.kernel.org, miquel...@bootlin.com, ric...@nod.at, s...@canb.auug.org.au, syzkall...@googlegroups.com, vign...@ti.com
Hello,

syzbot tried to test the proposed patch but the build/boot failed:

6.6.0
[ 3.293811][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 3.296985][ T1] FS-Cache: Loaded
[ 3.299821][ T1] CacheFiles: Loaded
[ 3.301735][ T1] TOMOYO: 2.6.0
[ 3.303022][ T1] Mandatory Access Control activated.
[ 3.308387][ T1] AppArmor: AppArmor Filesystem Enabled
[ 3.310932][ T1] pnp: PnP ACPI init
[ 3.333081][ T1] pnp: PnP ACPI: found 7 devices
[ 3.387288][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 3.391662][ T1] NET: Registered PF_INET protocol family
[ 3.397452][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[ 3.412428][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 6, 294912 bytes, vmalloc)
[ 3.416351][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[ 3.421360][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc)
[ 3.430604][ T1] TCP bind hash table entries: 65536 (order: 10, 4718592 bytes, vmalloc hugepage)
[ 3.438876][ T1] TCP: Hash tables configured (established 65536 bind 65536)
[ 3.444254][ T1] MPTCP token hash table entries: 8192 (order: 7, 720896 bytes, vmalloc)
[ 3.450021][ T1] UDP hash table entries: 4096 (order: 7, 655360 bytes, vmalloc)
[ 3.455480][ T1] UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes, vmalloc)
[ 3.459868][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 3.464349][ T1] RPC: Registered named UNIX socket transport module.
[ 3.466551][ T1] RPC: Registered udp transport module.
[ 3.468052][ T1] RPC: Registered tcp transport module.
[ 3.469630][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 3.474445][ T1] NET: Registered PF_XDP protocol family
[ 3.476136][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 3.478533][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 3.480808][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 3.483102][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window]
[ 3.486449][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 3.488875][ T1] PCI: CLS 0 bytes, default 64
[ 3.490261][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 3.492502][ T1] software IO TLB: mapped [mem 0x00000000b5a00000-0x00000000b9a00000] (64MB)
[ 3.495480][ T1] ACPI: bus type thunderbolt registered
[ 3.509757][ T57] kworker/u4:1 (57) used greatest stack depth: 27256 bytes left
[ 3.511725][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 3.539645][ T1] kvm: already loaded vendor module 'kvm_intel'
[ 3.541703][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb700c3c76, max_idle_ns: 440795286388 ns
[ 3.545330][ T1] clocksource: Switched to clocksource tsc
[ 3.555572][ T62] kworker/u4:4 (62) used greatest stack depth: 26864 bytes left
[ 7.007347][ T1] Initialise system trusted keyrings
[ 7.010222][ T1] workingset: timestamp_bits=40 max_order=21 bucket_order=0
[ 7.053672][ T1] zbud: loaded
[ 7.062452][ T1] DLM installed
[ 7.071357][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 7.083415][ T1] NFS: Registering the id_resolver key type
[ 7.084569][ T1] Key type id_resolver registered
[ 7.085956][ T1] Key type id_legacy registered
[ 7.087430][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 7.088957][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 7.090898][ T1] Installing knfsd (copyright (C) 1996 ok...@monad.swb.de).
[ 7.099997][ T1] Key type cifs.spnego registered
[ 7.101124][ T1] Key type cifs.idmap registered
[ 7.102589][ T1] ntfs: driver 2.1.32 [Flags: R/W].
[ 7.104795][ T1] ntfs3: Max link count 4000
[ 7.105478][ T1] ntfs3: Enabled Linux POSIX ACLs support
[ 7.106598][ T1] ntfs3: Read-only LZX/Xpress compression included
[ 7.110177][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/
[ 7.112037][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
[ 7.117328][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
[ 7.119672][ T1] QNX4 filesystem 0.2.3 registered.
[ 7.121322][ T1] qnx6: QNX6 filesystem 1.0.0 registered.
[ 7.123668][ T1] fuse: init (API version 7.36)
[ 7.128698][ T1] orangefs_debugfs_init: called with debug mask: :none: :0:
[ 7.130627][ T1] orangefs_init: module version upstream loaded
[ 7.132582][ T1] JFS: nTxBlock = 8192, nTxLock = 65536
[ 7.151005][ T1] SGI XFS with ACLs, security attributes, realtime, quota, fatal assert, debug enabled
[ 7.165385][ T1] 9p: Installing v9fs 9p2000 file system support
[ 7.168114][ T1] NILFS version 2 loaded
[ 7.168946][ T1] befs: version: 0.9.3
[ 7.171224][ T1] ocfs2: Registered cluster interface o2cb
[ 7.172474][ T1] ocfs2: Registered cluster interface user
[ 7.174608][ T1] OCFS2 User DLM kernel interface loaded
[ 7.186651][ T1] gfs2: GFS2 installed
[ 7.200575][ T1] ceph: loaded (mds proto 32)
[ 7.214141][ T1] NET: Registered PF_ALG protocol family
[ 7.215457][ T1] xor: automatically using best checksumming function avx
[ 7.216575][ T1] async_tx: api initialized (async)
[ 7.217530][ T1] Key type asymmetric registered
[ 7.218239][ T1] Asymmetric key parser 'x509' registered
[ 7.219470][ T1] Asymmetric key parser 'pkcs8' registered
[ 7.220454][ T1] Key type pkcs7_test registered
[ 7.224877][ T1] alg: self-tests for CTR-KDF (hmac(sha256)) passed
[ 7.226248][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240)
[ 7.228234][ T1] io scheduler mq-deadline registered
[ 7.229517][ T1] io scheduler kyber registered
[ 7.231202][ T1] io scheduler bfq registered
[ 7.246749][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 7.259853][ T1] ACPI: button: Power Button [PWRF]
[ 7.262507][ T1] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
[ 7.265778][ T1] ACPI: button: Sleep Button [SLPF]
[ 7.292165][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11
[ 7.293783][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
[ 7.313174][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10
[ 7.314393][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[ 7.333582][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10
[ 7.334602][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[ 7.348953][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
[ 7.771530][ T1] N_HDLC line discipline registered with maxframe=4096
[ 7.772933][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 7.774539][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 7.783403][ T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 7.791265][ T1] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
[ 7.797093][ T1] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A
[ 7.809304][ T1] Non-volatile memory driver v1.3
[ 7.827944][ T1] Linux agpgart interface v0.103
[ 7.833603][ T1] ACPI: bus type drm_connector registered
[ 7.838434][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0
[ 7.845071][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1
[ 7.907391][ T1] Console: switching to colour frame buffer device 128x48
[ 7.925767][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
[ 7.927589][ T1] usbcore: registered new interface driver udl
[ 7.989754][ T1] brd: module loaded
[ 8.050181][ T1] loop: module loaded
[ 8.135078][ T1] zram: Added device: zram0
[ 8.143367][ T1] null_blk: disk nullb0 created
[ 8.144480][ T1] null_blk: module loaded
[ 8.145538][ T1] Guest personality initialized and is inactive
[ 8.147216][ T1] VMCI host device registered (name=vmci, major=10, minor=119)
[ 8.148573][ T1] Initialized host personality
[ 8.149563][ T1] usbcore: registered new interface driver rtsx_usb
[ 8.151595][ T1] usbcore: registered new interface driver viperboard
[ 8.153227][ T1] usbcore: registered new interface driver dln2
[ 8.154829][ T1] usbcore: registered new interface driver pn533_usb
[ 8.161056][ T1] nfcsim 0.2 initialized
[ 8.162049][ T1] usbcore: registered new interface driver port100
[ 8.163368][ T1] usbcore: registered new interface driver nfcmrvl
[ 8.167580][ T1] Loading iSCSI transport class v2.0-870.
[ 8.202542][ T1] scsi host0: Virtio SCSI HBA
[ 8.248257][ T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 8.251625][ T46] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6
[ 8.289244][ T1] Rounding down aligned max_sectors from 4294967295 to 4294967288
[ 8.291872][ T1] db_root: cannot open: /etc/target
[ 8.294506][ T1] slram: not enough parameters.
[ 8.301140][ T1] general protection fault, probably for non-canonical address 0xdffffc00000000ac: 0000 [#1] PREEMPT SMP KASAN
[ 8.303611][ T1] KASAN: null-ptr-deref in range [0x0000000000000560-0x0000000000000567]
[ 8.305651][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.19.0-rc5-next-20220707-syzkaller #0
[ 8.308417][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
[ 8.308417][ T1] RIP: 0010:add_mtd_device+0xbc8/0x1520
[ 8.308417][ T1] Code: 48 81 fd 60 fe ff ff 0f 84 90 fd ff ff e8 30 9a 95 fc 48 8d bd 60 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 08 00 00 48 8b ad 60 05 00 00 48 85 ed 0f 84
[ 8.308417][ T1] RSP: 0000:ffffc90000067c98 EFLAGS: 00010206
[ 8.308417][ T1] RAX: dffffc0000000000 RBX: ffff8881472e2000 RCX: 0000000000000000
[ 8.308417][ T1] RDX: 00000000000000ac RSI: ffffffff84e5ed10 RDI: 0000000000000560
[ 8.308417][ T1] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
[ 8.308417][ T1] R10: ffffffff89e00000 R11: 0000000000000000 R12: ffff8881472e2004
[ 8.308417][ T1] R13: ffff8881472e2028 R14: 0000000000000000 R15: 0000000005a00000
[ 8.308417][ T1] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
[ 8.308417][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.308417][ T1] CR2: 0000000000000000 CR3: 000000000bc8e000 CR4: 00000000003506e0
[ 8.308417][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8.308417][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8.308417][ T1] Call Trace:
[ 8.308417][ T1] <TASK>
[ 8.308417][ T1] ? del_mtd_partitions+0x50/0x50
[ 8.308417][ T1] ? lockdep_init_map_type+0x21a/0x7f0
[ 8.308417][ T1] ? mtd_erase+0x8e0/0x8e0
[ 8.308417][ T1] ? lockdep_init_map_type+0x21a/0x7f0
[ 8.308417][ T1] ? __raw_spin_lock_init+0x36/0x110
[ 8.308417][ T1] mtd_device_parse_register+0x50c/0x850
[ 8.308417][ T1] mtdram_init_device+0x291/0x350
[ 8.308417][ T1] ? init_phram+0x99/0x99
[ 8.308417][ T1] init_mtdram+0xe5/0x177
[ 8.308417][ T1] ? init_phram+0x99/0x99
[ 8.308417][ T1] do_one_initcall+0xfe/0x650
[ 8.308417][ T1] ? trace_event_raw_event_initcall_level+0x1f0/0x1f0
[ 8.308417][ T1] ? parameq+0x120/0x170
[ 8.308417][ T1] kernel_init_freeable+0x6b1/0x73a
[ 8.308417][ T1] ? rest_init+0x270/0x270
[ 8.308417][ T1] kernel_init+0x1a/0x1d0
[ 8.308417][ T1] ? rest_init+0x270/0x270
[ 8.308417][ T1] ret_from_fork+0x1f/0x30
[ 8.308417][ T1] </TASK>
[ 8.308417][ T1] Modules linked in:
[ 8.354639][ T1] ---[ end trace 0000000000000000 ]---
[ 8.356288][ T1] RIP: 0010:add_mtd_device+0xbc8/0x1520
[ 8.358068][ T1] Code: 48 81 fd 60 fe ff ff 0f 84 90 fd ff ff e8 30 9a 95 fc 48 8d bd 60 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 08 00 00 48 8b ad 60 05 00 00 48 85 ed 0f 84
[ 8.364455][ T1] RSP: 0000:ffffc90000067c98 EFLAGS: 00010206
[ 8.366307][ T1] RAX: dffffc0000000000 RBX: ffff8881472e2000 RCX: 0000000000000000
[ 8.368860][ T1] RDX: 00000000000000ac RSI: ffffffff84e5ed10 RDI: 0000000000000560
[ 8.371267][ T1] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
[ 8.373529][ T1] R10: ffffffff89e00000 R11: 0000000000000000 R12: ffff8881472e2004
[ 8.376204][ T1] R13: ffff8881472e2028 R14: 0000000000000000 R15: 0000000005a00000
[ 8.378489][ T1] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[ 8.381365][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.383439][ T1] CR2: ffff88823ffff000 CR3: 000000000bc8e000 CR4: 00000000003506f0
[ 8.385780][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8.388324][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8.390899][ T1] Kernel panic - not syncing: Fatal exception
[ 8.393182][ T1] Kernel Offset: disabled
[ 8.394024][ T1] Rebooting in 86400 seconds..


syzkaller build log:
go env (err=<nil>)
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/syzkaller/.cache/go-build"
GOENV="/syzkaller/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/syzkaller/jobs/linux/gopath/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/syzkaller/jobs/linux/gopath"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build360636327=/tmp/go-build -gno-record-gcc-switches"

git status (err=<nil>)
HEAD detached at bff65f44b
nothing to commit, working tree clean


go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=bff65f44b47bd73f56c3d6a5c3899de5f5775136 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220704-135716'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=bff65f44b47bd73f56c3d6a5c3899de5f5775136 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220704-135716'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=bff65f44b47bd73f56c3d6a5c3899de5f5775136 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220704-135716'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"bff65f44b47bd73f56c3d6a5c3899de5f5775136\"


Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=1521cd5c080000


Tested on:

commit: 75d7bf5e Add linux-next specific files for 20220707
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=12690a05d4f2fc33
dashboard link: https://syzkaller.appspot.com/bug?extid=fe013f55a2814a9e8cfd
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.

syzbot

unread,
Jul 10, 2022, 5:12:14 PM7/10/22
to co...@siddh.me, syzkall...@googlegroups.com
Hello,

syzbot tried to test the proposed patch but the build/boot failed:

1] CacheFiles: Loaded
[ 3.428137][ T1] TOMOYO: 2.6.0
[ 3.429277][ T1] Mandatory Access Control activated.
[ 3.434437][ T1] AppArmor: AppArmor Filesystem Enabled
[ 3.437248][ T1] pnp: PnP ACPI init
[ 3.458091][ T1] pnp: PnP ACPI: found 7 devices
[ 3.506613][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 3.513088][ T1] NET: Registered PF_INET protocol family
[ 3.518495][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[ 3.533280][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 6, 294912 bytes, vmalloc)
[ 3.537653][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[ 3.541495][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc)
[ 3.550376][ T1] TCP bind hash table entries: 65536 (order: 10, 4718592 bytes, vmalloc hugepage)
[ 3.558466][ T1] TCP: Hash tables configured (established 65536 bind 65536)
[ 3.564113][ T1] MPTCP token hash table entries: 8192 (order: 7, 720896 bytes, vmalloc)
[ 3.569719][ T1] UDP hash table entries: 4096 (order: 7, 655360 bytes, vmalloc)
[ 3.574783][ T1] UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes, vmalloc)
[ 3.579095][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 3.583350][ T1] RPC: Registered named UNIX socket transport module.
[ 3.585217][ T1] RPC: Registered udp transport module.
[ 3.586894][ T1] RPC: Registered tcp transport module.
[ 3.588724][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 3.593246][ T1] NET: Registered PF_XDP protocol family
[ 3.595199][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 3.597486][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 3.599356][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 3.601380][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window]
[ 3.604802][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 3.607080][ T1] PCI: CLS 0 bytes, default 64
[ 3.616888][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 3.619198][ T1] software IO TLB: mapped [mem 0x00000000b5a00000-0x00000000b9a00000] (64MB)
[ 3.621519][ T1] ACPI: bus type thunderbolt registered
[ 3.634300][ T56] kworker/u4:2 (56) used greatest stack depth: 27736 bytes left
[ 3.637565][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 3.682425][ T1] kvm: already loaded vendor module 'kvm_intel'
[ 3.684309][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb6f578070, max_idle_ns: 440795229043 ns
[ 3.689011][ T1] clocksource: Switched to clocksource tsc
[ 3.700976][ T64] kworker/u4:2 (64) used greatest stack depth: 26936 bytes left
[ 7.190762][ T1] Initialise system trusted keyrings
[ 7.195516][ T1] workingset: timestamp_bits=40 max_order=21 bucket_order=0
[ 7.236411][ T1] zbud: loaded
[ 7.246038][ T1] DLM installed
[ 7.254283][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 7.267095][ T1] NFS: Registering the id_resolver key type
[ 7.268965][ T1] Key type id_resolver registered
[ 7.270166][ T1] Key type id_legacy registered
[ 7.272469][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 7.274998][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 7.277500][ T1] Installing knfsd (copyright (C) 1996 ok...@monad.swb.de).
[ 7.289035][ T1] Key type cifs.spnego registered
[ 7.291377][ T1] Key type cifs.idmap registered
[ 7.294416][ T1] ntfs: driver 2.1.32 [Flags: R/W].
[ 7.297094][ T1] ntfs3: Max link count 4000
[ 7.298476][ T1] ntfs3: Enabled Linux POSIX ACLs support
[ 7.299931][ T1] ntfs3: Read-only LZX/Xpress compression included
[ 7.303652][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/
[ 7.305984][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
[ 7.312466][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
[ 7.314965][ T1] QNX4 filesystem 0.2.3 registered.
[ 7.316742][ T1] qnx6: QNX6 filesystem 1.0.0 registered.
[ 7.319545][ T1] fuse: init (API version 7.36)
[ 7.326453][ T1] orangefs_debugfs_init: called with debug mask: :none: :0:
[ 7.331237][ T1] orangefs_init: module version upstream loaded
[ 7.335416][ T1] JFS: nTxBlock = 8192, nTxLock = 65536
[ 7.354921][ T1] SGI XFS with ACLs, security attributes, realtime, quota, fatal assert, debug enabled
[ 7.371816][ T1] 9p: Installing v9fs 9p2000 file system support
[ 7.375601][ T1] NILFS version 2 loaded
[ 7.377105][ T1] befs: version: 0.9.3
[ 7.380399][ T1] ocfs2: Registered cluster interface o2cb
[ 7.384141][ T1] ocfs2: Registered cluster interface user
[ 7.386782][ T1] OCFS2 User DLM kernel interface loaded
[ 7.400826][ T1] gfs2: GFS2 installed
[ 7.415338][ T1] ceph: loaded (mds proto 32)
[ 7.430256][ T1] NET: Registered PF_ALG protocol family
[ 7.432250][ T1] xor: automatically using best checksumming function avx
[ 7.434559][ T1] async_tx: api initialized (async)
[ 7.435939][ T1] Key type asymmetric registered
[ 7.437501][ T1] Asymmetric key parser 'x509' registered
[ 7.439432][ T1] Asymmetric key parser 'pkcs8' registered
[ 7.441040][ T1] Key type pkcs7_test registered
[ 7.445929][ T1] alg: self-tests for CTR-KDF (hmac(sha256)) passed
[ 7.447849][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240)
[ 7.451214][ T1] io scheduler mq-deadline registered
[ 7.452704][ T1] io scheduler kyber registered
[ 7.455088][ T1] io scheduler bfq registered
[ 7.474253][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 7.488839][ T1] ACPI: button: Power Button [PWRF]
[ 7.491896][ T1] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
[ 7.495838][ T1] ACPI: button: Sleep Button [SLPF]
[ 7.523643][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11
[ 7.525712][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
[ 7.544251][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10
[ 7.545820][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[ 7.566202][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10
[ 7.569337][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[ 7.584689][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
[ 7.816577][ T442] kworker/u4:1 (442) used greatest stack depth: 26656 bytes left
[ 8.011186][ T1] N_HDLC line discipline registered with maxframe=4096
[ 8.013887][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 8.016807][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 8.024649][ T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 8.031441][ T1] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
[ 8.039847][ T1] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A
[ 8.053997][ T1] Non-volatile memory driver v1.3
[ 8.075832][ T1] Linux agpgart interface v0.103
[ 8.079751][ T1] ACPI: bus type drm_connector registered
[ 8.086385][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0
[ 8.095810][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1
[ 8.161008][ T1] Console: switching to colour frame buffer device 128x48
[ 8.179579][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
[ 8.182235][ T1] usbcore: registered new interface driver udl
[ 8.251356][ T1] brd: module loaded
[ 8.320480][ T1] loop: module loaded
[ 8.413963][ T1] zram: Added device: zram0
[ 8.422480][ T1] null_blk: disk nullb0 created
[ 8.423759][ T1] null_blk: module loaded
[ 8.425429][ T1] Guest personality initialized and is inactive
[ 8.427779][ T1] VMCI host device registered (name=vmci, major=10, minor=119)
[ 8.429999][ T1] Initialized host personality
[ 8.431573][ T1] usbcore: registered new interface driver rtsx_usb
[ 8.434075][ T1] usbcore: registered new interface driver viperboard
[ 8.436376][ T1] usbcore: registered new interface driver dln2
[ 8.438623][ T1] usbcore: registered new interface driver pn533_usb
[ 8.445696][ T1] nfcsim 0.2 initialized
[ 8.447372][ T1] usbcore: registered new interface driver port100
[ 8.449752][ T1] usbcore: registered new interface driver nfcmrvl
[ 8.454957][ T1] Loading iSCSI transport class v2.0-870.
[ 8.496313][ T1] scsi host0: Virtio SCSI HBA
[ 8.539792][ T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 8.544799][ T8] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6
[ 8.574653][ T1] Rounding down aligned max_sectors from 4294967295 to 4294967288
[ 8.578028][ T1] db_root: cannot open: /etc/target
[ 8.580266][ T1] slram: not enough parameters.
[ 8.585645][ T1] general protection fault, probably for non-canonical address 0xdffffc00000000ac: 0000 [#1] PREEMPT SMP KASAN
[ 8.587302][ T1] KASAN: null-ptr-deref in range [0x0000000000000560-0x0000000000000567]
[ 8.587302][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-rc5-next-20220708-syzkaller #0
[ 8.587302][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
[ 8.587302][ T1] RIP: 0010:add_mtd_device+0xbc8/0x1520
[ 8.587302][ T1] Code: 48 81 fd 60 fe ff ff 0f 84 90 fd ff ff e8 c0 67 96 fc 48 8d bd 60 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 08 00 00 48 8b ad 60 05 00 00 48 85 ed 0f 84
[ 8.587302][ T1] RSP: 0000:ffffc90000067c98 EFLAGS: 00010206
[ 8.587302][ T1] RAX: dffffc0000000000 RBX: ffff88801f6b1000 RCX: 0000000000000000
[ 8.587302][ T1] RDX: 00000000000000ac RSI: ffffffff84e445c0 RDI: 0000000000000560
[ 8.587302][ T1] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
[ 8.587302][ T1] R10: ffffffff89c00000 R11: 0000000000000000 R12: ffff88801f6b1004
[ 8.587302][ T1] R13: ffff88801f6b1028 R14: 0000000000000000 R15: 0000000005a00000
[ 8.587302][ T1] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[ 8.587302][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.587302][ T1] CR2: ffff88823ffff000 CR3: 000000000ba8e000 CR4: 00000000003506f0
[ 8.587302][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8.587302][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8.587302][ T1] Call Trace:
[ 8.587302][ T1] <TASK>
[ 8.587302][ T1] ? del_mtd_partitions+0x50/0x50
[ 8.587302][ T1] ? lockdep_init_map_type+0x21a/0x7f0
[ 8.587302][ T1] ? mtd_erase+0x8e0/0x8e0
[ 8.587302][ T1] ? lockdep_init_map_type+0x21a/0x7f0
[ 8.587302][ T1] ? __raw_spin_lock_init+0x36/0x110
[ 8.637362][ T1] mtd_device_parse_register+0x50c/0x850
[ 8.637362][ T1] mtdram_init_device+0x291/0x350
[ 8.637362][ T1] ? init_phram+0x99/0x99
[ 8.637362][ T1] init_mtdram+0xe5/0x177
[ 8.637362][ T1] ? init_phram+0x99/0x99
[ 8.637362][ T1] do_one_initcall+0xfe/0x650
[ 8.637362][ T1] ? trace_event_raw_event_initcall_level+0x1f0/0x1f0
[ 8.637362][ T1] ? parameq+0x130/0x170
[ 8.637362][ T1] kernel_init_freeable+0x6b1/0x73a
[ 8.637362][ T1] ? rest_init+0x270/0x270
[ 8.637362][ T1] kernel_init+0x1a/0x1d0
[ 8.637362][ T1] ? rest_init+0x270/0x270
[ 8.637362][ T1] ret_from_fork+0x1f/0x30
[ 8.637362][ T1] </TASK>
[ 8.637362][ T1] Modules linked in:
[ 8.659028][ C0] vkms_vblank_simulate: vblank timer overrun
[ 8.663768][ T1] ---[ end trace 0000000000000000 ]---
[ 8.665401][ T1] RIP: 0010:add_mtd_device+0xbc8/0x1520
[ 8.666903][ T1] Code: 48 81 fd 60 fe ff ff 0f 84 90 fd ff ff e8 c0 67 96 fc 48 8d bd 60 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 08 00 00 48 8b ad 60 05 00 00 48 85 ed 0f 84
[ 8.672820][ T1] RSP: 0000:ffffc90000067c98 EFLAGS: 00010206
[ 8.674402][ T1] RAX: dffffc0000000000 RBX: ffff88801f6b1000 RCX: 0000000000000000
[ 8.677066][ T1] RDX: 00000000000000ac RSI: ffffffff84e445c0 RDI: 0000000000000560
[ 8.679524][ T1] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
[ 8.681688][ T1] R10: ffffffff89c00000 R11: 0000000000000000 R12: ffff88801f6b1004
[ 8.683630][ T1] R13: ffff88801f6b1028 R14: 0000000000000000 R15: 0000000005a00000
[ 8.685737][ T1] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[ 8.688761][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.690796][ T1] CR2: ffff88823ffff000 CR3: 000000000ba8e000 CR4: 00000000003506f0
[ 8.693347][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8.695491][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8.697976][ T1] Kernel panic - not syncing: Fatal exception
[ 8.700132][ T1] Kernel Offset: disabled
[ 8.701337][ T1] Rebooting in 86400 seconds..
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3401877264=/tmp/go-build -gno-record-gcc-switches"

git status (err=<nil>)
HEAD detached at b5765a153
nothing to commit, working tree clean


go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=b5765a153856746a5e7b74ea11751342337b0370 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220708-150753'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=b5765a153856746a5e7b74ea11751342337b0370 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220708-150753'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=b5765a153856746a5e7b74ea11751342337b0370 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220708-150753'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"b5765a153856746a5e7b74ea11751342337b0370\"


Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=127c822c080000


Tested on:

commit: f2528c29 Add linux-next specific files for 20220708
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