upstream boot error: WARNING in __context_tracking

upstream boot error: WARNING in __context_tracking_enter
Status: upstream: reported on 2021/03/19 09:44
Reported-by: syzbot+f09a12b2c77bfbbf51bd@syzkaller.appspotmail.com
First crash: 212d, last: 14h22m

Sample crash report:

Registered RDS/tcp transport
NET: Registered PF_SMC protocol family
9pnet: Installing 9P2000 support
Key type dns_resolver registered
Key type ceph registered
libceph: loaded (mon/osd proto 15/24)
NET: Registered PF_VSOCK protocol family
Registering SWP/SWPB emulation handler
registered taskstats version 1
Loading compiled-in X.509 certificates
Loaded X.509 cert 'Build time autogenerated kernel key: f850c787ad998c396ae089c083b940ff0a9abb77'
zswap: loaded using pool lzo/zbud
Key type ._fscrypt registered
Key type .fscrypt registered
Key type fscrypt-provisioning registered
Key type big_key registered
Key type encrypted registered
ima: No TPM chip found, activating TPM-bypass!
Loading compiled-in module X.509 certificates
Loaded X.509 cert 'Build time autogenerated kernel key: f850c787ad998c396ae089c083b940ff0a9abb77'
ima: Allocated hash algorithm: sha256
ima: No architecture policies found
evm: Initialising EVM extended attributes:
evm: security.selinux
evm: security.SMACK64 (disabled)
evm: security.SMACK64EXEC (disabled)
evm: security.SMACK64TRANSMUTE (disabled)
evm: security.SMACK64MMAP (disabled)
evm: security.apparmor (disabled)
evm: security.ima
evm: security.capability
evm: HMAC attrs: 0x1
printk: console [netcon0] enabled
netconsole: network logging started
gtp: GTP module loaded (pdp ctx size 64 bytes)
ALSA device list:
  #0: Dummy 1
  #1: Loopback 1
  #2: Virtual MIDI Card 1
  #3: ARM AC'97 Interface PL041 rev0 at 0x1c040000, irq 36
uart-pl011 1c090000.serial: no DMA platform data
md: Skipping autodetection of RAID arrays. (raid=autodetect will force)
EXT4-fs (vda): mounted filesystem without journal. Opts: (null). Quota mode: none.
VFS: Mounted root (ext4 filesystem) readonly on device 253:0.
devtmpfs: mounted
Freeing unused kernel image (initmem) memory: 2048K
Failed to set sysctl parameter 'vm.nr_hugepages=4': parameter not found
Failed to set sysctl parameter 'vm.nr_overcommit_hugepages=4': parameter not found
Run /sbin/init as init process
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at include/linux/seqlock.h:271 __seqprop_assert include/linux/seqlock.h:271 [inline]
WARNING: CPU: 0 PID: 1 at include/linux/seqlock.h:271 __seqprop_assert.constprop.0+0xf0/0x11c include/linux/seqlock.h:269
Modules linked in:
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1 Comm: init Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<8188b9a8>] (dump_backtrace) from [<8188bd64>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:237)
 r7:81f694dc r6:00000080 r5:81f7b93c r4:60000193
[<8188bd4c>] (show_stack) from [<818931a4>] (__dump_stack lib/dump_stack.c:88 [inline])
[<8188bd4c>] (show_stack) from [<818931a4>] (dump_stack_lvl+0x70/0x98 lib/dump_stack.c:106)
[<81893134>] (dump_stack_lvl) from [<818931e4>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r7:81f694dc r6:82639954 r5:00000000 r4:82878098
[<818931cc>] (dump_stack) from [<8188c894>] (panic+0x11c/0x35c kernel/panic.c:232)
[<8188c778>] (panic) from [<80244bf0>] (__warn+0xb0/0x164 kernel/panic.c:603)
 r3:82622608 r2:00000000 r1:838d7cc0 r0:81f694dc
 r7:0000010f
[<80244b40>] (__warn) from [<8188cb3c>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:626)
 r7:8028e748 r6:0000010f r5:81f61868 r4:00000000
[<8188cad8>] (warn_slowpath_fmt) from [<8028e748>] (__seqprop_assert include/linux/seqlock.h:271 [inline])
[<8188cad8>] (warn_slowpath_fmt) from [<8028e748>] (__seqprop_assert.constprop.0+0xf0/0x11c include/linux/seqlock.h:269)
 r8:00000000 r7:82622614 r6:838e0000 r5:818a70f8 r4:00000001
[<8028e658>] (__seqprop_assert.constprop.0) from [<80290d70>] (vtime_user_enter+0x20/0x8c kernel/sched/cputime.c:709)
 r5:818a70f8 r4:838e0000
[<80290d50>] (vtime_user_enter) from [<818a70f8>] (__context_tracking_enter+0x13c/0x31c kernel/context_tracking.c:82)
 r7:82622614 r6:824a8d08 r5:ffffe000 r4:00000001
[<818a6fbc>] (__context_tracking_enter) from [<804243d8>] (context_tracking_enter kernel/context_tracking.c:122 [inline])
[<818a6fbc>] (__context_tracking_enter) from [<804243d8>] (context_tracking_enter+0x54/0x84 kernel/context_tracking.c:106)
 r7:00000000 r6:00000000 r5:60000193 r4:00000001
[<80424384>] (context_tracking_enter) from [<80424424>] (user_enter include/linux/context_tracking.h:28 [inline])
[<80424384>] (context_tracking_enter) from [<80424424>] (context_tracking_user_enter+0x1c/0x20 kernel/context_tracking.c:130)
 r5:818a76fc r4:00000000
[<80424408>] (context_tracking_user_enter) from [<802000b4>] (no_work_pending+0x8/0x38)
Exception stack(0x838d7fb0 to 0x838d7ff8)
7fa0:                                     ???????? ???????? ???????? ????????
7fc0: ???????? ???????? ???????? ???????? ???????? ???????? ???????? ????????
7fe0: ???????? ???????? ???????? ???????? ???????? ????????
Rebooting in 86400 seconds..

Crashes (1581):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Title
ci-qemu2-arm32	2021/10/16 19:06	upstream	d999ade1cc86	0c5d9412	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/16 18:16	upstream	6985c40ab6c5	0c5d9412	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/16 17:06	upstream	304040fb4909	0c5d9412	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/15 19:15	upstream	8fe31e0995f0	0c5d9412	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/15 15:25	upstream	8fe31e0995f0	aab7690b	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/15 07:13	upstream	ec681c53f8d2	aab7690b	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/14 23:23	upstream	ec681c53f8d2	7aa5fe41	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/14 19:12	upstream	26d657410983	7aa5fe41	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/14 15:09	upstream	26d657410983	5462d470	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/13 23:50	upstream	348949d9a444	5462d470	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/13 15:20	upstream	348949d9a444	2184365e	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/13 11:49	upstream	f4d0cc426f77	2184365e	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/12 23:46	upstream	f4d0cc426f77	08362356	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/12 19:51	upstream	f4d0cc426f77	f5acd036	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/12 19:51	upstream	f4d0cc426f77	f5acd036	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/12 11:43	upstream	fa5878760579	f5acd036	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/12 01:19	upstream	fa5878760579	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/11 00:50	upstream	64570fbc14f8	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/10 17:59	upstream	efb52a7d9511	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/09 22:49	upstream	7fd2bf83d59a	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/09 17:16	upstream	717478d89fe2	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/09 11:28	upstream	5d6ab0bb408f	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/09 11:28	upstream	5d6ab0bb408f	838e7e2c	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/08 21:23	upstream	5d6ab0bb408f	efe0f24d	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/08 18:06	upstream	741668ef7832	efe0f24d	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/07 21:57	upstream	1da38549dd64	efe0f24d	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/07 19:06	upstream	7041503d3a5c	efe0f24d	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/07 17:56	upstream	4a16df549d23	efe0f24d	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/07 15:44	upstream	5af4055fa813	efe0f24d	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/07 02:10	upstream	5af4055fa813	62ee0987	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/06 18:59	upstream	60a9483534ed	62ee0987	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/06 00:27	upstream	60a9483534ed	0a63fd36	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/05 18:38	upstream	60a9483534ed	f765b597	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/05 12:25	upstream	f6274b06e326	f765b597	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/04 22:54	upstream	f6274b06e326	ce697b49	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/04 18:01	upstream	84b3e42564ac	ce697b49	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/04 18:01	upstream	84b3e42564ac	ce697b49	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/04 08:13	upstream	9e1ff307c779	ce697b49	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/03 21:50	upstream	9e1ff307c779	db0f5787	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/03 19:00	upstream	6761a0ae9895	db0f5787	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/03 01:30	upstream	7b66f4393ad4	db0f5787	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/02 20:40	upstream	9904468fb0b7	db0f5787	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/03/19 09:05	upstream	8b12a62a4e3e	2af9d324	.config	log	report	upstream boot error: WARNING in __context_tracking_enter