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: 311d, last: 85d

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-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<8188dc30>] (dump_backtrace) from [<8188dfec>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:237)
 r7:81f6a3a0 r6:00000080 r5:81f7c7f4 r4:60000193
[<8188dfd4>] (show_stack) from [<8189542c>] (__dump_stack lib/dump_stack.c:88 [inline])
[<8188dfd4>] (show_stack) from [<8189542c>] (dump_stack_lvl+0x70/0x98 lib/dump_stack.c:106)
[<818953bc>] (dump_stack_lvl) from [<8189546c>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r7:81f6a3a0 r6:82639954 r5:00000000 r4:82878098
[<81895454>] (dump_stack) from [<8188eb1c>] (panic+0x11c/0x35c kernel/panic.c:232)
[<8188ea00>] (panic) from [<80244bf0>] (__warn+0xb0/0x164 kernel/panic.c:603)
 r3:82622608 r2:00000000 r1:838d7cc0 r0:81f6a3a0
 r7:0000010f
[<80244b40>] (__warn) from [<8188edc4>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:626)
 r7:8028e938 r6:0000010f r5:81f6272c r4:00000000
[<8188ed60>] (warn_slowpath_fmt) from [<8028e938>] (__seqprop_assert include/linux/seqlock.h:271 [inline])
[<8188ed60>] (warn_slowpath_fmt) from [<8028e938>] (__seqprop_assert.constprop.0+0xf0/0x11c include/linux/seqlock.h:269)
 r8:00000000 r7:82622614 r6:838e0000 r5:818a9200 r4:00000001
[<8028e848>] (__seqprop_assert.constprop.0) from [<80290f60>] (vtime_user_enter+0x20/0x8c kernel/sched/cputime.c:709)
 r5:818a9200 r4:838e0000
[<80290f40>] (vtime_user_enter) from [<818a9200>] (__context_tracking_enter+0x13c/0x31c kernel/context_tracking.c:82)
 r7:82622614 r6:824a8d08 r5:ffffe000 r4:00000001
[<818a90c4>] (__context_tracking_enter) from [<804245d0>] (context_tracking_enter kernel/context_tracking.c:122 [inline])
[<818a90c4>] (__context_tracking_enter) from [<804245d0>] (context_tracking_enter+0x54/0x84 kernel/context_tracking.c:106)
 r7:00000000 r6:00000000 r5:60000193 r4:00000001
[<8042457c>] (context_tracking_enter) from [<8042461c>] (user_enter include/linux/context_tracking.h:28 [inline])
[<8042457c>] (context_tracking_enter) from [<8042461c>] (context_tracking_user_enter+0x1c/0x20 kernel/context_tracking.c:130)
 r5:818a9804 r4:00000000
[<80424600>] (context_tracking_user_enter) from [<802000b4>] (no_work_pending+0x8/0x38)
Exception stack(0x838d7fb0 to 0x838d7ff8)
7fa0:                                     00000000 00000000 00000000 00000000
7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
7fe0: 00000000 7ee4fed0 00000000 76f7ba00 00000010 00000000
Rebooting in 86400 seconds..

Crashes (1704):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Title
ci-qemu2-arm32	2021/10/31 21:34	upstream	8bb7eca972ad	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/31 20:04	upstream	75fcbd38608c	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/31 20:04	upstream	75fcbd38608c	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/30 23:54	upstream	180eca540ae0	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/30 21:50	upstream	3a4347d82efd	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/30 01:24	upstream	119c85055d86	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/29 19:34	upstream	a379fbbcb88b	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/29 13:22	upstream	f25a5481af12	098b5d53	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/29 01:20	upstream	f25a5481af12	2353a3ec	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/29 00:46	upstream	f25a5481af12	be531bb4	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/28 19:56	upstream	f31531e55495	be531bb4	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/28 18:06	upstream	411a44c24a56	be531bb4	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/27 22:34	upstream	1fc596a56b33	be531bb4	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/27 18:23	upstream	1fc596a56b33	719a0d78	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/27 10:32	upstream	d25f27432f80	719a0d78	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/26 23:01	upstream	d25f27432f80	d50eb50a	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/26 23:01	upstream	d25f27432f80	d50eb50a	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/26 11:30	upstream	3906fe9bb7f1	d50eb50a	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/25 23:29	upstream	3906fe9bb7f1	c1132b49	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/25 19:58	upstream	3906fe9bb7f1	78e5f70a	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/25 18:18	upstream	c2b43854aad9	78e5f70a	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/25 11:27	upstream	87066fdd2e30	78e5f70a	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/24 20:56	upstream	87066fdd2e30	4f0000ee	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/24 20:05	upstream	6c62666d8879	4f0000ee	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/24 18:01	upstream	6c62666d8879	282f03fb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/23 04:22	upstream	9c0c4d24ac00	282f03fb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/22 20:43	upstream	1d4590f5069b	282f03fb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/22 13:51	upstream	64222515138e	282f03fb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/22 06:01	upstream	64222515138e	55f90bc6	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/22 01:49	upstream	2f111a6fd5b5	55f90bc6	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/21 13:48	upstream	2f111a6fd5b5	c5cb7da8	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/20 22:25	upstream	2f111a6fd5b5	f111d03b	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/20 21:24	upstream	2f111a6fd5b5	418a00eb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/20 16:54	upstream	8e37395c3a5d	418a00eb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/20 10:23	upstream	d9abdee5fd5a	418a00eb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/20 10:23	upstream	d9abdee5fd5a	418a00eb	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/19 17:41	upstream	d9abdee5fd5a	466b7db1	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/19 16:31	upstream	d9abdee5fd5a	24dc29db	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/18 16:39	upstream	519d81956ee2	24dc29db	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/18 06:46	upstream	519d81956ee2	0c5d9412	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
ci-qemu2-arm32	2021/10/18 04:03	upstream	cf52ad5ff16c	0c5d9412	.config	log	report	upstream boot error: WARNING in __context_tracking_enter
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	2021/03/19 09:05	upstream	8b12a62a4e3e	2af9d324	.config	log	report	upstream boot error: WARNING in __context_tracking_enter