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WARNING: kernel/signal.c:2174 at do_notify_parent+0x37c/0x384 kernel/signal.c:2174, CPU#1: syz.2.3864/20706
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 20706 Comm: syz.2.3864 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a14>] (dump_backtrace) from [<80201b08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:82a1e778 r6:00000000 r5:8231c74c r4:00000001
[<80201af0>] (show_stack) from [<8021e34c>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201af0>] (show_stack) from [<8021e34c>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021e2f0>] (dump_stack_lvl) from [<8021e378>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:82a1e778 r6:00000000 r5:84688c40 r4:82c7bd3c
[<8021e360>] (dump_stack) from [<8020260c>] (vpanic+0x114/0x320 kernel/panic.c:650)
[<802024f8>] (vpanic) from [<8020284c>] (trace_suspend_resume+0x0/0x104 kernel/panic.c:787)
 r7:80265f40
[<80202818>] (panic) from [<80250668>] (check_panic_on_warn kernel/panic.c:524 [inline])
[<80202818>] (panic) from [<80250668>] (get_taint+0x0/0x1c kernel/panic.c:519)
 r3:82a0b544 r2:00000001 r1:82303234 r0:8230ab14
[<802505f0>] (check_panic_on_warn) from [<802507e4>] (__warn+0x98/0x1ac kernel/panic.c:1103)
[<8025074c>] (__warn) from [<80250a70>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:1130)
 r8:00000009 r7:8230bd10 r6:dfaadebc r5:84688c40 r4:00000000
[<802508fc>] (warn_slowpath_fmt) from [<80265f40>] (do_notify_parent+0x37c/0x384 kernel/signal.c:2174)
 r10:84689334 r9:00000000 r8:dfaadf68 r7:84689510 r6:00000080 r5:84688c40
 r4:84688c40
[<80265bc4>] (do_notify_parent) from [<80257a50>] (exit_notify kernel/exit.c:757 [inline])
[<80265bc4>] (do_notify_parent) from [<80257a50>] (do_exit+0x798/0xae4 kernel/exit.c:987)
 r8:dfaadf68 r7:84689510 r6:83151a40 r5:84688c40 r4:84648000
[<802572b8>] (do_exit) from [<80257f28>] (__do_sys_exit kernel/exit.c:1084 [inline])
[<802572b8>] (do_exit) from [<80257f28>] (do_group_exit+0x0/0x8c kernel/exit.c:1082)
 r7:00000001
[<80257f10>] (sys_exit) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfaadfa8 to 0xdfaadff0)
dfa0:                   00000000 00000000 00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000001 003462d8 00000000 003d0f00 76f840dc
dfe0: 76f83e60 76f83e50 000193b4 001307a0
Rebooting in 86400 seconds..