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authorThomas Gleixner <tglx@linutronix.de>2018-03-26 15:29:57 +0200
committerThomas Gleixner <tglx@linutronix.de>2018-03-29 16:10:07 +0200
commitbd03143007eb9b03a7f2316c677780561b68ba2a (patch)
tree32b6261ddb84b65345db4bfbdee12f061cfa8a92 /kernel/irq/Kconfig
parenta84d1169164b274f13b97a23ff235c000efe3b49 (diff)
downloadlinux-stericsson-bd03143007eb9b03a7f2316c677780561b68ba2a.tar.gz
alarmtimer: Init nanosleep alarm timer on stack
syszbot reported the following debugobjects splat: ODEBUG: object is on stack, but not annotated WARNING: CPU: 0 PID: 4185 at lib/debugobjects.c:328 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:327 [inline] debug_object_init+0x17/0x20 lib/debugobjects.c:391 debug_hrtimer_init kernel/time/hrtimer.c:410 [inline] debug_init kernel/time/hrtimer.c:458 [inline] hrtimer_init+0x8c/0x410 kernel/time/hrtimer.c:1259 alarm_init kernel/time/alarmtimer.c:339 [inline] alarm_timer_nsleep+0x164/0x4d0 kernel/time/alarmtimer.c:787 SYSC_clock_nanosleep kernel/time/posix-timers.c:1226 [inline] SyS_clock_nanosleep+0x235/0x330 kernel/time/posix-timers.c:1204 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 This happens because the hrtimer for the alarm nanosleep is on stack, but the code does not use the proper debug objects initialization. Split out the code for the allocated use cases and invoke hrtimer_init_on_stack() for the nanosleep related functions. Reported-by: syzbot+a3e0726462b2e346a31d@syzkaller.appspotmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: syzkaller-bugs@googlegroups.com Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1803261528270.1585@nanos.tec.linutronix.de
Diffstat (limited to 'kernel/irq/Kconfig')
0 files changed, 0 insertions, 0 deletions