On Mon, Apr 28, 2014 at 07:51:03AM -0500, Nishanth Menon wrote: > omap2plus_defconfig shows for the following platform deadlock with > console_lock. > > 1: am335x-evm: Boot PASS: http://slexy.org/raw/s2biDSRTAP > 2: am335x-sk: Boot PASS: http://slexy.org/raw/s20deZjf34 > 3: am3517-evm: Boot PASS: http://slexy.org/raw/s21NM1bLxs > 4: am37x-evm: Boot PASS: http://slexy.org/raw/s2022AFyZ6 > 5: am43xx-epos: Boot PASS: http://slexy.org/raw/s21Dq284CM > 6: BeagleBoard-XM: Boot PASS: http://slexy.org/raw/s2aK24U5ON > 7: beagleboard-vanilla: Boot PASS: http://slexy.org/raw/s21j15I8kK > 8: beaglebone-black: Boot PASS: http://slexy.org/raw/s21jO02jIK > 9: craneboard: Boot PASS: http://slexy.org/raw/s22JGqMSfY > 10: DRA7xx-EVM: Boot PASS: http://slexy.org/raw/s260y1Opd1 > 11: n900: Boot PASS: http://slexy.org/raw/s20IDKmJ6L > 12: pandaboard-vanilla: Boot PASS: http://slexy.org/raw/s2dJcyep9A > 13: sdp2430: Boot PASS: http://slexy.org/raw/s20Oldnm8I > 14: sdp3430: Boot PASS: http://slexy.org/raw/s2Mo7s3ttZ > 15: OMAP5432uEVM: Boot PASS: http://slexy.org/raw/s2qXj7HFTJ > > > ============================================= > [ INFO: possible recursive locking detected ] > 3.15.0-rc2-next-20140428-00002-gd0ca5e6 #1 Not tainted > --------------------------------------------- > swapper/0/0 is trying to acquire lock: > (console_lock){+.+...}, at: [<c07d1124>] con_init+0xc/0x28c > > but task is already holding lock: > (console_lock){+.+...}, at: [<c008c224>] vprintk_emit+0x200/0x590 > > other info that might help us debug this: > Possible unsafe locking scenario: > > CPU0 > ---- > lock(console_lock); > lock(console_lock); > > *** DEADLOCK *** > > May be due to missing lock nesting notation > > 1 lock held by swapper/0/0: > #0: (console_lock){+.+...}, at: [<c008c224>] vprintk_emit+0x200/0x590 someone already found the culprit: http://marc.info/?l=linux-kernel&m=139870299331959 cheers -- balbi
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