1. 08 3月, 2008 1 次提交
    • I
      drivers/char/esp.c: fix bootup lockup · 80d38f9a
      Ingo Molnar 提交于
      randconfig testing found a bootup lockup in drivers/char/esp.c because
      of a spinlock that wasn't correctly initialized.
      
      I'm not sure why it became more prominent in 2.6.25-rc4, the bug seems
      rather old and i've been doing allyesconfig bootups for ages with
      CONFIG_ESP enabled.
      
      This fixes this bootup lockup:
      
       PM: Adding info for No Bus:ttyP63
       ttyP32 at 0x0240 (irq = 0) is an ESP primary port
       BUG: spinlock lockup on CPU#0, swapper/1, f56dd004
       Pid: 1, comm: swapper Not tainted 2.6.25-rc4-sched-devel.git-x86-latest.git #402 [<c03ac6f4>] _raw_spin_lock+0x134/0x140
        [<c08649be>] _spin_lock_irqsave+0x5e/0x80
        [<c0b9fbfe>] ? espserial_init+0x2be/0x6e0
        [<c0b9fbfe>] espserial_init+0x2be/0x6e0
        [<c0b877a3>] kernel_init+0x83/0x260
        [<c0b9f940>] ? espserial_init+0x0/0x6e0
        [<c010416a>] ? restore_nocheck_notrace+0x0/0xe
        [<c0b87720>] ? kernel_init+0x0/0x260
        [<c0b87720>] ? kernel_init+0x0/0x260
        [<c0104507>] kernel_thread_helper+0x7/0x10
        =======================
      
      kzalloc() is not the way to initialize spinlocks anymore.
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      80d38f9a
  2. 07 3月, 2008 12 次提交
  3. 06 3月, 2008 27 次提交