1. 25 Jan, 2021 10 commits
  2. 18 Jan, 2021 2 commits
    • Lorenzo Bianconi's avatar
      mt76: mt7663s: fix rx buffer refcounting · 952de419
      Lorenzo Bianconi authored
      Similar to mt7601u driver, fix erroneous rx page refcounting
      
      Fixes: a66cbdd6 ("mt76: mt7615: introduce mt7663s support")
      Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      Link: https://lore.kernel.org/r/dca19c9d445156201bc41f7cbb6e894bbc9a678c.1610644945.git.lorenzo@kernel.org
      952de419
    • Lorenzo Bianconi's avatar
      mt7601u: fix rx buffer refcounting · d24c7905
      Lorenzo Bianconi authored
      Fix the following crash due to erroneous page refcounting:
      
      [   32.445919] BUG: Bad page state in process swapper/1  pfn:11f65a
      [   32.447409] page:00000000938f0632 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x0 pfn:0x11f65a
      [   32.449605] flags: 0x8000000000000000()
      [   32.450421] raw: 8000000000000000 ffffffff825b0148 ffffea00045ae988 0000000000000000
      [   32.451795] raw: 0000000000000000 0000000000000001 00000000ffffff7f 0000000000000000
      [   32.452999] page dumped because: nonzero mapcount
      [   32.453888] Modules linked in:
      [   32.454492] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.11.0-rc2+ #1976
      [   32.455695] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-1.fc33 04/01/2014
      [   32.457157] Call Trace:
      [   32.457636]  <IRQ>
      [   32.457993]  dump_stack+0x77/0x97
      [   32.458576]  bad_page.cold+0x65/0x96
      [   32.459198]  get_page_from_freelist+0x46a/0x11f0
      [   32.460008]  __alloc_pages_nodemask+0x10a/0x2b0
      [   32.460794]  mt7601u_rx_tasklet+0x651/0x720
      [   32.461505]  tasklet_action_common.constprop.0+0x6b/0xd0
      [   32.462343]  __do_softirq+0x152/0x46c
      [   32.462928]  asm_call_irq_on_stack+0x12/0x20
      [   32.463610]  </IRQ>
      [   32.463953]  do_softirq_own_stack+0x5b/0x70
      [   32.464582]  irq_exit_rcu+0x9f/0xe0
      [   32.465028]  common_interrupt+0xae/0x1a0
      [   32.465536]  asm_common_interrupt+0x1e/0x40
      [   32.466071] RIP: 0010:default_idle+0x18/0x20
      [   32.468981] RSP: 0018:ffffc90000077f00 EFLAGS: 00000246
      [   32.469648] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
      [   32.470550] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81aac3dd
      [   32.471463] RBP: ffff88810022ab00 R08: 0000000000000001 R09: 0000000000000001
      [   32.472335] R10: 0000000000000046 R11: 0000000000005aa0 R12: 0000000000000000
      [   32.473235] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
      [   32.474139]  ? default_idle_call+0x4d/0x200
      [   32.474681]  default_idle_call+0x74/0x200
      [   32.475192]  do_idle+0x1d5/0x250
      [   32.475612]  cpu_startup_entry+0x19/0x20
      [   32.476114]  secondary_startup_64_no_verify+0xb0/0xbb
      [   32.476765] Disabling lock debugging due to kernel taint
      
      Fixes: c869f77d ("add mt7601u driver")
      Co-developed-by: default avatarFelix Fietkau <nbd@nbd.name>
      Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
      Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
      Acked-by: default avatarJakub Kicinski <kubakici@wp.pl>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      Link: https://lore.kernel.org/r/62b2380c8c2091834cfad05e1059b55f945bd114.1610643952.git.lorenzo@kernel.org
      d24c7905
  3. 14 Jan, 2021 2 commits
  4. 08 Jan, 2021 25 commits
  5. 07 Jan, 2021 1 commit