)]}'
{
  "commit": "13be2efc390acd2a46a69a359f6efc00ca434599",
  "tree": "50d90721b92a23998c690a0eed6d8f55b7959517",
  "parents": [
    "6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f"
  ],
  "author": {
    "name": "Chris Wilson",
    "email": "chris@chris-wilson.co.uk",
    "time": "Fri Mar 05 12:21:40 2021 +0000"
  },
  "committer": {
    "name": "Alexandre Belloni",
    "email": "alexandre.belloni@bootlin.com",
    "time": "Tue Sep 14 10:20:19 2021 +0200"
  },
  "message": "rtc: cmos: Disable irq around direct invocation of cmos_interrupt()\n\nAs previously noted in commit 66e4f4a9cc38 (\"rtc: cmos: Use\nspin_lock_irqsave() in cmos_interrupt()\"):\n\n\u003c4\u003e[  254.192378] WARNING: inconsistent lock state\n\u003c4\u003e[  254.192384] 5.12.0-rc1-CI-CI_DRM_9834+ #1 Not tainted\n\u003c4\u003e[  254.192396] --------------------------------\n\u003c4\u003e[  254.192400] inconsistent {IN-HARDIRQ-W} -\u003e {HARDIRQ-ON-W} usage.\n\u003c4\u003e[  254.192409] rtcwake/5309 [HC0[0]:SC0[0]:HE1:SE1] takes:\n\u003c4\u003e[  254.192429] ffffffff8263c5f8 (rtc_lock){?...}-{2:2}, at: cmos_interrupt+0x18/0x100\n\u003c4\u003e[  254.192481] {IN-HARDIRQ-W} state was registered at:\n\u003c4\u003e[  254.192488]   lock_acquire+0xd1/0x3d0\n\u003c4\u003e[  254.192504]   _raw_spin_lock+0x2a/0x40\n\u003c4\u003e[  254.192519]   cmos_interrupt+0x18/0x100\n\u003c4\u003e[  254.192536]   rtc_handler+0x1f/0xc0\n\u003c4\u003e[  254.192553]   acpi_ev_fixed_event_detect+0x109/0x13c\n\u003c4\u003e[  254.192574]   acpi_ev_sci_xrupt_handler+0xb/0x28\n\u003c4\u003e[  254.192596]   acpi_irq+0x13/0x30\n\u003c4\u003e[  254.192620]   __handle_irq_event_percpu+0x43/0x2c0\n\u003c4\u003e[  254.192641]   handle_irq_event_percpu+0x2b/0x70\n\u003c4\u003e[  254.192661]   handle_irq_event+0x2f/0x50\n\u003c4\u003e[  254.192680]   handle_fasteoi_irq+0x9e/0x150\n\u003c4\u003e[  254.192693]   __common_interrupt+0x76/0x140\n\u003c4\u003e[  254.192715]   common_interrupt+0x96/0xc0\n\u003c4\u003e[  254.192732]   asm_common_interrupt+0x1e/0x40\n\u003c4\u003e[  254.192750]   _raw_spin_unlock_irqrestore+0x38/0x60\n\u003c4\u003e[  254.192767]   resume_irqs+0xba/0xf0\n\u003c4\u003e[  254.192786]   dpm_resume_noirq+0x245/0x3d0\n\u003c4\u003e[  254.192811]   suspend_devices_and_enter+0x230/0xaa0\n\u003c4\u003e[  254.192835]   pm_suspend.cold.8+0x301/0x34a\n\u003c4\u003e[  254.192859]   state_store+0x7b/0xe0\n\u003c4\u003e[  254.192879]   kernfs_fop_write_iter+0x11d/0x1c0\n\u003c4\u003e[  254.192899]   new_sync_write+0x11d/0x1b0\n\u003c4\u003e[  254.192916]   vfs_write+0x265/0x390\n\u003c4\u003e[  254.192933]   ksys_write+0x5a/0xd0\n\u003c4\u003e[  254.192949]   do_syscall_64+0x33/0x80\n\u003c4\u003e[  254.192965]   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\u003c4\u003e[  254.192986] irq event stamp: 43775\n\u003c4\u003e[  254.192994] hardirqs last  enabled at (43775): [\u003cffffffff81c00c42\u003e] asm_sysvec_apic_timer_interrupt+0x12/0x20\n\u003c4\u003e[  254.193023] hardirqs last disabled at (43774): [\u003cffffffff81aa691a\u003e] sysvec_apic_timer_interrupt+0xa/0xb0\n\u003c4\u003e[  254.193049] softirqs last  enabled at (42548): [\u003cffffffff81e00342\u003e] __do_softirq+0x342/0x48e\n\u003c4\u003e[  254.193074] softirqs last disabled at (42543): [\u003cffffffff810b45fd\u003e] irq_exit_rcu+0xad/0xd0\n\u003c4\u003e[  254.193101]\n                  other info that might help us debug this:\n\u003c4\u003e[  254.193107]  Possible unsafe locking scenario:\n\n\u003c4\u003e[  254.193112]        CPU0\n\u003c4\u003e[  254.193117]        ----\n\u003c4\u003e[  254.193121]   lock(rtc_lock);\n\u003c4\u003e[  254.193137]   \u003cInterrupt\u003e\n\u003c4\u003e[  254.193142]     lock(rtc_lock);\n\u003c4\u003e[  254.193156]\n                   *** DEADLOCK ***\n\n\u003c4\u003e[  254.193161] 6 locks held by rtcwake/5309:\n\u003c4\u003e[  254.193174]  #0: ffff888104861430 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x5a/0xd0\n\u003c4\u003e[  254.193232]  #1: ffff88810f823288 (\u0026of-\u003emutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xe7/0x1c0\n\u003c4\u003e[  254.193282]  #2: ffff888100cef3c0 (kn-\u003eactive#285\n\u003c7\u003e[  254.192706] i915 0000:00:02.0: [drm:intel_modeset_setup_hw_state [i915]] [CRTC:51:pipe A] hw state readout: disabled\n\u003c4\u003e[  254.193307] ){.+.+}-{0:0}, at: kernfs_fop_write_iter+0xf0/0x1c0\n\u003c4\u003e[  254.193333]  #3: ffffffff82649fa8 (system_transition_mutex){+.+.}-{3:3}, at: pm_suspend.cold.8+0xce/0x34a\n\u003c4\u003e[  254.193387]  #4: ffffffff827a2108 (acpi_scan_lock){+.+.}-{3:3}, at: acpi_suspend_begin+0x47/0x70\n\u003c4\u003e[  254.193433]  #5: ffff8881019ea178 (\u0026dev-\u003emutex){....}-{3:3}, at: device_resume+0x68/0x1e0\n\u003c4\u003e[  254.193485]\n                  stack backtrace:\n\u003c4\u003e[  254.193492] CPU: 1 PID: 5309 Comm: rtcwake Not tainted 5.12.0-rc1-CI-CI_DRM_9834+ #1\n\u003c4\u003e[  254.193514] Hardware name: Google Soraka/Soraka, BIOS MrChromebox-4.10 08/25/2019\n\u003c4\u003e[  254.193524] Call Trace:\n\u003c4\u003e[  254.193536]  dump_stack+0x7f/0xad\n\u003c4\u003e[  254.193567]  mark_lock.part.47+0x8ca/0xce0\n\u003c4\u003e[  254.193604]  __lock_acquire+0x39b/0x2590\n\u003c4\u003e[  254.193626]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20\n\u003c4\u003e[  254.193660]  lock_acquire+0xd1/0x3d0\n\u003c4\u003e[  254.193677]  ? cmos_interrupt+0x18/0x100\n\u003c4\u003e[  254.193716]  _raw_spin_lock+0x2a/0x40\n\u003c4\u003e[  254.193735]  ? cmos_interrupt+0x18/0x100\n\u003c4\u003e[  254.193758]  cmos_interrupt+0x18/0x100\n\u003c4\u003e[  254.193785]  cmos_resume+0x2ac/0x2d0\n\u003c4\u003e[  254.193813]  ? acpi_pm_set_device_wakeup+0x1f/0x110\n\u003c4\u003e[  254.193842]  ? pnp_bus_suspend+0x10/0x10\n\u003c4\u003e[  254.193864]  pnp_bus_resume+0x5e/0x90\n\u003c4\u003e[  254.193885]  dpm_run_callback+0x5f/0x240\n\u003c4\u003e[  254.193914]  device_resume+0xb2/0x1e0\n\u003c4\u003e[  254.193942]  ? pm_dev_err+0x25/0x25\n\u003c4\u003e[  254.193974]  dpm_resume+0xea/0x3f0\n\u003c4\u003e[  254.194005]  dpm_resume_end+0x8/0x10\n\u003c4\u003e[  254.194030]  suspend_devices_and_enter+0x29b/0xaa0\n\u003c4\u003e[  254.194066]  pm_suspend.cold.8+0x301/0x34a\n\u003c4\u003e[  254.194094]  state_store+0x7b/0xe0\n\u003c4\u003e[  254.194124]  kernfs_fop_write_iter+0x11d/0x1c0\n\u003c4\u003e[  254.194151]  new_sync_write+0x11d/0x1b0\n\u003c4\u003e[  254.194183]  vfs_write+0x265/0x390\n\u003c4\u003e[  254.194207]  ksys_write+0x5a/0xd0\n\u003c4\u003e[  254.194232]  do_syscall_64+0x33/0x80\n\u003c4\u003e[  254.194251]  entry_SYSCALL_64_after_hwframe+0x44/0xae\n\u003c4\u003e[  254.194274] RIP: 0033:0x7f07d79691e7\n\u003c4\u003e[  254.194293] Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24\n\u003c4\u003e[  254.194312] RSP: 002b:00007ffd9cc2c768 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\n\u003c4\u003e[  254.194337] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f07d79691e7\n\u003c4\u003e[  254.194352] RDX: 0000000000000004 RSI: 0000556ebfc63590 RDI: 000000000000000b\n\u003c4\u003e[  254.194366] RBP: 0000556ebfc63590 R08: 0000000000000000 R09: 0000000000000004\n\u003c4\u003e[  254.194379] R10: 0000556ebf0ec2a6 R11: 0000000000000246 R12: 0000000000000004\n\nwhich breaks S3-resume on fi-kbl-soraka presumably as that\u0027s slow enough\nto trigger the alarm during the suspend.\n\nFixes: 6950d046eb6e (\"rtc: cmos: Replace spin_lock_irqsave with spin_lock in hard IRQ\")\nReferences: 66e4f4a9cc38 (\"rtc: cmos: Use spin_lock_irqsave() in cmos_interrupt()\"):\nSigned-off-by: Chris Wilson \u003cchris@chris-wilson.co.uk\u003e\nCc: Xiaofei Tan \u003ctanxiaofei@huawei.com\u003e\nCc: Alexandre Belloni \u003calexandre.belloni@bootlin.com\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nCc: Ville Syrjälä \u003cville.syrjala@linux.intel.com\u003e\nReviewed-by: Ville Syrjälä \u003cville.syrjala@linux.intel.com\u003e\nSigned-off-by: Alexandre Belloni \u003calexandre.belloni@bootlin.com\u003e\nLink: https://lore.kernel.org/r/20210305122140.28774-1-chris@chris-wilson.co.uk\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "eb15067a605eff35cb11856439683963512a1cfa",
      "old_mode": 33188,
      "old_path": "drivers/rtc/rtc-cmos.c",
      "new_id": "4eb53412b8085e12d668c2aef3b215b939094143",
      "new_mode": 33188,
      "new_path": "drivers/rtc/rtc-cmos.c"
    }
  ]
}