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make oldconfig 3.12->3.18, no default value for PHYS_OFFSET? #768

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gorskima opened this issue Jan 25, 2015 · 2 comments
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make oldconfig 3.12->3.18, no default value for PHYS_OFFSET? #768

gorskima opened this issue Jan 25, 2015 · 2 comments

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@gorskima
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I'm trying to update my 3.12 config to the 3.18 version using the 'make oldconfig' command. I am then prompted to type in value for the config param PHYS_OFFSET. No default value is suggested. Any hints what a RPi needs here?
@popcornmix
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I'd recommand you run:

ARCH=arm make bcmrpi_defconfig

which will use the official settings (https://github.com/raspberrypi/linux/blob/rpi-3.18.y/arch/arm/configs/bcmrpi_defconfig). Then apply your changes.

But, as you see from bcmrpi_defconfig, PHYS_OFFSET should be 0.

@gorskima
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Thanks, worked :)

@melroy89 melroy89 mentioned this issue Mar 17, 2015
Closed
sigmaris pushed a commit to sigmaris/linux that referenced this issue Nov 7, 2020
@morbidrsa @gregkh
btrfs: reschedule when cloning lots of extents
9d63fb0 
commit 6b613cc upstream.

We have several occurrences of a soft lockup from fstest's generic/175
testcase, which look more or less like this one:

  watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [xfs_io:10030]
  Kernel panic - not syncing: softlockup: hung tasks
  CPU: 0 PID: 10030 Comm: xfs_io Tainted: G             L    5.9.0-rc5+ raspberrypi#768
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4-rebuilt.opensuse.org 04/01/2014
  Call Trace:
   <IRQ>
   dump_stack+0x77/0xa0
   panic+0xfa/0x2cb
   watchdog_timer_fn.cold+0x85/0xa5
   ? lockup_detector_update_enable+0x50/0x50
   __hrtimer_run_queues+0x99/0x4c0
   ? recalibrate_cpu_khz+0x10/0x10
   hrtimer_run_queues+0x9f/0xb0
   update_process_times+0x28/0x80
   tick_handle_periodic+0x1b/0x60
   __sysvec_apic_timer_interrupt+0x76/0x210
   asm_call_on_stack+0x12/0x20
   </IRQ>
   sysvec_apic_timer_interrupt+0x7f/0x90
   asm_sysvec_apic_timer_interrupt+0x12/0x20
  RIP: 0010:btrfs_tree_unlock+0x91/0x1a0 [btrfs]
  RSP: 0018:ffffc90007123a58 EFLAGS: 00000282
  RAX: ffff8881cea2fbe0 RBX: ffff8881cea2fbe0 RCX: 0000000000000000
  RDX: ffff8881d23fd200 RSI: ffffffff82045220 RDI: ffff8881cea2fba0
  RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000032
  R10: 0000160000000000 R11: 0000000000001000 R12: 0000000000001000
  R13: ffff8882357fd5b0 R14: ffff88816fa76e70 R15: ffff8881cea2fad0
   ? btrfs_tree_unlock+0x15b/0x1a0 [btrfs]
   btrfs_release_path+0x67/0x80 [btrfs]
   btrfs_insert_replace_extent+0x177/0x2c0 [btrfs]
   btrfs_replace_file_extents+0x472/0x7c0 [btrfs]
   btrfs_clone+0x9ba/0xbd0 [btrfs]
   btrfs_clone_files.isra.0+0xeb/0x140 [btrfs]
   ? file_update_time+0xcd/0x120
   btrfs_remap_file_range+0x322/0x3b0 [btrfs]
   do_clone_file_range+0xb7/0x1e0
   vfs_clone_file_range+0x30/0xa0
   ioctl_file_clone+0x8a/0xc0
   do_vfs_ioctl+0x5b2/0x6f0
   __x64_sys_ioctl+0x37/0xa0
   do_syscall_64+0x33/0x40
   entry_SYSCALL_64_after_hwframe+0x44/0xa9
  RIP: 0033:0x7f87977fc247
  RSP: 002b:00007ffd51a2f6d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
  RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f87977fc247
  RDX: 00007ffd51a2f710 RSI: 000000004020940d RDI: 0000000000000003
  RBP: 0000000000000004 R08: 00007ffd51a79080 R09: 0000000000000000
  R10: 00005621f11352f2 R11: 0000000000000206 R12: 0000000000000000
  R13: 0000000000000000 R14: 00005621f128b958 R15: 0000000080000000
  Kernel Offset: disabled
  ---[ end Kernel panic - not syncing: softlockup: hung tasks ]---

All of these lockup reports have the call chain btrfs_clone_files() ->
btrfs_clone() in common. btrfs_clone_files() calls btrfs_clone() with
both source and destination extents locked and loops over the source
extent to create the clones.

Conditionally reschedule in the btrfs_clone() loop, to give some time back
to other processes.

CC: [email protected] # 4.4+
Reviewed-by: Josef Bacik <[email protected]>
Signed-off-by: Johannes Thumshirn <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
popcornmix pushed a commit that referenced this issue Nov 23, 2020
@morbidrsa @gregkh
btrfs: reschedule when cloning lots of extents
a8ec660 
[ Upstream commit 6b613cc ]

We have several occurrences of a soft lockup from fstest's generic/175
testcase, which look more or less like this one:

  watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [xfs_io:10030]
  Kernel panic - not syncing: softlockup: hung tasks
  CPU: 0 PID: 10030 Comm: xfs_io Tainted: G             L    5.9.0-rc5+ #768
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4-rebuilt.opensuse.org 04/01/2014
  Call Trace:
   <IRQ>
   dump_stack+0x77/0xa0
   panic+0xfa/0x2cb
   watchdog_timer_fn.cold+0x85/0xa5
   ? lockup_detector_update_enable+0x50/0x50
   __hrtimer_run_queues+0x99/0x4c0
   ? recalibrate_cpu_khz+0x10/0x10
   hrtimer_run_queues+0x9f/0xb0
   update_process_times+0x28/0x80
   tick_handle_periodic+0x1b/0x60
   __sysvec_apic_timer_interrupt+0x76/0x210
   asm_call_on_stack+0x12/0x20
   </IRQ>
   sysvec_apic_timer_interrupt+0x7f/0x90
   asm_sysvec_apic_timer_interrupt+0x12/0x20
  RIP: 0010:btrfs_tree_unlock+0x91/0x1a0 [btrfs]
  RSP: 0018:ffffc90007123a58 EFLAGS: 00000282
  RAX: ffff8881cea2fbe0 RBX: ffff8881cea2fbe0 RCX: 0000000000000000
  RDX: ffff8881d23fd200 RSI: ffffffff82045220 RDI: ffff8881cea2fba0
  RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000032
  R10: 0000160000000000 R11: 0000000000001000 R12: 0000000000001000
  R13: ffff8882357fd5b0 R14: ffff88816fa76e70 R15: ffff8881cea2fad0
   ? btrfs_tree_unlock+0x15b/0x1a0 [btrfs]
   btrfs_release_path+0x67/0x80 [btrfs]
   btrfs_insert_replace_extent+0x177/0x2c0 [btrfs]
   btrfs_replace_file_extents+0x472/0x7c0 [btrfs]
   btrfs_clone+0x9ba/0xbd0 [btrfs]
   btrfs_clone_files.isra.0+0xeb/0x140 [btrfs]
   ? file_update_time+0xcd/0x120
   btrfs_remap_file_range+0x322/0x3b0 [btrfs]
   do_clone_file_range+0xb7/0x1e0
   vfs_clone_file_range+0x30/0xa0
   ioctl_file_clone+0x8a/0xc0
   do_vfs_ioctl+0x5b2/0x6f0
   __x64_sys_ioctl+0x37/0xa0
   do_syscall_64+0x33/0x40
   entry_SYSCALL_64_after_hwframe+0x44/0xa9
  RIP: 0033:0x7f87977fc247
  RSP: 002b:00007ffd51a2f6d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
  RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f87977fc247
  RDX: 00007ffd51a2f710 RSI: 000000004020940d RDI: 0000000000000003
  RBP: 0000000000000004 R08: 00007ffd51a79080 R09: 0000000000000000
  R10: 00005621f11352f2 R11: 0000000000000206 R12: 0000000000000000
  R13: 0000000000000000 R14: 00005621f128b958 R15: 0000000080000000
  Kernel Offset: disabled
  ---[ end Kernel panic - not syncing: softlockup: hung tasks ]---

All of these lockup reports have the call chain btrfs_clone_files() ->
btrfs_clone() in common. btrfs_clone_files() calls btrfs_clone() with
both source and destination extents locked and loops over the source
extent to create the clones.

Conditionally reschedule in the btrfs_clone() loop, to give some time back
to other processes.

CC: [email protected] # 4.4+
Reviewed-by: Josef Bacik <[email protected]>
Signed-off-by: Johannes Thumshirn <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
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@popcornmix @gorskima