From: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>
To: Josef Bacik <josef@toxicpanda.com>
Cc: linux-btrfs@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH 00/42] Cleanup error handling in relocation
Date: Sat, 14 Nov 2020 19:37:57 -0500 [thread overview]
Message-ID: <20201115003756.GD31381@hungrycats.org> (raw)
In-Reply-To: <20201113143925.GC31381@hungrycats.org>
On Fri, Nov 13, 2020 at 09:39:26AM -0500, Zygo Blaxell wrote:
> On Fri, Nov 13, 2020 at 06:03:39AM -0500, Josef Bacik wrote:
> > On 11/12/20 10:53 PM, Zygo Blaxell wrote:
> > > On Thu, Nov 12, 2020 at 04:18:27PM -0500, Josef Bacik wrote:
> > > > Hello,
> > > >
> > > > Relocation is the last place that is not able to handle errors at all, which
> > > > results in all sorts of lovely panics if you encounter corruptions or IO errors.
> > > > I'm going to start cleaning up relocation, but before I move code around I want
> > > > the error handling to be somewhat sane, so I'm not changing behavior and error
> > > > handling at the same time.
> > > >
> > > > These patches are purely about error handling, there is no behavior changing
> > > > other than returning errors up the chain properly. There is a lot of room for
> > > > follow up cleanups, which will happen next. However I wanted to get this series
> > > > done today and out so we could get it merged ASAP, and then the follow up
> > > > cleanups can happen later as they are less important and less critical.
> > > >
> > > > The only exception to the above is the patch to add the error injection sites
> > > > for btrfs_cow_block and btrfs_search_slot, and a lockdep fix that I discovered
> > > > while running my tests, those are the first two patches in the series.
> > > >
> > > > I tested this with my error injection stress test, where I keep track of all
> > > > stack traces that have been tested and only inject errors when we have a new
> > > > stack trace, which means I should have covered all of the various error
> > > > conditions. With this patchset I'm no longer panicing while stressing the error
> > > > conditions. Thanks,
> > >
> > > I just threw this patch set on top of kdave/for-next
> > > (a12315094469d573e41fe3eee91c99a83cec02df) and I got something that
> > > looks like runaway balances:
> > >
> >
> > Yup I hit this with my xfstests run that I started after I sent these out, I
> > got a little happy with deleting things for one of the patches, this time
> > I'm running xfstests _before_ I send the next version. Thanks,
>
> Well, the good news is you killed the BUG_ON I was hitting every few hours
> while running a test that sends a SIGINT to balance:
>
> https://lore.kernel.org/linux-btrfs/20200904155359.GC5890@hungrycats.org/
>
> so I'm looking forward to the next version.
OK, I've run the next version, and...the SIGINT test is still failing,
just not in the original place, because the original place doesn't exist
any more.
This happened once:
[48401.882283][T11825] BTRFS info (device dm-0): balance: start -mlimit=1 -slimit=1
[48401.889294][T11825] BTRFS info (device dm-0): relocating block group 37267716440064 flags metadata|raid1
[48423.523596][T11825] BTRFS info (device dm-0): balance: canceled
[48553.928742][ T1426] BTRFS info (device dm-0): balance: start -mlimit=1 -slimit=1
[48553.952356][ T1426] BTRFS info (device dm-0): relocating block group 37267716440064 flags metadata|raid1
[48626.179977][ T4548] avg_delayed_ref_runtime = 5084522, time = 780837759114, count = 153571
[48639.557809][ T1426] ==================================================================
[48639.559006][ T1426] BUG: KASAN: null-ptr-deref in select_reloc_root+0x1b0/0x6a0
[48639.560146][ T1426] Read of size 8 at addr 0000000000000000 by task btrfs/1426
[48639.561274][ T1426]
[48639.561618][ T1426] CPU: 1 PID: 1426 Comm: btrfs Tainted: G W 5.10.0-87fa69f8a71b-for-next+ #14
[48639.563076][ T1426] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[48639.564382][ T1426] Call Trace:
[48639.564909][ T1426] dump_stack+0xbc/0xf9
[48639.565504][ T1426] ? select_reloc_root+0x1b0/0x6a0
[48639.566238][ T1426] ? select_reloc_root+0x1b0/0x6a0
[48639.566980][ T1426] kasan_report.cold.10+0x5/0x37
[48639.567685][ T1426] ? select_reloc_root+0x1b0/0x6a0
[48639.568599][ T1426] __asan_load8+0x69/0x90
[48639.569481][ T1426] select_reloc_root+0x1b0/0x6a0
[48639.570199][ T1426] ? __kasan_slab_free+0xf3/0x140
[48639.570926][ T1426] ? relocate_data_extent+0x1a0/0x1a0
[48639.571710][ T1426] ? btrfs_ioctl+0x24c8/0x4380
[48639.572400][ T1426] ? do_syscall_64+0x37/0x80
[48639.573062][ T1426] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[48639.573934][ T1426] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[48639.574953][ T1426] ? free_extent_buffer.part.52+0xb1/0x140
[48639.575786][ T1426] ? do_raw_spin_unlock+0xa8/0x140
[48639.576528][ T1426] do_relocation+0x23c/0xc10
[48639.577187][ T1426] ? free_extent_buffer.part.52+0xd7/0x140
[48639.578020][ T1426] ? __list_add_valid+0x33/0x70
[48639.578711][ T1426] ? select_reloc_root+0x6a0/0x6a0
[48639.579441][ T1426] ? btrfs_backref_finish_upper_links+0x419/0x7d0
[48639.580358][ T1426] ? walk_up_backref+0x91/0xd0
[48639.581039][ T1426] ? __asan_loadN+0xf/0x20
[48639.581664][ T1426] ? select_one_root+0x11d/0x2d0
[48639.582373][ T1426] ? lock_downgrade+0x3f0/0x3f0
[48639.583068][ T1426] ? do_raw_spin_unlock+0xa8/0x140
[48639.583802][ T1426] ? _raw_spin_unlock+0x22/0x30
[48639.584503][ T1426] ? btrfs_block_rsv_refill+0x50/0xa0
[48639.585280][ T1426] relocate_tree_blocks+0x853/0xb60
[48639.586030][ T1426] ? do_relocation+0xc10/0xc10
[48639.586709][ T1426] ? kasan_kmalloc+0x9/0x10
[48639.587356][ T1426] ? kmem_cache_alloc_trace+0x6a3/0xcb0
[48639.588147][ T1426] ? free_extent_buffer.part.52+0xd7/0x140
[48639.588983][ T1426] ? rb_insert_color+0x342/0x360
[48639.589687][ T1426] ? add_tree_block.isra.36+0x236/0x2b0
[48639.590478][ T1426] relocate_block_group+0x2eb/0x780
[48639.591223][ T1426] ? merge_reloc_roots+0x470/0x470
[48639.591972][ T1426] btrfs_relocate_block_group+0x26e/0x4c0
[48639.592945][ T1426] btrfs_relocate_chunk+0x52/0x120
[48639.593668][ T1426] btrfs_balance+0xe2e/0x18f0
[48639.594311][ T1426] ? __kasan_check_read+0x11/0x20
[48639.594962][ T1426] ? lock_acquire+0xd0/0x550
[48639.595597][ T1426] ? btrfs_relocate_chunk+0x120/0x120
[48639.596372][ T1426] ? kasan_unpoison_task_stack+0xf/0x20
[48639.597168][ T1426] ? kmem_cache_alloc_trace+0x6a3/0xcb0
[48639.597969][ T1426] ? _copy_from_user+0x83/0xc0
[48639.598648][ T1426] btrfs_ioctl_balance+0x3a7/0x460
[48639.599383][ T1426] btrfs_ioctl+0x24c8/0x4380
[48639.600060][ T1426] ? __kasan_check_read+0x11/0x20
[48639.600769][ T1426] ? lock_release+0xc8/0x640
[48639.601429][ T1426] ? lru_cache_add+0x178/0x250
[48639.602102][ T1426] ? btrfs_ioctl_get_supported_features+0x30/0x30
[48639.603004][ T1426] ? lock_downgrade+0x3f0/0x3f0
[48639.603681][ T1426] ? handle_mm_fault+0x159e/0x2150
[48639.604408][ T1426] ? __kasan_check_read+0x11/0x20
[48639.605108][ T1426] ? lock_release+0xc8/0x640
[48639.605750][ T1426] ? do_user_addr_fault+0x299/0x5a0
[48639.606481][ T1426] ? do_raw_spin_unlock+0xa8/0x140
[48639.607198][ T1426] ? lock_downgrade+0x3f0/0x3f0
[48639.607880][ T1426] ? _raw_spin_unlock+0x22/0x30
[48639.608557][ T1426] ? handle_mm_fault+0xad6/0x2150
[48639.609262][ T1426] ? do_vfs_ioctl+0xfc/0x9d0
[48639.609907][ T1426] ? ioctl_file_clone+0xe0/0xe0
[48639.610584][ T1426] ? __kasan_check_write+0x14/0x20
[48639.611301][ T1426] ? up_read+0x176/0x4f0
[48639.611901][ T1426] ? down_write_nested+0x2d0/0x2d0
[48639.612612][ T1426] ? vmacache_find+0xc9/0x120
[48639.613274][ T1426] ? __kasan_check_read+0x11/0x20
[48639.613977][ T1426] ? __fget_light+0xae/0x110
[48639.614620][ T1426] __x64_sys_ioctl+0xc3/0x100
[48639.615280][ T1426] do_syscall_64+0x37/0x80
[48639.615905][ T1426] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[48639.616726][ T1426] RIP: 0033:0x7ffb3753c427
[48639.617349][ T1426] Code: 00 00 90 48 8b 05 69 aa 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 aa 0c 00 f7 d8 64 89 01 48
[48639.620089][ T1426] RSP: 002b:00007ffddaf08558 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[48639.621268][ T1426] RAX: ffffffffffffffda RBX: 00007ffddaf085f8 RCX: 00007ffb3753c427
[48639.622380][ T1426] RDX: 00007ffddaf085f8 RSI: 00000000c4009420 RDI: 0000000000000003
[48639.623492][ T1426] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[48639.624606][ T1426] R10: fffffffffffff59d R11: 0000000000000202 R12: 0000000000000001
[48639.625719][ T1426] R13: 0000000000000000 R14: 00007ffddaf09a34 R15: 0000000000000001
[48639.626841][ T1426] ==================================================================
(gdb) list *(select_reloc_root+0x1b0)
0xffffffff8194db20 is in select_reloc_root (fs/btrfs/relocation.c:2145).
2140 ret = btrfs_record_root_in_trans(trans, root);
2141 if (ret)
2142 return ERR_PTR(ret);
2143 root = root->reloc_root;
2144
2145 if (next->new_bytenr != root->node->start) {
2146 /*
2147 * We just created the reloc root, so we shouldn't have
2148 * ->new_bytenr set and this shouldn't be in the changed
2149 * list. If it is then we have multiple roots pointing
The following sequence has happened 3 times since yesterday:
[ 3252.939619][ T8472] BTRFS info (device dm-0): balance: resume -musage=90,limit=1 -susage=90,limit=1
[ 3253.962086][ T8472] BTRFS info (device dm-0): relocating block group 37252147183616 flags metadata|raid1
[ 3279.938601][ T8472]
[ 3279.938977][ T8472] ======================================================
[ 3279.939993][ T8472] WARNING: possible circular locking dependency detected
[ 3279.941020][ T8472] 5.10.0-87fa69f8a71b-for-next+ #14 Tainted: G W
[ 3279.942201][ T8472] ------------------------------------------------------
[ 3279.943481][ T8472] btrfs/8472 is trying to acquire lock:
[ 3279.944615][ T8472] ffff888040a3ba28 (btrfs-tree-00){++++}-{3:3}, at: __btrfs_tree_lock+0x29/0x190
[ 3279.946631][ T8472]
[ 3279.946631][ T8472] but task is already holding lock:
[ 3279.947819][ T8472] ffff88812c69eeb8 (btrfs-extent-01){++++}-{3:3}, at: __btrfs_tree_read_lock+0x49/0x240
[ 3279.949266][ T8472]
[ 3279.949266][ T8472] which lock already depends on the new lock.
[ 3279.949266][ T8472]
[ 3279.950909][ T8472]
[ 3279.950909][ T8472] the existing dependency chain (in reverse order) is:
[ 3279.952357][ T8472]
[ 3279.952357][ T8472] -> #1 (btrfs-extent-01){++++}-{3:3}:
[ 3279.953462][ T8472] lock_release+0x28c/0x640
[ 3279.954184][ T8472] up_read+0x7d/0x4f0
[ 3279.954833][ T8472] btrfs_tree_read_unlock+0xbc/0x1b0
[ 3279.955861][ T8472] btrfs_search_slot+0xd84/0xfb0
[ 3279.956639][ T8472] btrfs_lookup_extent_info+0x165/0x5b0
[ 3279.957508][ T8472] do_walk_down+0x29c/0xc00
[ 3279.958230][ T8472] walk_down_tree+0x1af/0x210
[ 3279.958973][ T8472] btrfs_drop_snapshot+0x44f/0xda0
[ 3279.959779][ T8472] clean_dirty_subvols+0x1bd/0x220
[ 3279.960592][ T8472] btrfs_recover_relocation+0x60d/0x940
[ 3279.961464][ T8472] btrfs_mount_rw+0x12e/0x200
[ 3279.962236][ T8472] open_ctree+0x2149/0x2507
[ 3279.962986][ T8472] btrfs_mount_root.cold.74+0xe/0xea
[ 3279.963816][ T8472] legacy_get_tree+0x89/0xd0
[ 3279.964547][ T8472] vfs_get_tree+0x52/0x150
[ 3279.965257][ T8472] fc_mount+0x14/0x60
[ 3279.965903][ T8472] vfs_kern_mount.part.38+0x61/0xa0
[ 3279.966717][ T8472] vfs_kern_mount+0x13/0x20
[ 3279.967435][ T8472] btrfs_mount+0x1f0/0x5d0
[ 3279.968147][ T8472] legacy_get_tree+0x89/0xd0
[ 3279.968938][ T8472] vfs_get_tree+0x52/0x150
[ 3279.969652][ T8472] path_mount+0xa53/0xf00
[ 3279.970411][ T8472] do_mount+0xd2/0xf0
[ 3279.971063][ T8472] __x64_sys_mount+0x100/0x120
[ 3279.971833][ T8472] do_syscall_64+0x37/0x80
[ 3279.972586][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3279.973564][ T8472]
[ 3279.973564][ T8472] -> #0 (btrfs-tree-00){++++}-{3:3}:
[ 3279.974673][ T8472] __lock_acquire+0x1dce/0x28a0
[ 3279.975509][ T8472] lock_acquire+0x192/0x550
[ 3279.976287][ T8472] down_write_nested+0xa6/0x2d0
[ 3279.977131][ T8472] __btrfs_tree_lock+0x29/0x190
[ 3279.977972][ T8472] btrfs_tree_lock+0x10/0x20
[ 3279.978764][ T8472] btrfs_search_slot+0x462/0xfb0
[ 3279.979614][ T8472] relocate_tree_blocks+0x8cd/0xb60
[ 3279.980506][ T8472] relocate_block_group+0x2eb/0x780
[ 3279.981368][ T8472] btrfs_relocate_block_group+0x26e/0x4c0
[ 3279.982285][ T8472] btrfs_relocate_chunk+0x52/0x120
[ 3279.983093][ T8472] btrfs_balance+0xe2e/0x18f0
[ 3279.983924][ T8472] btrfs_ioctl_balance+0x1f9/0x460
[ 3279.984729][ T8472] btrfs_ioctl+0x24c8/0x4380
[ 3279.985472][ T8472] __x64_sys_ioctl+0xc3/0x100
[ 3279.986327][ T8472] do_syscall_64+0x37/0x80
[ 3279.987058][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3279.987999][ T8472]
[ 3279.987999][ T8472] other info that might help us debug this:
[ 3279.987999][ T8472]
[ 3279.989509][ T8472] Possible unsafe locking scenario:
[ 3279.989509][ T8472]
[ 3279.990577][ T8472] CPU0 CPU1
[ 3279.991346][ T8472] ---- ----
[ 3279.992116][ T8472] lock(btrfs-extent-01);
[ 3279.992751][ T8472] lock(btrfs-tree-00);
[ 3279.993722][ T8472] lock(btrfs-extent-01);
[ 3279.994718][ T8472] lock(btrfs-tree-00);
[ 3279.995333][ T8472]
[ 3279.995333][ T8472] *** DEADLOCK ***
[ 3279.995333][ T8472]
[ 3279.996497][ T8472] 5 locks held by btrfs/8472:
[ 3279.997172][ T8472] #0: ffff888113010498 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write_file+0x43/0x90
[ 3279.998557][ T8472] #1: ffff888106cc2318 (&fs_info->delete_unused_bgs_mutex){+.+.}-{3:3}, at: btrfs_balance+0xa54/0x18f0
[ 3280.000165][ T8472] #2: ffff888106cc08f0 (&fs_info->cleaner_mutex){+.+.}-{3:3}, at: btrfs_relocate_block_group+0x266/0x4c0
[ 3280.001823][ T8472] #3: ffff8881130106b8 (sb_internal#2){.+.+}-{0:0}, at: start_transaction+0x6a3/0x910
[ 3280.003355][ T8472] #4: ffff88812c69eeb8 (btrfs-extent-01){++++}-{3:3}, at: __btrfs_tree_read_lock+0x49/0x240
[ 3280.004829][ T8472]
[ 3280.004829][ T8472] stack backtrace:
[ 3280.005671][ T8472] CPU: 3 PID: 8472 Comm: btrfs Tainted: G W 5.10.0-87fa69f8a71b-for-next+ #14
[ 3280.007129][ T8472] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 3280.008438][ T8472] Call Trace:
[ 3280.008915][ T8472] dump_stack+0xbc/0xf9
[ 3280.009562][ T8472] print_circular_bug.isra.42.cold.67+0x146/0x14b
[ 3280.010491][ T8472] check_noncircular+0x219/0x250
[ 3280.011207][ T8472] ? print_circular_bug.isra.42+0x1c0/0x1c0
[ 3280.012059][ T8472] ? pvclock_clocksource_read+0xeb/0x190
[ 3280.012873][ T8472] ? __kasan_check_write+0x14/0x20
[ 3280.013606][ T8472] ? lockdep_lock+0xa7/0x160
[ 3280.014269][ T8472] __lock_acquire+0x1dce/0x28a0
[ 3280.014973][ T8472] ? register_lock_class+0x8f0/0x8f0
[ 3280.015734][ T8472] ? rcu_read_lock_sched_held+0xa1/0xd0
[ 3280.016535][ T8472] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 3280.017300][ T8472] lock_acquire+0x192/0x550
[ 3280.017950][ T8472] ? __btrfs_tree_lock+0x29/0x190
[ 3280.018725][ T8472] ? check_flags+0x30/0x30
[ 3280.019366][ T8472] ? ___might_sleep+0x10f/0x1e0
[ 3280.020062][ T8472] ? __might_sleep+0x71/0xe0
[ 3280.020716][ T8472] down_write_nested+0xa6/0x2d0
[ 3280.021413][ T8472] ? __btrfs_tree_lock+0x29/0x190
[ 3280.022135][ T8472] ? _down_write_nest_lock+0x2c0/0x2c0
[ 3280.022911][ T8472] ? balance_node_right+0x3c0/0x3c0
[ 3280.023649][ T8472] ? rcu_read_lock_bh_held+0x70/0xb0
[ 3280.024402][ T8472] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 3280.025157][ T8472] __btrfs_tree_lock+0x29/0x190
[ 3280.025852][ T8472] btrfs_tree_lock+0x10/0x20
[ 3280.026524][ T8472] btrfs_search_slot+0x462/0xfb0
[ 3280.027261][ T8472] ? split_leaf+0x9a0/0x9a0
[ 3280.027941][ T8472] ? walk_up_backref+0xd0/0xd0
[ 3280.028652][ T8472] ? do_raw_spin_lock+0x1e0/0x1e0
[ 3280.029445][ T8472] ? do_raw_spin_unlock+0xa8/0x140
[ 3280.030222][ T8472] ? _raw_spin_unlock+0x22/0x30
[ 3280.030960][ T8472] ? btrfs_block_rsv_refill+0x50/0xa0
[ 3280.031772][ T8472] relocate_tree_blocks+0x8cd/0xb60
[ 3280.032567][ T8472] ? do_relocation+0xc10/0xc10
[ 3280.033294][ T8472] ? kmem_cache_alloc_trace+0xa06/0xcb0
[ 3280.034144][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.035039][ T8472] ? rb_insert_color+0x342/0x360
[ 3280.035842][ T8472] ? add_tree_block.isra.36+0x236/0x2b0
[ 3280.036707][ T8472] relocate_block_group+0x2eb/0x780
[ 3280.037544][ T8472] ? merge_reloc_roots+0x470/0x470
[ 3280.038371][ T8472] btrfs_relocate_block_group+0x26e/0x4c0
[ 3280.039289][ T8472] btrfs_relocate_chunk+0x52/0x120
[ 3280.040114][ T8472] btrfs_balance+0xe2e/0x18f0
[ 3280.040867][ T8472] ? pvclock_clocksource_read+0xeb/0x190
[ 3280.041775][ T8472] ? btrfs_relocate_chunk+0x120/0x120
[ 3280.042655][ T8472] ? lock_contended+0x620/0x6e0
[ 3280.043490][ T8472] ? do_raw_spin_lock+0x1e0/0x1e0
[ 3280.044303][ T8472] ? do_raw_spin_unlock+0xa8/0x140
[ 3280.045051][ T8472] btrfs_ioctl_balance+0x1f9/0x460
[ 3280.045980][ T8472] btrfs_ioctl+0x24c8/0x4380
[ 3280.047029][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.047851][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.048644][ T8472] ? __asan_loadN+0xf/0x20
[ 3280.049360][ T8472] ? btrfs_ioctl_get_supported_features+0x30/0x30
[ 3280.050469][ T8472] ? kvm_sched_clock_read+0x18/0x30
[ 3280.051598][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.052378][ T8472] ? lock_downgrade+0x3f0/0x3f0
[ 3280.053141][ T8472] ? handle_mm_fault+0xad6/0x2150
[ 3280.053934][ T8472] ? do_vfs_ioctl+0xfc/0x9d0
[ 3280.054654][ T8472] ? ioctl_file_clone+0xe0/0xe0
[ 3280.055421][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.056240][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.057060][ T8472] ? check_flags+0x26/0x30
[ 3280.057749][ T8472] ? lock_is_held_type+0xc3/0xf0
[ 3280.058573][ T8472] ? syscall_enter_from_user_mode+0x1b/0x60
[ 3280.059553][ T8472] ? do_syscall_64+0x13/0x80
[ 3280.060294][ T8472] ? rcu_read_lock_sched_held+0xa1/0xd0
[ 3280.061149][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.061924][ T8472] ? __fget_light+0xae/0x110
[ 3280.062631][ T8472] __x64_sys_ioctl+0xc3/0x100
[ 3280.063352][ T8472] do_syscall_64+0x37/0x80
[ 3280.064036][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3280.064941][ T8472] RIP: 0033:0x7f18ca415427
[ 3280.065619][ T8472] Code: 00 00 90 48 8b 05 69 aa 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 aa 0c 00 f7 d8 64 89 01 48
[ 3280.068691][ T8472] RSP: 002b:00007ffcd1fed6b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 3280.070070][ T8472] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18ca415427
[ 3280.071348][ T8472] RDX: 00007ffcd1fed6c8 RSI: 00000000c4009420 RDI: 0000000000000003
[ 3280.072750][ T8472] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[ 3280.073998][ T8472] R10: fffffffffffff59d R11: 0000000000000206 R12: 0000000000000002
[ 3280.075238][ T8472] R13: 00007ffcd1fefa39 R14: 0000560042d94119 R15: 0000000000000000
[ 3280.222230][ T8472] ------------[ cut here ]------------
[ 3280.223530][ T8472] WARNING: CPU: 3 PID: 8472 at fs/btrfs/backref.c:2627 btrfs_backref_add_tree_node+0xfa4/0x11d0
[ 3280.226859][ T8472] Modules linked in:
[ 3280.228422][ T8472] CPU: 3 PID: 8472 Comm: btrfs Tainted: G W 5.10.0-87fa69f8a71b-for-next+ #14
[ 3280.231521][ T8472] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 3280.233746][ T8472] RIP: 0010:btrfs_backref_add_tree_node+0xfa4/0x11d0
[ 3280.234776][ T8472] Code: 89 e7 4d 8d 66 30 e8 db 3e f3 ff 49 8d 46 2c 48 89 45 c0 e9 da f1 ff ff 49 8d 46 2c bb 8b ff ff ff 48 89 45 c0 e9 c8 f1 ff ff <0f> 0b 49 8d 46 2c bb fe ff ff ff 4d 8d 66 30 48 89 45 c0 e9 b0 f1
[ 3280.237631][ T8472] RSP: 0018:ffffc9000769f4c0 EFLAGS: 00010246
[ 3280.238626][ T8472] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff92000ed3e85
[ 3280.239826][ T8472] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff88805ef475e8
[ 3280.241013][ T8472] RBP: ffffc9000769f598 R08: ffffed100bde8ebe R09: ffffed100bde8ebe
[ 3280.242197][ T8472] R10: ffff88805ef475eb R11: ffffed100bde8ebd R12: ffff88805ef47020
[ 3280.243428][ T8472] R13: 0000217411380000 R14: ffff888126976b80 R15: 0000000000000000
[ 3280.244679][ T8472] FS: 00007f18ca3228c0(0000) GS:ffff8881f5e00000(0000) knlGS:0000000000000000
[ 3280.246099][ T8472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3280.247102][ T8472] CR2: 000055b5c456ab00 CR3: 000000012c08e002 CR4: 00000000001706e0
[ 3280.248455][ T8472] Call Trace:
[ 3280.249018][ T8472] build_backref_tree+0xc5/0x700
[ 3280.249845][ T8472] ? _raw_spin_unlock+0x22/0x30
[ 3280.250576][ T8472] ? release_extent_buffer+0x225/0x280
[ 3280.251381][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.252253][ T8472] relocate_tree_blocks+0x2a6/0xb60
[ 3280.253044][ T8472] ? kasan_unpoison_shadow+0x35/0x50
[ 3280.253841][ T8472] ? do_relocation+0xc10/0xc10
[ 3280.254559][ T8472] ? kasan_kmalloc+0x9/0x10
[ 3280.255227][ T8472] ? kmem_cache_alloc_trace+0x6a3/0xcb0
[ 3280.256063][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.256939][ T8472] ? rb_insert_color+0x342/0x360
[ 3280.257685][ T8472] ? add_tree_block.isra.36+0x236/0x2b0
[ 3280.258519][ T8472] relocate_block_group+0x2eb/0x780
[ 3280.259332][ T8472] ? merge_reloc_roots+0x470/0x470
[ 3280.260223][ T8472] btrfs_relocate_block_group+0x26e/0x4c0
[ 3280.261169][ T8472] btrfs_relocate_chunk+0x52/0x120
[ 3280.262199][ T8472] btrfs_balance+0xe2e/0x18f0
[ 3280.263146][ T8472] ? pvclock_clocksource_read+0xeb/0x190
[ 3280.264035][ T8472] ? btrfs_relocate_chunk+0x120/0x120
[ 3280.264851][ T8472] ? lock_contended+0x620/0x6e0
[ 3280.265587][ T8472] ? do_raw_spin_lock+0x1e0/0x1e0
[ 3280.266334][ T8472] ? do_raw_spin_unlock+0xa8/0x140
[ 3280.267103][ T8472] btrfs_ioctl_balance+0x1f9/0x460
[ 3280.267896][ T8472] btrfs_ioctl+0x24c8/0x4380
[ 3280.268599][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.269377][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.270149][ T8472] ? __asan_loadN+0xf/0x20
[ 3280.270875][ T8472] ? btrfs_ioctl_get_supported_features+0x30/0x30
[ 3280.271894][ T8472] ? kvm_sched_clock_read+0x18/0x30
[ 3280.272716][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.273503][ T8472] ? lock_downgrade+0x3f0/0x3f0
[ 3280.274258][ T8472] ? handle_mm_fault+0xad6/0x2150
[ 3280.275053][ T8472] ? do_vfs_ioctl+0xfc/0x9d0
[ 3280.275796][ T8472] ? ioctl_file_clone+0xe0/0xe0
[ 3280.276575][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.277393][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.278222][ T8472] ? check_flags+0x26/0x30
[ 3280.278943][ T8472] ? lock_is_held_type+0xc3/0xf0
[ 3280.279734][ T8472] ? syscall_enter_from_user_mode+0x1b/0x60
[ 3280.280672][ T8472] ? do_syscall_64+0x13/0x80
[ 3280.281394][ T8472] ? rcu_read_lock_sched_held+0xa1/0xd0
[ 3280.282276][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.283084][ T8472] ? __fget_light+0xae/0x110
[ 3280.283826][ T8472] __x64_sys_ioctl+0xc3/0x100
[ 3280.284576][ T8472] do_syscall_64+0x37/0x80
[ 3280.285268][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3280.286198][ T8472] RIP: 0033:0x7f18ca415427
[ 3280.286912][ T8472] Code: 00 00 90 48 8b 05 69 aa 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 aa 0c 00 f7 d8 64 89 01 48
[ 3280.289939][ T8472] RSP: 002b:00007ffcd1fed6b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 3280.291265][ T8472] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18ca415427
[ 3280.292520][ T8472] RDX: 00007ffcd1fed6c8 RSI: 00000000c4009420 RDI: 0000000000000003
[ 3280.293776][ T8472] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[ 3280.295056][ T8472] R10: fffffffffffff59d R11: 0000000000000206 R12: 0000000000000002
[ 3280.296340][ T8472] R13: 00007ffcd1fefa39 R14: 0000560042d94119 R15: 0000000000000000
[ 3280.297670][ T8472] CPU: 3 PID: 8472 Comm: btrfs Tainted: G W 5.10.0-87fa69f8a71b-for-next+ #14
[ 3280.299320][ T8472] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 3280.300804][ T8472] Call Trace:
[ 3280.301338][ T8472] dump_stack+0xbc/0xf9
[ 3280.302022][ T8472] ? btrfs_backref_add_tree_node+0xfa4/0x11d0
[ 3280.302979][ T8472] __warn.cold.11+0xe/0x53
[ 3280.303672][ T8472] ? btrfs_backref_add_tree_node+0xfa4/0x11d0
[ 3280.304627][ T8472] report_bug+0xf4/0x130
[ 3280.305301][ T8472] handle_bug+0x41/0x80
[ 3280.305959][ T8472] exc_invalid_op+0x18/0x40
[ 3280.306666][ T8472] asm_exc_invalid_op+0x12/0x20
[ 3280.307429][ T8472] RIP: 0010:btrfs_backref_add_tree_node+0xfa4/0x11d0
[ 3280.308481][ T8472] Code: 89 e7 4d 8d 66 30 e8 db 3e f3 ff 49 8d 46 2c 48 89 45 c0 e9 da f1 ff ff 49 8d 46 2c bb 8b ff ff ff 48 89 45 c0 e9 c8 f1 ff ff <0f> 0b 49 8d 46 2c bb fe ff ff ff 4d 8d 66 30 48 89 45 c0 e9 b0 f1
[ 3280.311594][ T8472] RSP: 0018:ffffc9000769f4c0 EFLAGS: 00010246
[ 3280.312577][ T8472] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff92000ed3e85
[ 3280.313872][ T8472] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff88805ef475e8
[ 3280.315142][ T8472] RBP: ffffc9000769f598 R08: ffffed100bde8ebe R09: ffffed100bde8ebe
[ 3280.316417][ T8472] R10: ffff88805ef475eb R11: ffffed100bde8ebd R12: ffff88805ef47020
[ 3280.317664][ T8472] R13: 0000217411380000 R14: ffff888126976b80 R15: 0000000000000000
[ 3280.318924][ T8472] build_backref_tree+0xc5/0x700
[ 3280.319696][ T8472] ? _raw_spin_unlock+0x22/0x30
[ 3280.320459][ T8472] ? release_extent_buffer+0x225/0x280
[ 3280.321321][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.322237][ T8472] relocate_tree_blocks+0x2a6/0xb60
[ 3280.323056][ T8472] ? kasan_unpoison_shadow+0x35/0x50
[ 3280.323897][ T8472] ? do_relocation+0xc10/0xc10
[ 3280.324707][ T8472] ? kasan_kmalloc+0x9/0x10
[ 3280.325406][ T8472] ? kmem_cache_alloc_trace+0x6a3/0xcb0
[ 3280.326258][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.327176][ T8472] ? rb_insert_color+0x342/0x360
[ 3280.327970][ T8472] ? add_tree_block.isra.36+0x236/0x2b0
[ 3280.328825][ T8472] relocate_block_group+0x2eb/0x780
[ 3280.329621][ T8472] ? merge_reloc_roots+0x470/0x470
[ 3280.330443][ T8472] btrfs_relocate_block_group+0x26e/0x4c0
[ 3280.331348][ T8472] btrfs_relocate_chunk+0x52/0x120
[ 3280.332179][ T8472] btrfs_balance+0xe2e/0x18f0
[ 3280.332951][ T8472] ? pvclock_clocksource_read+0xeb/0x190
[ 3280.333844][ T8472] ? btrfs_relocate_chunk+0x120/0x120
[ 3280.334711][ T8472] ? lock_contended+0x620/0x6e0
[ 3280.335562][ T8472] ? do_raw_spin_lock+0x1e0/0x1e0
[ 3280.336383][ T8472] ? do_raw_spin_unlock+0xa8/0x140
[ 3280.337215][ T8472] btrfs_ioctl_balance+0x1f9/0x460
[ 3280.338026][ T8472] btrfs_ioctl+0x24c8/0x4380
[ 3280.338743][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.339530][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.340326][ T8472] ? __asan_loadN+0xf/0x20
[ 3280.341065][ T8472] ? btrfs_ioctl_get_supported_features+0x30/0x30
[ 3280.342069][ T8472] ? kvm_sched_clock_read+0x18/0x30
[ 3280.342890][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.343670][ T8472] ? lock_downgrade+0x3f0/0x3f0
[ 3280.344440][ T8472] ? handle_mm_fault+0xad6/0x2150
[ 3280.345257][ T8472] ? do_vfs_ioctl+0xfc/0x9d0
[ 3280.346010][ T8472] ? ioctl_file_clone+0xe0/0xe0
[ 3280.346801][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.347640][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.348542][ T8472] ? check_flags+0x26/0x30
[ 3280.349322][ T8472] ? lock_is_held_type+0xc3/0xf0
[ 3280.350180][ T8472] ? syscall_enter_from_user_mode+0x1b/0x60
[ 3280.351128][ T8472] ? do_syscall_64+0x13/0x80
[ 3280.351872][ T8472] ? rcu_read_lock_sched_held+0xa1/0xd0
[ 3280.352819][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.353604][ T8472] ? __fget_light+0xae/0x110
[ 3280.354321][ T8472] __x64_sys_ioctl+0xc3/0x100
[ 3280.355050][ T8472] do_syscall_64+0x37/0x80
[ 3280.355733][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3280.356645][ T8472] RIP: 0033:0x7f18ca415427
[ 3280.357332][ T8472] Code: 00 00 90 48 8b 05 69 aa 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 aa 0c 00 f7 d8 64 89 01 48
[ 3280.360434][ T8472] RSP: 002b:00007ffcd1fed6b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 3280.361741][ T8472] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18ca415427
[ 3280.362962][ T8472] RDX: 00007ffcd1fed6c8 RSI: 00000000c4009420 RDI: 0000000000000003
[ 3280.364165][ T8472] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[ 3280.365366][ T8472] R10: fffffffffffff59d R11: 0000000000000206 R12: 0000000000000002
[ 3280.366570][ T8472] R13: 00007ffcd1fefa39 R14: 0000560042d94119 R15: 0000000000000000
[ 3280.367904][ T8472] irq event stamp: 4498529
[ 3280.368608][ T8472] hardirqs last enabled at (4498529): [<ffffffff83a60905>] irqentry_exit+0x35/0x80
[ 3280.370128][ T8472] hardirqs last disabled at (4498527): [<ffffffff83e00506>] __do_softirq+0x506/0x5a7
[ 3280.371656][ T8472] softirqs last enabled at (4498528): [<ffffffff83e0044f>] __do_softirq+0x44f/0x5a7
[ 3280.373173][ T8472] softirqs last disabled at (4498521): [<ffffffff83c01122>] asm_call_irq_on_stack+0x12/0x20
[ 3280.374833][ T8472] ---[ end trace 0689b357dfaddeab ]---
(gdb) list *(btrfs_backref_add_tree_node+0xfa4)
0xffffffff81970194 is in btrfs_backref_add_tree_node (fs/btrfs/backref.c:2627).
2622
2623 cur->is_reloc_root = 1;
2624 /* Only reloc backref cache cares about a specific root */
2625 if (cache->is_reloc) {
2626 root = find_reloc_root(cache->fs_info, cur->bytenr);
2627 if (WARN_ON(!root))
2628 return -ENOENT;
2629 cur->root = root;
2630 } else {
2631 /*
[ 3280.375749][ T8472] ------------[ cut here ]------------
[ 3280.376711][ T8472] kernel BUG at fs/btrfs/backref.c:2545!
[ 3280.377576][ T8472] invalid opcode: 0000 [#1] SMP KASAN PTI
[ 3280.378401][ T8472] CPU: 3 PID: 8472 Comm: btrfs Tainted: G W 5.10.0-87fa69f8a71b-for-next+ #14
[ 3280.379966][ T8472] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 3280.381287][ T8472] RIP: 0010:btrfs_backref_cleanup_node+0x5f7/0x600
[ 3280.382376][ T8472] Code: 5f 5d c3 48 89 df e8 08 e2 fa ff 49 8d 7f 70 e8 0f c8 b9 ff 41 80 67 71 fb 4c 89 e7 e8 b2 c9 b9 ff 49 8b 5f 68 e9 b2 fc ff ff <0f> 0b 0f 0b 0f 0b 0f 0b 90 0f 1f 44 00 00 55 48 89 e5 41 57 41 56
[ 3280.385743][ T8472] RSP: 0018:ffffc9000769f4c8 EFLAGS: 00010283
[ 3280.386689][ T8472] RAX: ffff8880436bc880 RBX: ffff8880436bc180 RCX: ffffffff8296ec9b
[ 3280.387966][ T8472] RDX: dffffc0000000000 RSI: dffffc0000000000 RDI: ffff8881ebd43f40
[ 3280.389242][ T8472] RBP: ffffc9000769f520 R08: 0000000000000000 R09: 0000000000000000
[ 3280.390503][ T8472] R10: ffffffff8533ba03 R11: fffffbfff0a67740 R12: ffff8880436bc190
[ 3280.391763][ T8472] R13: ffff8881ebd43900 R14: ffff8880436bc190 R15: ffff8881ebd43f00
[ 3280.393123][ T8472] FS: 00007f18ca3228c0(0000) GS:ffff8881f5e00000(0000) knlGS:0000000000000000
[ 3280.394562][ T8472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3280.395950][ T8472] CR2: 000055b5c456ab00 CR3: 000000012c08e002 CR4: 00000000001706e0
[ 3280.397253][ T8472] Call Trace:
[ 3280.399029][ T8472] btrfs_backref_error_cleanup+0x4df/0x530
[ 3280.399997][ T8472] build_backref_tree+0x1a5/0x700
[ 3280.400814][ T8472] ? _raw_spin_unlock+0x22/0x30
[ 3280.401597][ T8472] ? release_extent_buffer+0x225/0x280
[ 3280.402532][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.403470][ T8472] relocate_tree_blocks+0x2a6/0xb60
[ 3280.404295][ T8472] ? kasan_unpoison_shadow+0x35/0x50
[ 3280.405146][ T8472] ? do_relocation+0xc10/0xc10
[ 3280.405987][ T8472] ? kasan_kmalloc+0x9/0x10
[ 3280.407291][ T8472] ? kmem_cache_alloc_trace+0x6a3/0xcb0
[ 3280.408229][ T8472] ? free_extent_buffer.part.52+0xd7/0x140
[ 3280.409188][ T8472] ? rb_insert_color+0x342/0x360
[ 3280.409969][ T8472] ? add_tree_block.isra.36+0x236/0x2b0
[ 3280.410985][ T8472] relocate_block_group+0x2eb/0x780
[ 3280.411805][ T8472] ? merge_reloc_roots+0x470/0x470
[ 3280.412546][ T8472] btrfs_relocate_block_group+0x26e/0x4c0
[ 3280.413436][ T8472] btrfs_relocate_chunk+0x52/0x120
[ 3280.414302][ T8472] btrfs_balance+0xe2e/0x18f0
[ 3280.415022][ T8472] ? pvclock_clocksource_read+0xeb/0x190
[ 3280.415922][ T8472] ? btrfs_relocate_chunk+0x120/0x120
[ 3280.416842][ T8472] ? lock_contended+0x620/0x6e0
[ 3280.417598][ T8472] ? do_raw_spin_lock+0x1e0/0x1e0
[ 3280.418394][ T8472] ? do_raw_spin_unlock+0xa8/0x140
[ 3280.419208][ T8472] btrfs_ioctl_balance+0x1f9/0x460
[ 3280.420016][ T8472] btrfs_ioctl+0x24c8/0x4380
[ 3280.420734][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.421523][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.423328][ T8472] ? __asan_loadN+0xf/0x20
[ 3280.424033][ T8472] ? btrfs_ioctl_get_supported_features+0x30/0x30
[ 3280.425042][ T8472] ? kvm_sched_clock_read+0x18/0x30
[ 3280.425858][ T8472] ? check_chain_key+0x1f4/0x2f0
[ 3280.426632][ T8472] ? lock_downgrade+0x3f0/0x3f0
[ 3280.427401][ T8472] ? handle_mm_fault+0xad6/0x2150
[ 3280.428192][ T8472] ? do_vfs_ioctl+0xfc/0x9d0
[ 3280.428920][ T8472] ? ioctl_file_clone+0xe0/0xe0
[ 3280.429667][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.430463][ T8472] ? check_flags.part.50+0x6c/0x1e0
[ 3280.431252][ T8472] ? check_flags+0x26/0x30
[ 3280.431928][ T8472] ? lock_is_held_type+0xc3/0xf0
[ 3280.432681][ T8472] ? syscall_enter_from_user_mode+0x1b/0x60
[ 3280.433574][ T8472] ? do_syscall_64+0x13/0x80
[ 3280.434278][ T8472] ? rcu_read_lock_sched_held+0xa1/0xd0
[ 3280.435122][ T8472] ? __kasan_check_read+0x11/0x20
[ 3280.435886][ T8472] ? __fget_light+0xae/0x110
[ 3280.436586][ T8472] __x64_sys_ioctl+0xc3/0x100
[ 3280.437300][ T8472] do_syscall_64+0x37/0x80
[ 3280.438040][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3280.438932][ T8472] RIP: 0033:0x7f18ca415427
[ 3280.439595][ T8472] Code: 00 00 90 48 8b 05 69 aa 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 aa 0c 00 f7 d8 64 89 01 48
[ 3280.442689][ T8472] RSP: 002b:00007ffcd1fed6b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 3280.444023][ T8472] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18ca415427
[ 3280.445292][ T8472] RDX: 00007ffcd1fed6c8 RSI: 00000000c4009420 RDI: 0000000000000003
[ 3280.446601][ T8472] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[ 3280.448014][ T8472] R10: fffffffffffff59d R11: 0000000000000206 R12: 0000000000000002
[ 3280.449397][ T8472] R13: 00007ffcd1fefa39 R14: 0000560042d94119 R15: 0000000000000000
[ 3280.450805][ T8472] Modules linked in:
[ 3280.451530][ T8472] ---[ end trace 0689b357dfaddeac ]---
(gdb) list *(btrfs_backref_cleanup_node+0x5f7)
0xffffffff8196f037 is in btrfs_backref_cleanup_node (fs/btrfs/backref.c:2545).
2540 list_del(&edge->list[LOWER]);
2541 list_del(&edge->list[UPPER]);
2542 btrfs_backref_free_edge(cache, edge);
2543
2544 if (RB_EMPTY_NODE(&upper->rb_node)) {
2545 BUG_ON(!list_empty(&node->upper));
2546 btrfs_backref_drop_node(cache, node);
2547 node = upper;
2548 node->lowest = 1;
2549 continue;
> > Josef
prev parent reply other threads:[~2020-11-15 0:38 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-12 21:18 [PATCH 00/42] Cleanup error handling in relocation Josef Bacik
2020-11-12 21:18 ` [PATCH 01/42] btrfs: allow error injection for btrfs_search_slot and btrfs_cow_block Josef Bacik
2020-11-13 0:02 ` Qu Wenruo
2020-11-13 11:05 ` Josef Bacik
2020-11-12 21:18 ` [PATCH 02/42] btrfs: fix lockdep splat in btrfs_recover_relocation Josef Bacik
2020-11-12 21:18 ` [PATCH 03/42] btrfs: convert some BUG_ON()'s to ASSERT()'s in do_relocation Josef Bacik
2020-11-12 21:18 ` [PATCH 04/42] btrfs: convert BUG_ON()'s in relocate_tree_block Josef Bacik
2020-11-12 21:18 ` [PATCH 05/42] btrfs: return an error from btrfs_record_root_in_trans Josef Bacik
2020-11-12 21:18 ` [PATCH 06/42] btrfs: handle errors from select_reloc_root() Josef Bacik
2020-11-12 21:18 ` [PATCH 07/42] btrfs: convert BUG_ON()'s in select_reloc_root() to proper errors Josef Bacik
2020-11-12 21:18 ` [PATCH 08/42] btrfs: check record_root_in_trans related failures in select_reloc_root Josef Bacik
2020-11-12 21:18 ` [PATCH 09/42] btrfs: do proper error handling in record_reloc_root_in_trans Josef Bacik
2020-11-12 21:18 ` [PATCH 10/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename_exchange Josef Bacik
2020-11-12 21:18 ` [PATCH 11/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename Josef Bacik
2020-11-12 21:18 ` [PATCH 12/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_delete_subvolume Josef Bacik
2020-11-12 21:18 ` [PATCH 13/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_recover_log_trees Josef Bacik
2020-11-12 21:18 ` [PATCH 14/42] btrfs: handle btrfs_record_root_in_trans failure in create_subvol Josef Bacik
2020-11-12 21:18 ` [PATCH 15/42] btrfs: btrfs: handle btrfs_record_root_in_trans failure in relocate_tree_block Josef Bacik
2020-11-12 21:18 ` [PATCH 16/42] btrfs: handle btrfs_record_root_in_trans failure in start_transaction Josef Bacik
2020-11-12 21:18 ` [PATCH 17/42] btrfs: handle record_root_in_trans failure in qgroup_account_snapshot Josef Bacik
2020-11-12 21:18 ` [PATCH 18/42] btrfs: handle record_root_in_trans failure in btrfs_record_root_in_trans Josef Bacik
2020-11-12 21:18 ` [PATCH 19/42] btrfs: handle record_root_in_trans failure in create_pending_snapshot Josef Bacik
2020-11-12 21:18 ` [PATCH 20/42] btrfs: do not panic in __add_reloc_root Josef Bacik
2020-11-12 21:18 ` [PATCH 21/42] btrfs: have proper error handling in btrfs_init_reloc_root Josef Bacik
2020-11-12 21:18 ` [PATCH 22/42] btrfs: do proper error handling in create_reloc_root Josef Bacik
2020-11-12 21:18 ` [PATCH 23/42] btrfs: handle btrfs_update_reloc_root failure in commit_fs_roots Josef Bacik
2020-11-12 21:18 ` [PATCH 24/42] btrfs: change insert_dirty_subvol to return errors Josef Bacik
2020-11-12 21:18 ` [PATCH 25/42] btrfs: handle btrfs_update_reloc_root failure in insert_dirty_subvol Josef Bacik
2020-11-12 21:18 ` [PATCH 26/42] btrfs: handle btrfs_update_reloc_root failure in prepare_to_merge Josef Bacik
2020-11-12 21:18 ` [PATCH 27/42] btrfs: do proper error handling in btrfs_update_reloc_root Josef Bacik
2020-11-12 21:18 ` [PATCH 28/42] btrfs: convert logic BUG_ON()'s in replace_path to ASSERT()'s Josef Bacik
2020-11-12 21:18 ` [PATCH 29/42] btrfs: handle initial btrfs_cow_block error in replace_path Josef Bacik
2020-11-12 21:18 ` [PATCH 30/42] btrfs: handle the loop " Josef Bacik
2020-11-12 21:18 ` [PATCH 31/42] btrfs: handle btrfs_search_slot failure " Josef Bacik
2020-11-12 21:18 ` [PATCH 32/42] btrfs: handle errors in reference count manipulation " Josef Bacik
2020-11-12 21:19 ` [PATCH 33/42] btrfs: handle extent reference errors in do_relocation Josef Bacik
2020-11-12 21:19 ` [PATCH 34/42] btrfs: check for BTRFS_BLOCK_FLAG_FULL_BACKREF being set improperly Josef Bacik
2020-11-12 21:19 ` [PATCH 35/42] btrfs: remove the extent item sanity checks in relocate_block_group Josef Bacik
2020-11-12 21:19 ` [PATCH 36/42] btrfs: do proper error handling in create_reloc_inode Josef Bacik
2020-11-12 21:19 ` [PATCH 37/42] btrfs: handle __add_reloc_root failure in btrfs_recover_relocation Josef Bacik
2020-11-12 21:19 ` [PATCH 38/42] btrfs: handle __add_reloc_root failure in btrfs_reloc_post_snapshot Josef Bacik
2020-11-12 21:19 ` [PATCH 39/42] btrfs: cleanup error handling in prepare_to_merge Josef Bacik
2020-11-12 21:19 ` [PATCH 40/42] btrfs: handle extent corruption with select_one_root properly Josef Bacik
2020-11-12 21:19 ` [PATCH 41/42] btrfs: do proper error handling in merge_reloc_roots Josef Bacik
2020-11-12 21:19 ` [PATCH 42/42] btrfs: check return value of btrfs_commit_transaction in relocation Josef Bacik
2020-11-13 3:53 ` [PATCH 00/42] Cleanup error handling " Zygo Blaxell
2020-11-13 11:03 ` Josef Bacik
2020-11-13 14:39 ` Zygo Blaxell
2020-11-15 0:37 ` Zygo Blaxell [this message]
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