All of lore.kernel.org
 help / color / mirror / Atom feed
From: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
To: bvanassche@acm.org, Peter Zijlstra <peterz@infradead.org>,
	Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
	"Deucher, Alexander" <Alexander.Deucher@amd.com>,
	amd-gfx list <amd-gfx@lists.freedesktop.org>
Subject: BUG: key ffff8b521bda9148 has not been registered!
Date: Sat, 9 Jan 2021 17:42:29 +0500	[thread overview]
Message-ID: <CABXGCsPZvfsUBiMr5fdQYRf26bMchN=UL8oXojgoVbWtwJhXjQ@mail.gmail.com> (raw)

Hi folks!
I started to see this message every boot after replacing Radeon VII to 6900XT.

$ journalctl | grep "BUG: key"
Dec 31 05:19:42 localhost.localdomain kernel: BUG: key
ffff98b59ab01148 has not been registered!
Dec 31 05:25:44 localhost.localdomain kernel: BUG: key
ffff8d425ba01148 has not been registered!
Jan 02 17:36:25 localhost.localdomain kernel: BUG: key
ffff935e5a959148 has not been registered!
Jan 03 03:29:08 localhost.localdomain kernel: BUG: key
ffff8d425b0b9148 has not been registered!
Jan 03 03:33:35 localhost.localdomain kernel: BUG: key
ffff8bc35aef9148 has not been registered!
Jan 03 16:47:44 localhost.localdomain kernel: BUG: key
ffff9a3cdb959148 has not been registered!
Jan 06 14:59:58 localhost.localdomain kernel: BUG: key
ffff97b6db9f9148 has not been registered!
Jan 07 14:51:49 localhost.localdomain kernel: BUG: key
ffff8f2dda569148 has not been registered!
Jan 07 15:08:23 localhost.localdomain kernel: BUG: key
ffffa0849bd31148 has not been registered!
Jan 08 18:07:28 localhost.localdomain kernel: BUG: key
ffff89721a0e9148 has not been registered!
Jan 08 18:12:51 localhost.localdomain kernel: BUG: key
ffff8b521bda9148 has not been registered!

Here is trace:
[    6.333672] [drm] REG_WAIT timeout 1us * 100000 tries -
mpc2_assert_idle_mpcc line:480
[    6.335258] BUG: key ffff8b521bda9148 has not been registered!
[    6.335271] ------------[ cut here ]------------
[    6.335273] DEBUG_LOCKS_WARN_ON(1)
[    6.335279] WARNING: CPU: 18 PID: 525 at
kernel/locking/lockdep.c:4618 lockdep_init_map_waits+0x18b/0x210
[    6.335284] Modules linked in: fjes(-) amdgpu(+) iommu_v2 gpu_sched
ttm drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec drm
ghash_clmulni_intel ccp igb nvme nvme_core dca i2c_algo_bit wmi
pinctrl_amd fuse
[    6.335298] CPU: 18 PID: 525 Comm: systemd-udevd Not tainted
5.10.0-0.rc6.20201204git34816d20f173.92.fc34.x86_64 #1
[    6.335302] Hardware name: System manufacturer System Product
Name/ROG STRIX X570-I GAMING, BIOS 2802 10/21/2020
[    6.335306] RIP: 0010:lockdep_init_map_waits+0x18b/0x210
[    6.335309] Code: 00 85 c0 0f 84 75 ff ff ff 8b 3d 18 c4 f1 01 85
ff 0f 85 67 ff ff ff 48 c7 c6 68 43 60 97 48 c7 c7 1d 90 5a 97 e8 70
1f b6 00 <0f> 0b e9 4d ff ff ff e8 19 59 bc 00 85 c0 74 21 44 8b 1d e6
c3 f1
[    6.335315] RSP: 0018:ffff9e5a013d3910 EFLAGS: 00010282
[    6.335317] RAX: 0000000000000016 RBX: ffffffff97247d80 RCX: ffff8b5908fdb238
[    6.335320] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8b5908fdb230
[    6.335322] RBP: ffff8b520e2a7978 R08: 0000000000000000 R09: 0000000000000000
[    6.335325] R10: ffff9e5a013d3740 R11: ffff8b592e2fffe8 R12: ffff8b521bda9148
[    6.335327] R13: 0000000000000000 R14: ffff8b521bc30330 R15: ffff8b521bc30330
[    6.335330] FS:  00007fe019eb9140(0000) GS:ffff8b5908e00000(0000)
knlGS:0000000000000000
[    6.335333] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    6.335336] CR2: 00007fe018f5e000 CR3: 00000001142ee000 CR4: 0000000000350ee0
[    6.335338] Call Trace:
[    6.335342]  __kernfs_create_file+0x7b/0x100
[    6.335344]  sysfs_add_file_mode_ns+0xa3/0x190
[    6.335347]  sysfs_create_bin_file+0x50/0x70
[    6.335428]  hdcp_create_workqueue+0x3bd/0x410 [amdgpu]
[    6.335499]  amdgpu_dm_init.isra.0.cold+0x136/0x126d [amdgpu]
[    6.335570]  ? psp_set_srm+0xb0/0xb0 [amdgpu]
[    6.335637]  ? hdcp_update_display+0x1f0/0x1f0 [amdgpu]
[    6.335641]  ? dev_printk_emit+0x3e/0x40
[    6.335709]  dm_hw_init+0xe/0x20 [amdgpu]
[    6.335776]  amdgpu_device_init.cold+0x18c3/0x1bbc [amdgpu]
[    6.335781]  ? pci_bus_read_config_word+0x39/0x50
[    6.335831]  amdgpu_driver_load_kms+0x2b/0x1f0 [amdgpu]
[    6.335879]  amdgpu_pci_probe+0x129/0x1b0 [amdgpu]
[    6.335889]  local_pci_probe+0x42/0x80
[    6.335891]  pci_device_probe+0xd9/0x1a0
[    6.335896]  really_probe+0x205/0x460
[    6.335898]  driver_probe_device+0xe1/0x150
[    6.335901]  device_driver_attach+0xa8/0xb0
[    6.335904]  __driver_attach+0x8c/0x150
[    6.335907]  ? device_driver_attach+0xb0/0xb0
[    6.335909]  ? device_driver_attach+0xb0/0xb0
[    6.335911]  bus_for_each_dev+0x67/0x90
[    6.335914]  bus_add_driver+0x12e/0x1f0
[    6.335917]  driver_register+0x8b/0xe0
[    6.335919]  ? 0xffffffffc0e4c000
[    6.335922]  do_one_initcall+0x67/0x320
[    6.335925]  ? rcu_read_lock_sched_held+0x3f/0x80
[    6.335928]  ? trace_kmalloc+0xb2/0xe0
[    6.335930]  ? kmem_cache_alloc_trace+0x157/0x270
[    6.335934]  do_init_module+0x5c/0x260
[    6.335936]  __do_sys_init_module+0x13d/0x1a0
[    6.335940]  do_syscall_64+0x33/0x40
[    6.335943]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    6.335945] RIP: 0033:0x7fe01aab2efe
[    6.335948] Code: 48 8b 0d 7d 1f 0c 00 f7 d8 64 89 01 48 83 c8 ff
c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00
00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4a 1f 0c 00 f7 d8 64 89
01 48
[    6.335953] RSP: 002b:00007ffdf4879928 EFLAGS: 00000246 ORIG_RAX:
00000000000000af
[    6.335957] RAX: ffffffffffffffda RBX: 00005636774ad820 RCX: 00007fe01aab2efe
[    6.335959] RDX: 00005636774856e0 RSI: 0000000000b4f95e RDI: 00007fe01840f010
[    6.335962] RBP: 00007fe01840f010 R08: 000056367748bd30 R09: 0000000000b4f970
[    6.335964] R10: 00005633142fc82b R11: 0000000000000246 R12: 00005636774856e0
[    6.335967] R13: 00005636774d22d0 R14: 0000000000000000 R15: 00005636774a1d80
[    6.335971] irq event stamp: 343839
[    6.335973] hardirqs last  enabled at (343839):
[<ffffffff96162861>] console_unlock+0x511/0x640
[    6.335977] hardirqs last disabled at (343838):
[<ffffffff961627c8>] console_unlock+0x478/0x640
[    6.335981] softirqs last  enabled at (343730):
[<ffffffff96e01112>] asm_call_irq_on_stack+0x12/0x20
[    6.335984] softirqs last disabled at (343657):
[<ffffffff96e01112>] asm_call_irq_on_stack+0x12/0x20
[    6.335987] ---[ end trace a4445e953bea9224 ]---

$ /usr/src/kernels/`uname -r`/scripts/faddr2line
/lib/debug/lib/modules/`uname -r`/vmlinux lockdep_init_map_waits+0x18b
lockdep_init_map_waits+0x18b/0x210:
lockdep_init_map_waits at kernel/locking/lockdep.c:4618 (discriminator 7)

$ git blame -L 4613,4623 kernel/locking/lockdep.c
Blaming lines:   0% (11/6357), done.
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4613)          * statically or must have been
registered as a dynamic key.
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4614)          */
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4615)         if (!static_obj(key) &&
!is_dynamic_key(key)) {
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4616)                 if (debug_locks)
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4617)                         printk(KERN_ERR "BUG: key
%px has not been registered!\n", key);
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4618)                 DEBUG_LOCKS_WARN_ON(1);
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4619)                 return;
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4620)         }
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4621)         lock->key = key;
c8a2500586564 kernel/lockdep.c         (Peter Zijlstra  2009-04-17
09:40:49 +0200 4622)
c8a2500586564 kernel/lockdep.c         (Peter Zijlstra  2009-04-17
09:40:49 +0200 4623)         if (unlikely(!debug_locks))

Looks this issue also triggering the next issue, see backtrace:
WARNING: CPU: 29 PID: 1186 at net/netfilter/nf_tables_api.c:622
nft_chain_parse_hook+0x26d/0x310 [nf_tables]

Who can help fix this?

Full kernel logs is here: https://pastebin.com/d2Nq01SX

--
Best Regards,
Mike Gavrilov.

WARNING: multiple messages have this Message-ID (diff)
From: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
To: bvanassche@acm.org, Peter Zijlstra <peterz@infradead.org>,
	 Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
	 "Deucher, Alexander" <Alexander.Deucher@amd.com>,
	amd-gfx list <amd-gfx@lists.freedesktop.org>
Subject: BUG: key ffff8b521bda9148 has not been registered!
Date: Sat, 9 Jan 2021 17:42:29 +0500	[thread overview]
Message-ID: <CABXGCsPZvfsUBiMr5fdQYRf26bMchN=UL8oXojgoVbWtwJhXjQ@mail.gmail.com> (raw)

Hi folks!
I started to see this message every boot after replacing Radeon VII to 6900XT.

$ journalctl | grep "BUG: key"
Dec 31 05:19:42 localhost.localdomain kernel: BUG: key
ffff98b59ab01148 has not been registered!
Dec 31 05:25:44 localhost.localdomain kernel: BUG: key
ffff8d425ba01148 has not been registered!
Jan 02 17:36:25 localhost.localdomain kernel: BUG: key
ffff935e5a959148 has not been registered!
Jan 03 03:29:08 localhost.localdomain kernel: BUG: key
ffff8d425b0b9148 has not been registered!
Jan 03 03:33:35 localhost.localdomain kernel: BUG: key
ffff8bc35aef9148 has not been registered!
Jan 03 16:47:44 localhost.localdomain kernel: BUG: key
ffff9a3cdb959148 has not been registered!
Jan 06 14:59:58 localhost.localdomain kernel: BUG: key
ffff97b6db9f9148 has not been registered!
Jan 07 14:51:49 localhost.localdomain kernel: BUG: key
ffff8f2dda569148 has not been registered!
Jan 07 15:08:23 localhost.localdomain kernel: BUG: key
ffffa0849bd31148 has not been registered!
Jan 08 18:07:28 localhost.localdomain kernel: BUG: key
ffff89721a0e9148 has not been registered!
Jan 08 18:12:51 localhost.localdomain kernel: BUG: key
ffff8b521bda9148 has not been registered!

Here is trace:
[    6.333672] [drm] REG_WAIT timeout 1us * 100000 tries -
mpc2_assert_idle_mpcc line:480
[    6.335258] BUG: key ffff8b521bda9148 has not been registered!
[    6.335271] ------------[ cut here ]------------
[    6.335273] DEBUG_LOCKS_WARN_ON(1)
[    6.335279] WARNING: CPU: 18 PID: 525 at
kernel/locking/lockdep.c:4618 lockdep_init_map_waits+0x18b/0x210
[    6.335284] Modules linked in: fjes(-) amdgpu(+) iommu_v2 gpu_sched
ttm drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec drm
ghash_clmulni_intel ccp igb nvme nvme_core dca i2c_algo_bit wmi
pinctrl_amd fuse
[    6.335298] CPU: 18 PID: 525 Comm: systemd-udevd Not tainted
5.10.0-0.rc6.20201204git34816d20f173.92.fc34.x86_64 #1
[    6.335302] Hardware name: System manufacturer System Product
Name/ROG STRIX X570-I GAMING, BIOS 2802 10/21/2020
[    6.335306] RIP: 0010:lockdep_init_map_waits+0x18b/0x210
[    6.335309] Code: 00 85 c0 0f 84 75 ff ff ff 8b 3d 18 c4 f1 01 85
ff 0f 85 67 ff ff ff 48 c7 c6 68 43 60 97 48 c7 c7 1d 90 5a 97 e8 70
1f b6 00 <0f> 0b e9 4d ff ff ff e8 19 59 bc 00 85 c0 74 21 44 8b 1d e6
c3 f1
[    6.335315] RSP: 0018:ffff9e5a013d3910 EFLAGS: 00010282
[    6.335317] RAX: 0000000000000016 RBX: ffffffff97247d80 RCX: ffff8b5908fdb238
[    6.335320] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8b5908fdb230
[    6.335322] RBP: ffff8b520e2a7978 R08: 0000000000000000 R09: 0000000000000000
[    6.335325] R10: ffff9e5a013d3740 R11: ffff8b592e2fffe8 R12: ffff8b521bda9148
[    6.335327] R13: 0000000000000000 R14: ffff8b521bc30330 R15: ffff8b521bc30330
[    6.335330] FS:  00007fe019eb9140(0000) GS:ffff8b5908e00000(0000)
knlGS:0000000000000000
[    6.335333] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    6.335336] CR2: 00007fe018f5e000 CR3: 00000001142ee000 CR4: 0000000000350ee0
[    6.335338] Call Trace:
[    6.335342]  __kernfs_create_file+0x7b/0x100
[    6.335344]  sysfs_add_file_mode_ns+0xa3/0x190
[    6.335347]  sysfs_create_bin_file+0x50/0x70
[    6.335428]  hdcp_create_workqueue+0x3bd/0x410 [amdgpu]
[    6.335499]  amdgpu_dm_init.isra.0.cold+0x136/0x126d [amdgpu]
[    6.335570]  ? psp_set_srm+0xb0/0xb0 [amdgpu]
[    6.335637]  ? hdcp_update_display+0x1f0/0x1f0 [amdgpu]
[    6.335641]  ? dev_printk_emit+0x3e/0x40
[    6.335709]  dm_hw_init+0xe/0x20 [amdgpu]
[    6.335776]  amdgpu_device_init.cold+0x18c3/0x1bbc [amdgpu]
[    6.335781]  ? pci_bus_read_config_word+0x39/0x50
[    6.335831]  amdgpu_driver_load_kms+0x2b/0x1f0 [amdgpu]
[    6.335879]  amdgpu_pci_probe+0x129/0x1b0 [amdgpu]
[    6.335889]  local_pci_probe+0x42/0x80
[    6.335891]  pci_device_probe+0xd9/0x1a0
[    6.335896]  really_probe+0x205/0x460
[    6.335898]  driver_probe_device+0xe1/0x150
[    6.335901]  device_driver_attach+0xa8/0xb0
[    6.335904]  __driver_attach+0x8c/0x150
[    6.335907]  ? device_driver_attach+0xb0/0xb0
[    6.335909]  ? device_driver_attach+0xb0/0xb0
[    6.335911]  bus_for_each_dev+0x67/0x90
[    6.335914]  bus_add_driver+0x12e/0x1f0
[    6.335917]  driver_register+0x8b/0xe0
[    6.335919]  ? 0xffffffffc0e4c000
[    6.335922]  do_one_initcall+0x67/0x320
[    6.335925]  ? rcu_read_lock_sched_held+0x3f/0x80
[    6.335928]  ? trace_kmalloc+0xb2/0xe0
[    6.335930]  ? kmem_cache_alloc_trace+0x157/0x270
[    6.335934]  do_init_module+0x5c/0x260
[    6.335936]  __do_sys_init_module+0x13d/0x1a0
[    6.335940]  do_syscall_64+0x33/0x40
[    6.335943]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    6.335945] RIP: 0033:0x7fe01aab2efe
[    6.335948] Code: 48 8b 0d 7d 1f 0c 00 f7 d8 64 89 01 48 83 c8 ff
c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00
00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4a 1f 0c 00 f7 d8 64 89
01 48
[    6.335953] RSP: 002b:00007ffdf4879928 EFLAGS: 00000246 ORIG_RAX:
00000000000000af
[    6.335957] RAX: ffffffffffffffda RBX: 00005636774ad820 RCX: 00007fe01aab2efe
[    6.335959] RDX: 00005636774856e0 RSI: 0000000000b4f95e RDI: 00007fe01840f010
[    6.335962] RBP: 00007fe01840f010 R08: 000056367748bd30 R09: 0000000000b4f970
[    6.335964] R10: 00005633142fc82b R11: 0000000000000246 R12: 00005636774856e0
[    6.335967] R13: 00005636774d22d0 R14: 0000000000000000 R15: 00005636774a1d80
[    6.335971] irq event stamp: 343839
[    6.335973] hardirqs last  enabled at (343839):
[<ffffffff96162861>] console_unlock+0x511/0x640
[    6.335977] hardirqs last disabled at (343838):
[<ffffffff961627c8>] console_unlock+0x478/0x640
[    6.335981] softirqs last  enabled at (343730):
[<ffffffff96e01112>] asm_call_irq_on_stack+0x12/0x20
[    6.335984] softirqs last disabled at (343657):
[<ffffffff96e01112>] asm_call_irq_on_stack+0x12/0x20
[    6.335987] ---[ end trace a4445e953bea9224 ]---

$ /usr/src/kernels/`uname -r`/scripts/faddr2line
/lib/debug/lib/modules/`uname -r`/vmlinux lockdep_init_map_waits+0x18b
lockdep_init_map_waits+0x18b/0x210:
lockdep_init_map_waits at kernel/locking/lockdep.c:4618 (discriminator 7)

$ git blame -L 4613,4623 kernel/locking/lockdep.c
Blaming lines:   0% (11/6357), done.
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4613)          * statically or must have been
registered as a dynamic key.
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4614)          */
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4615)         if (!static_obj(key) &&
!is_dynamic_key(key)) {
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4616)                 if (debug_locks)
108c14858b9ea kernel/locking/lockdep.c (Bart Van Assche 2019-02-14
15:00:53 -0800 4617)                         printk(KERN_ERR "BUG: key
%px has not been registered!\n", key);
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4618)                 DEBUG_LOCKS_WARN_ON(1);
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4619)                 return;
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4620)         }
fbb9ce9530fd9 kernel/lockdep.c         (Ingo Molnar     2006-07-03
00:24:50 -0700 4621)         lock->key = key;
c8a2500586564 kernel/lockdep.c         (Peter Zijlstra  2009-04-17
09:40:49 +0200 4622)
c8a2500586564 kernel/lockdep.c         (Peter Zijlstra  2009-04-17
09:40:49 +0200 4623)         if (unlikely(!debug_locks))

Looks this issue also triggering the next issue, see backtrace:
WARNING: CPU: 29 PID: 1186 at net/netfilter/nf_tables_api.c:622
nft_chain_parse_hook+0x26d/0x310 [nf_tables]

Who can help fix this?

Full kernel logs is here: https://pastebin.com/d2Nq01SX

--
Best Regards,
Mike Gavrilov.
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

             reply	other threads:[~2021-01-09 12:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-09 12:42 Mikhail Gavrilov [this message]
2021-01-09 12:42 ` BUG: key ffff8b521bda9148 has not been registered! Mikhail Gavrilov
2021-05-04 11:58 ` Lockdep bug during hdcp_create_workqueue() (Was: BUG: key ffff8b521bda9148 has not been registered!) David Ward
2021-05-10  9:30   ` [PATCH] drm/amd/display: Initialize attribute for hdcp_srm sysfs file David Ward
2021-05-10 21:24     ` Alex Deucher

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CABXGCsPZvfsUBiMr5fdQYRf26bMchN=UL8oXojgoVbWtwJhXjQ@mail.gmail.com' \
    --to=mikhail.v.gavrilov@gmail.com \
    --cc=Alexander.Deucher@amd.com \
    --cc=amd-gfx@lists.freedesktop.org \
    --cc=bvanassche@acm.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=peterz@infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.