From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Fei Wu <fei2.wu@intel.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
Atish Patra <atishp@rivosinc.com>,
Palmer Dabbelt <palmer@rivosinc.com>,
Sasha Levin <sashal@kernel.org>,
atishp@atishpatra.org, will@kernel.org, mark.rutland@arm.com,
paul.walmsley@sifive.com, palmer@dabbelt.com,
aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 6.7 23/23] perf: RISCV: Fix panic on pmu overflow handler
Date: Mon, 11 Mar 2024 11:12:03 -0400 [thread overview]
Message-ID: <20240311151217.317068-23-sashal@kernel.org> (raw)
In-Reply-To: <20240311151217.317068-1-sashal@kernel.org>
From: Fei Wu <fei2.wu@intel.com>
[ Upstream commit 34b567868777e9fd39ec5333969728a7f0cf179c ]
(1 << idx) of int is not desired when setting bits in unsigned long
overflowed_ctrs, use BIT() instead. This panic happens when running
'perf record -e branches' on sophgo sg2042.
[ 273.311852] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098
[ 273.320851] Oops [#1]
[ 273.323179] Modules linked in:
[ 273.326303] CPU: 0 PID: 1475 Comm: perf Not tainted 6.6.0-rc3+ #9
[ 273.332521] Hardware name: Sophgo Mango (DT)
[ 273.336878] epc : riscv_pmu_ctr_get_width_mask+0x8/0x62
[ 273.342291] ra : pmu_sbi_ovf_handler+0x2e0/0x34e
[ 273.347091] epc : ffffffff80aecd98 ra : ffffffff80aee056 sp : fffffff6e36928b0
[ 273.354454] gp : ffffffff821f82d0 tp : ffffffd90c353200 t0 : 0000002ade4f9978
[ 273.361815] t1 : 0000000000504d55 t2 : ffffffff8016cd8c s0 : fffffff6e3692a70
[ 273.369180] s1 : 0000000000000020 a0 : 0000000000000000 a1 : 00001a8e81800000
[ 273.376540] a2 : 0000003c00070198 a3 : 0000003c00db75a4 a4 : 0000000000000015
[ 273.383901] a5 : ffffffd7ff8804b0 a6 : 0000000000000015 a7 : 000000000000002a
[ 273.391327] s2 : 000000000000ffff s3 : 0000000000000000 s4 : ffffffd7ff8803b0
[ 273.398773] s5 : 0000000000504d55 s6 : ffffffd905069800 s7 : ffffffff821fe210
[ 273.406139] s8 : 000000007fffffff s9 : ffffffd7ff8803b0 s10: ffffffd903f29098
[ 273.413660] s11: 0000000080000000 t3 : 0000000000000003 t4 : ffffffff8017a0ca
[ 273.421022] t5 : ffffffff8023cfc2 t6 : ffffffd9040780e8
[ 273.426437] status: 0000000200000100 badaddr: 0000000000000098 cause: 000000000000000d
[ 273.434512] [<ffffffff80aecd98>] riscv_pmu_ctr_get_width_mask+0x8/0x62
[ 273.441169] [<ffffffff80076bd8>] handle_percpu_devid_irq+0x98/0x1ee
[ 273.447562] [<ffffffff80071158>] generic_handle_domain_irq+0x28/0x36
[ 273.454151] [<ffffffff8047a99a>] riscv_intc_irq+0x36/0x4e
[ 273.459659] [<ffffffff80c944de>] handle_riscv_irq+0x4a/0x74
[ 273.465442] [<ffffffff80c94c48>] do_irq+0x62/0x92
[ 273.470360] Code: 0420 60a2 6402 5529 0141 8082 0013 0000 0013 0000 (6d5c) b783
[ 273.477921] ---[ end trace 0000000000000000 ]---
[ 273.482630] Kernel panic - not syncing: Fatal exception in interrupt
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Fei Wu <fei2.wu@intel.com>
Link: https://lore.kernel.org/r/20240228115425.2613856-1-fei2.wu@intel.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/perf/riscv_pmu_sbi.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 16acd4dcdb96c..452aab49db1e8 100644
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -512,7 +512,7 @@ static void pmu_sbi_set_scounteren(void *arg)
if (event->hw.idx != -1)
csr_write(CSR_SCOUNTEREN,
- csr_read(CSR_SCOUNTEREN) | (1 << pmu_sbi_csr_index(event)));
+ csr_read(CSR_SCOUNTEREN) | BIT(pmu_sbi_csr_index(event)));
}
static void pmu_sbi_reset_scounteren(void *arg)
@@ -521,7 +521,7 @@ static void pmu_sbi_reset_scounteren(void *arg)
if (event->hw.idx != -1)
csr_write(CSR_SCOUNTEREN,
- csr_read(CSR_SCOUNTEREN) & ~(1 << pmu_sbi_csr_index(event)));
+ csr_read(CSR_SCOUNTEREN) & ~BIT(pmu_sbi_csr_index(event)));
}
static void pmu_sbi_ctr_start(struct perf_event *event, u64 ival)
@@ -731,14 +731,14 @@ static irqreturn_t pmu_sbi_ovf_handler(int irq, void *dev)
/* compute hardware counter index */
hidx = info->csr - CSR_CYCLE;
/* check if the corresponding bit is set in sscountovf */
- if (!(overflow & (1 << hidx)))
+ if (!(overflow & BIT(hidx)))
continue;
/*
* Keep a track of overflowed counters so that they can be started
* with updated initial value.
*/
- overflowed_ctrs |= 1 << lidx;
+ overflowed_ctrs |= BIT(lidx);
hw_evt = &event->hw;
riscv_pmu_event_update(event);
perf_sample_data_init(&data, 0, hw_evt->last_period);
--
2.43.0
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Fei Wu <fei2.wu@intel.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
Atish Patra <atishp@rivosinc.com>,
Palmer Dabbelt <palmer@rivosinc.com>,
Sasha Levin <sashal@kernel.org>,
atishp@atishpatra.org, will@kernel.org, mark.rutland@arm.com,
paul.walmsley@sifive.com, palmer@dabbelt.com,
aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 6.7 23/23] perf: RISCV: Fix panic on pmu overflow handler
Date: Mon, 11 Mar 2024 11:12:03 -0400 [thread overview]
Message-ID: <20240311151217.317068-23-sashal@kernel.org> (raw)
In-Reply-To: <20240311151217.317068-1-sashal@kernel.org>
From: Fei Wu <fei2.wu@intel.com>
[ Upstream commit 34b567868777e9fd39ec5333969728a7f0cf179c ]
(1 << idx) of int is not desired when setting bits in unsigned long
overflowed_ctrs, use BIT() instead. This panic happens when running
'perf record -e branches' on sophgo sg2042.
[ 273.311852] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098
[ 273.320851] Oops [#1]
[ 273.323179] Modules linked in:
[ 273.326303] CPU: 0 PID: 1475 Comm: perf Not tainted 6.6.0-rc3+ #9
[ 273.332521] Hardware name: Sophgo Mango (DT)
[ 273.336878] epc : riscv_pmu_ctr_get_width_mask+0x8/0x62
[ 273.342291] ra : pmu_sbi_ovf_handler+0x2e0/0x34e
[ 273.347091] epc : ffffffff80aecd98 ra : ffffffff80aee056 sp : fffffff6e36928b0
[ 273.354454] gp : ffffffff821f82d0 tp : ffffffd90c353200 t0 : 0000002ade4f9978
[ 273.361815] t1 : 0000000000504d55 t2 : ffffffff8016cd8c s0 : fffffff6e3692a70
[ 273.369180] s1 : 0000000000000020 a0 : 0000000000000000 a1 : 00001a8e81800000
[ 273.376540] a2 : 0000003c00070198 a3 : 0000003c00db75a4 a4 : 0000000000000015
[ 273.383901] a5 : ffffffd7ff8804b0 a6 : 0000000000000015 a7 : 000000000000002a
[ 273.391327] s2 : 000000000000ffff s3 : 0000000000000000 s4 : ffffffd7ff8803b0
[ 273.398773] s5 : 0000000000504d55 s6 : ffffffd905069800 s7 : ffffffff821fe210
[ 273.406139] s8 : 000000007fffffff s9 : ffffffd7ff8803b0 s10: ffffffd903f29098
[ 273.413660] s11: 0000000080000000 t3 : 0000000000000003 t4 : ffffffff8017a0ca
[ 273.421022] t5 : ffffffff8023cfc2 t6 : ffffffd9040780e8
[ 273.426437] status: 0000000200000100 badaddr: 0000000000000098 cause: 000000000000000d
[ 273.434512] [<ffffffff80aecd98>] riscv_pmu_ctr_get_width_mask+0x8/0x62
[ 273.441169] [<ffffffff80076bd8>] handle_percpu_devid_irq+0x98/0x1ee
[ 273.447562] [<ffffffff80071158>] generic_handle_domain_irq+0x28/0x36
[ 273.454151] [<ffffffff8047a99a>] riscv_intc_irq+0x36/0x4e
[ 273.459659] [<ffffffff80c944de>] handle_riscv_irq+0x4a/0x74
[ 273.465442] [<ffffffff80c94c48>] do_irq+0x62/0x92
[ 273.470360] Code: 0420 60a2 6402 5529 0141 8082 0013 0000 0013 0000 (6d5c) b783
[ 273.477921] ---[ end trace 0000000000000000 ]---
[ 273.482630] Kernel panic - not syncing: Fatal exception in interrupt
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Fei Wu <fei2.wu@intel.com>
Link: https://lore.kernel.org/r/20240228115425.2613856-1-fei2.wu@intel.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/perf/riscv_pmu_sbi.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 16acd4dcdb96c..452aab49db1e8 100644
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -512,7 +512,7 @@ static void pmu_sbi_set_scounteren(void *arg)
if (event->hw.idx != -1)
csr_write(CSR_SCOUNTEREN,
- csr_read(CSR_SCOUNTEREN) | (1 << pmu_sbi_csr_index(event)));
+ csr_read(CSR_SCOUNTEREN) | BIT(pmu_sbi_csr_index(event)));
}
static void pmu_sbi_reset_scounteren(void *arg)
@@ -521,7 +521,7 @@ static void pmu_sbi_reset_scounteren(void *arg)
if (event->hw.idx != -1)
csr_write(CSR_SCOUNTEREN,
- csr_read(CSR_SCOUNTEREN) & ~(1 << pmu_sbi_csr_index(event)));
+ csr_read(CSR_SCOUNTEREN) & ~BIT(pmu_sbi_csr_index(event)));
}
static void pmu_sbi_ctr_start(struct perf_event *event, u64 ival)
@@ -731,14 +731,14 @@ static irqreturn_t pmu_sbi_ovf_handler(int irq, void *dev)
/* compute hardware counter index */
hidx = info->csr - CSR_CYCLE;
/* check if the corresponding bit is set in sscountovf */
- if (!(overflow & (1 << hidx)))
+ if (!(overflow & BIT(hidx)))
continue;
/*
* Keep a track of overflowed counters so that they can be started
* with updated initial value.
*/
- overflowed_ctrs |= 1 << lidx;
+ overflowed_ctrs |= BIT(lidx);
hw_evt = &event->hw;
riscv_pmu_event_update(event);
perf_sample_data_init(&data, 0, hw_evt->last_period);
--
2.43.0
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Fei Wu <fei2.wu@intel.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
Atish Patra <atishp@rivosinc.com>,
Palmer Dabbelt <palmer@rivosinc.com>,
Sasha Levin <sashal@kernel.org>,
atishp@atishpatra.org, will@kernel.org, mark.rutland@arm.com,
paul.walmsley@sifive.com, palmer@dabbelt.com,
aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 6.7 23/23] perf: RISCV: Fix panic on pmu overflow handler
Date: Mon, 11 Mar 2024 11:12:03 -0400 [thread overview]
Message-ID: <20240311151217.317068-23-sashal@kernel.org> (raw)
In-Reply-To: <20240311151217.317068-1-sashal@kernel.org>
From: Fei Wu <fei2.wu@intel.com>
[ Upstream commit 34b567868777e9fd39ec5333969728a7f0cf179c ]
(1 << idx) of int is not desired when setting bits in unsigned long
overflowed_ctrs, use BIT() instead. This panic happens when running
'perf record -e branches' on sophgo sg2042.
[ 273.311852] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098
[ 273.320851] Oops [#1]
[ 273.323179] Modules linked in:
[ 273.326303] CPU: 0 PID: 1475 Comm: perf Not tainted 6.6.0-rc3+ #9
[ 273.332521] Hardware name: Sophgo Mango (DT)
[ 273.336878] epc : riscv_pmu_ctr_get_width_mask+0x8/0x62
[ 273.342291] ra : pmu_sbi_ovf_handler+0x2e0/0x34e
[ 273.347091] epc : ffffffff80aecd98 ra : ffffffff80aee056 sp : fffffff6e36928b0
[ 273.354454] gp : ffffffff821f82d0 tp : ffffffd90c353200 t0 : 0000002ade4f9978
[ 273.361815] t1 : 0000000000504d55 t2 : ffffffff8016cd8c s0 : fffffff6e3692a70
[ 273.369180] s1 : 0000000000000020 a0 : 0000000000000000 a1 : 00001a8e81800000
[ 273.376540] a2 : 0000003c00070198 a3 : 0000003c00db75a4 a4 : 0000000000000015
[ 273.383901] a5 : ffffffd7ff8804b0 a6 : 0000000000000015 a7 : 000000000000002a
[ 273.391327] s2 : 000000000000ffff s3 : 0000000000000000 s4 : ffffffd7ff8803b0
[ 273.398773] s5 : 0000000000504d55 s6 : ffffffd905069800 s7 : ffffffff821fe210
[ 273.406139] s8 : 000000007fffffff s9 : ffffffd7ff8803b0 s10: ffffffd903f29098
[ 273.413660] s11: 0000000080000000 t3 : 0000000000000003 t4 : ffffffff8017a0ca
[ 273.421022] t5 : ffffffff8023cfc2 t6 : ffffffd9040780e8
[ 273.426437] status: 0000000200000100 badaddr: 0000000000000098 cause: 000000000000000d
[ 273.434512] [<ffffffff80aecd98>] riscv_pmu_ctr_get_width_mask+0x8/0x62
[ 273.441169] [<ffffffff80076bd8>] handle_percpu_devid_irq+0x98/0x1ee
[ 273.447562] [<ffffffff80071158>] generic_handle_domain_irq+0x28/0x36
[ 273.454151] [<ffffffff8047a99a>] riscv_intc_irq+0x36/0x4e
[ 273.459659] [<ffffffff80c944de>] handle_riscv_irq+0x4a/0x74
[ 273.465442] [<ffffffff80c94c48>] do_irq+0x62/0x92
[ 273.470360] Code: 0420 60a2 6402 5529 0141 8082 0013 0000 0013 0000 (6d5c) b783
[ 273.477921] ---[ end trace 0000000000000000 ]---
[ 273.482630] Kernel panic - not syncing: Fatal exception in interrupt
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Fei Wu <fei2.wu@intel.com>
Link: https://lore.kernel.org/r/20240228115425.2613856-1-fei2.wu@intel.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/perf/riscv_pmu_sbi.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 16acd4dcdb96c..452aab49db1e8 100644
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -512,7 +512,7 @@ static void pmu_sbi_set_scounteren(void *arg)
if (event->hw.idx != -1)
csr_write(CSR_SCOUNTEREN,
- csr_read(CSR_SCOUNTEREN) | (1 << pmu_sbi_csr_index(event)));
+ csr_read(CSR_SCOUNTEREN) | BIT(pmu_sbi_csr_index(event)));
}
static void pmu_sbi_reset_scounteren(void *arg)
@@ -521,7 +521,7 @@ static void pmu_sbi_reset_scounteren(void *arg)
if (event->hw.idx != -1)
csr_write(CSR_SCOUNTEREN,
- csr_read(CSR_SCOUNTEREN) & ~(1 << pmu_sbi_csr_index(event)));
+ csr_read(CSR_SCOUNTEREN) & ~BIT(pmu_sbi_csr_index(event)));
}
static void pmu_sbi_ctr_start(struct perf_event *event, u64 ival)
@@ -731,14 +731,14 @@ static irqreturn_t pmu_sbi_ovf_handler(int irq, void *dev)
/* compute hardware counter index */
hidx = info->csr - CSR_CYCLE;
/* check if the corresponding bit is set in sscountovf */
- if (!(overflow & (1 << hidx)))
+ if (!(overflow & BIT(hidx)))
continue;
/*
* Keep a track of overflowed counters so that they can be started
* with updated initial value.
*/
- overflowed_ctrs |= 1 << lidx;
+ overflowed_ctrs |= BIT(lidx);
hw_evt = &event->hw;
riscv_pmu_event_update(event);
perf_sample_data_init(&data, 0, hw_evt->last_period);
--
2.43.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-03-11 15:13 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-11 15:11 [PATCH AUTOSEL 6.7 01/23] regulator: max5970: Fix regulator child node name Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 02/23] wifi: iwlwifi: mvm: ensure offloading TID queue exists Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 03/23] wifi: iwlwifi: mvm: fix the TXF mapping for BZ devices Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 04/23] btrfs: zoned: don't skip block group profile checks on conventional zones Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 05/23] btrfs: fix data races when accessing the reserved amount of block reserves Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 06/23] btrfs: fix data race at btrfs_use_block_rsv() when accessing block reserve Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 07/23] spi: cadence-qspi: put runtime in runtime PM hooks names Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 08/23] spi: cadence-qspi: add system-wide suspend and resume callbacks Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 09/23] net: smsc95xx: add support for SYS TEC USB-SPEmodule1 Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 10/23] wifi: mac80211: only call drv_sta_rc_update for uploaded stations Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 11/23] drm/ttm/tests: depend on UML || COMPILE_TEST Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 12/23] ASoC: amd: yc: Add Lenovo ThinkBook 21J0 into DMI quirk table Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 13/23] scsi: mpt3sas: Prevent sending diag_reset when the controller is ready Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 14/23] selftests: mptcp: explicitly trigger the listener diag code-path Sasha Levin
2024-03-11 15:28 ` Matthieu Baerts
2024-03-18 12:47 ` Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 15/23] ALSA: hda/realtek - ALC285 reduce pop noise from Headphone port Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 16/23] drm/amdgpu: Enable gpu reset for S3 abort cases on Raven series Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 17/23] drm/buddy: check range allocation matches alignment Sasha Levin
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 18/23] ASoC: amd: yc: add new YC platform variant (0x63) support Sasha Levin
2024-03-11 15:39 ` Mukunda,Vijendar
2024-03-11 15:43 ` Mark Brown
2024-03-11 15:48 ` Mukunda,Vijendar
2024-03-11 15:11 ` [PATCH AUTOSEL 6.7 19/23] ASoC: amd: yc: Fix non-functional mic on Lenovo 21J2 Sasha Levin
2024-03-11 15:12 ` [PATCH AUTOSEL 6.7 20/23] Bluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security Sasha Levin
2024-03-11 15:12 ` [PATCH AUTOSEL 6.7 21/23] Bluetooth: mgmt: Fix limited discoverable off timeout Sasha Levin
2024-03-11 15:12 ` [PATCH AUTOSEL 6.7 22/23] firewire: core: use long bus reset on gap count error Sasha Levin
2024-03-11 15:12 ` Sasha Levin [this message]
2024-03-11 15:12 ` [PATCH AUTOSEL 6.7 23/23] perf: RISCV: Fix panic on pmu overflow handler Sasha Levin
2024-03-11 15:12 ` Sasha Levin
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