From 6abadf1c97f6ef7df26ee7b16919a148ee948e0a Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Fri, 15 Sep 2023 18:33:59 +0900 Subject: [PATCH] Revert "firewire: core: obsolete usage of GFP_ATOMIC at building node tree" commit 3c70de9b580998e5d644f4e80a9944c30aa1197b upstream. This reverts commit 06f45435d985d60d7d2fe2424fbb9909d177a63d. John Ogness reports the case that the allocation is in atomic context under acquired spin-lock. [ 12.555784] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306 [ 12.555808] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 70, name: kworker/1:2 [ 12.555814] preempt_count: 1, expected: 0 [ 12.555820] INFO: lockdep is turned off. [ 12.555824] irq event stamp: 208 [ 12.555828] hardirqs last enabled at (207): [] ._raw_spin_unlock_irq+0x44/0x80 [ 12.555850] hardirqs last disabled at (208): [] .__schedule+0x854/0xfe0 [ 12.555859] softirqs last enabled at (188): [] .addrconf_verify_rtnl+0x2c4/0xb70 [ 12.555872] softirqs last disabled at (182): [] .addrconf_verify_rtnl+0x70/0xb70 [ 12.555884] CPU: 1 PID: 70 Comm: kworker/1:2 Tainted: G S 6.6.0-rc1 #1 [ 12.555893] Hardware name: PowerMac7,2 PPC970 0x390202 PowerMac [ 12.555898] Workqueue: firewire_ohci .bus_reset_work [firewire_ohci] [ 12.555939] Call Trace: [ 12.555944] [c000000009677830] [c0000000010d83c0] .dump_stack_lvl+0x8c/0xd0 (unreliable) [ 12.555963] [c0000000096778b0] [c000000000140270] .__might_resched+0x320/0x340 [ 12.555978] [c000000009677940] [c000000000497600] .__kmem_cache_alloc_node+0x390/0x460 [ 12.555993] [c000000009677a10] [c0000000003fe620] .__kmalloc+0x70/0x310 [ 12.556007] [c000000009677ac0] [c0003d00004e2268] .fw_core_handle_bus_reset+0x2c8/0xba0 [firewire_core] [ 12.556060] [c000000009677c20] [c0003d0000491190] .bus_reset_work+0x330/0x9b0 [firewire_ohci] [ 12.556079] [c000000009677d10] [c00000000011d0d0] .process_one_work+0x280/0x6f0 [ 12.556094] [c000000009677e10] [c00000000011d8a0] .worker_thread+0x360/0x500 [ 12.556107] [c000000009677ef0] [c00000000012e3b4] .kthread+0x154/0x160 [ 12.556120] [c000000009677f90] [c00000000000bfa8] .start_kernel_thread+0x10/0x14 Cc: stable@kernel.org Reported-by: John Ogness Link: https://lore.kernel.org/lkml/87jzsuv1xk.fsf@jogness.linutronix.de/raw Signed-off-by: Takashi Sakamoto Signed-off-by: Greg Kroah-Hartman --- drivers/firewire/core-device.c | 2 +- drivers/firewire/core-topology.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index a3104e35412c1..aa597cda0d887 100644 --- a/drivers/firewire/core-device.c +++ b/drivers/firewire/core-device.c @@ -1211,7 +1211,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) * without actually having a link. */ create: - device = kzalloc(sizeof(*device), GFP_KERNEL); + device = kzalloc(sizeof(*device), GFP_ATOMIC); if (device == NULL) break; diff --git a/drivers/firewire/core-topology.c b/drivers/firewire/core-topology.c index 88466b663482f..f40c815343812 100644 --- a/drivers/firewire/core-topology.c +++ b/drivers/firewire/core-topology.c @@ -101,7 +101,7 @@ static struct fw_node *fw_node_create(u32 sid, int port_count, int color) { struct fw_node *node; - node = kzalloc(struct_size(node, ports, port_count), GFP_KERNEL); + node = kzalloc(struct_size(node, ports, port_count), GFP_ATOMIC); if (node == NULL) return NULL;