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We are still trying to >> find an easy repro for this. We had to internally revert both of them. >> >> I noticed some similar discussion in another thread [1] but there it >> seems that these changes are actually fixing the issue which is not >> the case for us. >> >> ------------[ cut here ]------------ >> WARNING: drivers/pci/remove.c:130 at pci_stop_and_remove_bus_device+0x39/0x40, CPU#2: modprobe/12956 >> Modules linked in: mlx5_core(-) act_tunnel_key vxlan dummy act_mirred act_gact cls_flower act_police act_ct nf_flow_table [...] >> CPU: 2 UID: 0 PID: 12956 Comm: modprobe Not tainted 6.19.0net_next_e834b5e #1 PREEMPT >> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 >> RIP: 0010:pci_stop_and_remove_bus_device+0x39/0x40 >> Code: [...] >> RSP: 0018:ffff888164c9fd10 EFLAGS: 00010246 >> RAX: 0000000000000000 RBX: ffff888188ff2000 RCX: 0000000000000001 >> RDX: 0000000000000046 RSI: ffffffff8307e068 RDI: ffff88816bf4c9c0 >> RBP: ffff888188ff2000 R08: 00000000000000f4 R09: ffff88816bf4c080 >> R10: 0000000000000001 R11: 0000000000000003 R12: 0000000000000000 >> R13: ffff888164c9fd27 R14: 0000000000000002 R15: 0000000000000000 >> FS: 00007f52364bd740(0000) GS:ffff8885a9019000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00005622dbf749d8 CR3: 0000000169132004 CR4: 0000000000372eb0 >> Call Trace: >> >> pci_iov_remove_virtfn+0xbd/0x120 >> sriov_disable+0x30/0xe0 >> mlx5_sriov_disable+0x50/0xa0 [mlx5_core] >> remove_one+0x68/0xe0 [mlx5_core] >> pci_device_remove+0x39/0xa0 >> device_release_driver_internal+0x1e4/0x240 >> driver_detach+0x47/0x90 >> bus_remove_driver+0x84/0x110 >> pci_unregister_driver+0x3b/0x90 > > This looks pretty much like what Ionut is trying to fix in > v1: https://lore.kernel.org/linux-pci/20260214193235.262219-3-ionut.nechita@windriver.com/T/ > v2: https://lore.kernel.org/linux-pci/20260219212648.82606-1-ionut.nechita@windriver.com/T/ > > Maybe try giving those patches a spin. I think one easy way to hit this sort > of thing is to try unbinding a PF that has 1 or more VFs attached to it from > some device driver. The "trick" is that SR-IOV has to be active. Thanks or the pointer. Will try it. Thanks, Dragos