Hi, the following crash occurs with 6.13.1 on our servers every 20 minutes or so: netfs: Can't donate prior to front R=00070d30[3] s=9a000-9bfff 0/2000/2000 folio: 98000-9bfff donated: prev=0 next=0 s=9a000 av=2000 part=2000 ------------[ cut here ]------------ kernel BUG at fs/netfs/read_collect.c:315! Oops: invalid opcode: 0000 [#1] SMP PTI CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Not tainted 6.13.1-cm4all2-hp #416 Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 11/23/2021 RIP: 0010:netfs_consume_read_data.isra.0+0xa72/0xab0 Code: 48 89 ea 31 f6 48 c7 c7 bb 7a d0 ae e8 b7 d2 d1 ff 48 8b 4c 24 20 4c 89 e2 48 c7 c7 d7 7a d0 ae 48 8b 74 24 18 e8 9e d2 d1 ff <0f> 0b 4c 89 ef 48 89 54 24 10 4c 89 44 24 08 e8 1a 4e b5 00 48 c7 RSP: 0018:ffffb434cc448db0 EFLAGS: 00010246 RAX: 0000000000000019 RBX: ffff8fa63d9cbec0 RCX: 0000000000000027 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8fbb1f9db840 RBP: 0000000000000000 R08: 00000000ffffbfff R09: 0000000000000001 R10: 0000000000000003 R11: ffff8fd31f6a0000 R12: 0000000000002000 R13: ffff8fa5350aaee8 R14: 0000000000004000 R15: ffff8fa5350aaee8 FS: 0000000000000000(0000) GS:ffff8fbb1f9c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9c5000ef48 CR3: 0000000bcee2e001 CR4: 00000000001706f0 Call Trace: <IRQ> ? die+0x32/0x80 ? do_trap+0xd8/0x100 ? do_error_trap+0x65/0x80 ? netfs_consume_read_data.isra.0+0xa72/0xab0 ? exc_invalid_op+0x4c/0x60 ? netfs_consume_read_data.isra.0+0xa72/0xab0 ? asm_exc_invalid_op+0x16/0x20 ? netfs_consume_read_data.isra.0+0xa72/0xab0 ? __pfx_cachefiles_read_complete+0x10/0x10 netfs_read_subreq_terminated+0x22d/0x370 cachefiles_read_complete+0x48/0xf0 iomap_dio_bio_end_io+0x125/0x160 blk_update_request+0xea/0x3e0 scsi_end_request+0x27/0x190 scsi_io_completion+0x43/0x6c0 blk_complete_reqs+0x40/0x50 handle_softirqs+0xd1/0x280 irq_exit_rcu+0x91/0xb0 common_interrupt+0x79/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40 RIP: 0010:cpuidle_enter_state+0xba/0x3b0 Code: 00 e8 ea 86 1c ff e8 45 f7 ff ff 8b 53 04 49 89 c5 0f 1f 44 00 00 31 ff e8 73 b9 1b ff 45 84 ff 0f 85 f8 01 00 00 fb 45 85 f6 <0f> 88 46 01 00 00 48 8b 04 24 49 63 ce 48 6b d1 68 49 29 c5 48 89 RSP: 0018:ffffb434c018be98 EFLAGS: 00000202 RAX: ffff8fbb1f9c0000 RBX: ffffd41cbe7e3448 RCX: 000000000000001f RDX: 0000000000000007 RSI: 000000003149acb2 RDI: 0000000000000000 RBP: 0000000000000004 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000004 R11: 000000000000001f R12: ffffffffaf660060 R13: 0000030f6179fa73 R14: 0000000000000004 R15: 0000000000000000 ? cpuidle_enter_state+0xad/0x3b0 cpuidle_enter+0x29/0x40 do_idle+0x19c/0x200 cpu_startup_entry+0x25/0x30 start_secondary+0xf3/0x100 common_startup_64+0x13e/0x148 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- This is a server with heavy NFS traffic (with fscache enabled). Please help - and let me know if you need more information. Max
