https://bugzilla.kernel.org/show_bug.cgi?id=219034 Bug ID: 219034 Summary: [linux-next][tag next-20240709] kernel BUG at lib/dynamic_queue_limits.c:99! and Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI Product: Virtualization Version: unspecified Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: hongyu.ning@xxxxxxxxx Regression: No Hi, based on regular regression check on linux-next tree as KVM/QEMU based guest VM kernel, there are following error observed since next-20240709. it's 100% reproduced on my local setup. based on bisect, it points to linux-next merge commit: first bad commit: [28ab424895157dfea418c12418c5d0fc9263e850] Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git while no further check for vhost.git repo possible on my side, can somebody help to take a look? [ 1.770041] ------------[ cut here ]------------ [ 1.770088] kernel BUG at lib/dynamic_queue_limits.c:99! [ 1.770132] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 1.770135] CPU: 0 UID: 0 PID: 218 Comm: NetworkManager Not tainted 6.10.0-rc7-next-20240709-next-20240709 #97 [ 1.770137] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS unknown 2/2/2022 [ 1.770138] RIP: 0010:dql_completed+0x155/0x170 [ 1.770153] Code: 51 cb 03 02 48 89 57 58 e9 35 ff ff ff 85 ed 41 0f 95 c0 39 d9 0f 95 c1 41 84 c8 74 05 45 85 e4 78 0a 44 89 d9 e9 18 ff ff ff <0f> 0b 01 d2 44 89 d9 29 d1 ba 00 00 00 00 0f 48 ca eb 88 0f 1f 84 [ 1.770154] RSP: 0018:ffa0000000003d98 EFLAGS: 00010283 [ 1.770156] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1.770157] RDX: 0000000000000000 RSI: 000000000739aa20 RDI: ff1100000702c6c0 [ 1.770158] RBP: ffa0000000003de8 R08: 0000000000000000 R09: 0000000000000000 [ 1.770159] R10: 0000000000000000 R11: ffa0000000003ff8 R12: ff1100000770a800 [ 1.770160] R13: ff1100000702c600 R14: 0000000000000001 R15: ff1100000770a800 [ 1.770161] FS: 00007f6420576500(0000) GS:ff1100003d400000(0000) knlGS:0000000000000000 [ 1.770164] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.770164] CR2: 0000564d582a9048 CR3: 000000000e2ce003 CR4: 0000000000771ef0 [ 1.770165] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1.770166] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 1.770166] PKRU: 55555554 [ 1.770167] Call Trace: [ 1.770169] <IRQ> [ 1.770171] ? die+0x33/0x90 [ 1.770174] ? do_trap+0xda/0x100 [ 1.770180] ? do_error_trap+0x65/0x80 [ 1.770181] ? dql_completed+0x155/0x170 [ 1.770183] ? exc_invalid_op+0x4e/0x70 [ 1.770186] ? dql_completed+0x155/0x170 [ 1.770188] ? asm_exc_invalid_op+0x16/0x20 [ 1.770194] ? dql_completed+0x155/0x170 [ 1.770195] __free_old_xmit+0xe4/0x160 [ 1.770199] free_old_xmit+0x28/0x80 [ 1.770200] virtnet_poll+0xdb/0x350 [ 1.770204] ? update_load_avg+0x7e/0x7a0 [ 1.770209] __napi_poll+0x29/0x1b0 [ 1.770214] net_rx_action+0x2fe/0x3d0 [ 1.770216] ? wakeup_preempt+0x5a/0x70 [ 1.770219] ? ttwu_do_activate+0x6f/0x210 [ 1.770221] ? _raw_spin_unlock_irqrestore+0x1e/0x40 [ 1.770224] ? kvm_sched_clock_read+0xd/0x20 [ 1.770227] ? sched_clock+0xc/0x30 [ 1.770232] ? kvm_sched_clock_read+0xd/0x20 [ 1.770233] ? sched_clock+0xc/0x30 [ 1.770235] ? sched_clock_cpu+0xb/0x190 [ 1.770239] handle_softirqs+0xfa/0x2f0 [ 1.770242] do_softirq+0x71/0x90 [ 1.770243] </IRQ> [ 1.770243] <TASK> [ 1.770244] __local_bh_enable_ip+0x65/0x80 [ 1.770245] virtnet_open+0xa6/0x2d0 [ 1.770248] __dev_open+0xea/0x1b0 [ 1.770250] __dev_change_flags+0x1e0/0x250 [ 1.770253] dev_change_flags+0x21/0x60 [ 1.770255] do_setlink+0x283/0xbc0 [ 1.770260] ? __nla_validate_parse+0x47/0x1d0 [ 1.770262] __rtnl_newlink+0x502/0x640 [ 1.770264] ? __kmalloc_cache_noprof+0x27e/0x2f0 [ 1.770268] rtnl_newlink+0x44/0x70 [ 1.770269] rtnetlink_rcv_msg+0x159/0x420 [ 1.770271] ? netlink_unicast+0x31c/0x360 [ 1.770275] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 1.770277] netlink_rcv_skb+0x54/0x100 [ 1.770280] netlink_unicast+0x23e/0x360 [ 1.770282] netlink_sendmsg+0x1e4/0x420 [ 1.770284] ____sys_sendmsg+0x310/0x340 [ 1.770289] ? copy_msghdr_from_user+0x6d/0xa0 [ 1.770291] ___sys_sendmsg+0x88/0xd0 [ 1.770293] ? kfree+0x13b/0x2a0 [ 1.770298] ? preempt_count_add+0x69/0xa0 [ 1.770299] ? _raw_spin_unlock+0x14/0x30 [ 1.770300] ? proc_sys_call_handler+0xe7/0x280 [ 1.770304] ? mod_objcg_state+0xbe/0x2e0 [ 1.770307] ? __fdget+0xc7/0x100 [ 1.770311] __sys_sendmsg+0x59/0xa0 [ 1.770313] ? syscall_trace_enter+0xfb/0x190 [ 1.770317] do_syscall_64+0x47/0x110 [ 1.770321] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 1.770323] RIP: 0033:0x7f642154fa9d [ 1.770324] Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 aa c1 f4 ff 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 44 89 c7 48 89 44 24 08 e8 fe c1 f4 ff 48 [ 1.770325] RSP: 002b:00007ffe1fcbd3c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e [ 1.770326] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f642154fa9d [ 1.770327] RDX: 0000000000000000 RSI: 00007ffe1fcbd400 RDI: 000000000000000d [ 1.770328] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 1.770328] R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000000a [ 1.770328] R13: 00007ffe1fcbd56c R14: 0000564d58220040 R15: 00007ffe1fcbd570 [ 1.770330] </TASK> [ 1.770330] Modules linked in: [ 1.770331] ---[ end trace 0000000000000000 ]--- [ 1.778118] RIP: 0010:dql_completed+0x155/0x170 [ 1.778158] Code: 51 cb 03 02 48 89 57 58 e9 35 ff ff ff 85 ed 41 0f 95 c0 39 d9 0f 95 c1 41 84 c8 74 05 45 85 e4 78 0a 44 89 d9 e9 18 ff ff ff <0f> 0b 01 d2 44 89 d9 29 d1 ba 00 00 00 00 0f 48 ca eb 88 0f 1f 84 [ 1.778271] RSP: 0018:ffa0000000003d98 EFLAGS: 00010283 [ 1.778308] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1.778363] RDX: 0000000000000000 RSI: 000000000739aa20 RDI: ff1100000702c6c0 [ 1.778422] RBP: ffa0000000003de8 R08: 0000000000000000 R09: 0000000000000000 [ 1.778474] R10: 0000000000000000 R11: ffa0000000003ff8 R12: ff1100000770a800 [ 1.778528] R13: ff1100000702c600 R14: 0000000000000001 R15: ff1100000770a800 [ 1.778581] FS: 00007f6420576500(0000) GS:ff1100003d400000(0000) knlGS:0000000000000000 [ 1.778636] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.778680] CR2: 0000564d582a9048 CR3: 000000000e2ce003 CR4: 0000000000771ef0 [ 1.778736] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1.778788] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 1.778843] PKRU: 55555554 [ 1.778863] Kernel panic - not syncing: Fatal exception in interrupt [ 1.778929] Kernel Offset: disabled [ 1.783606] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- -- You may reply to this email to add a comment. 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